IE20210163A2

IE20210163A2 - Cavity tray

Info

Publication number: IE20210163A2
Application number: IE20210163A
Authority: IE
Inventors: Duffin John; Coyle Sean
Original assignee: Keyfix Ltd
Priority date: 2020-09-14
Filing date: 2021-09-14
Publication date: 2022-06-08
Also published as: GB2603570A; GB2598844B; IE20210164A2; GB202014450D0; GB2598844A; IE20210162A2; GB202113132D0; GB202113136D0; GB2598843A; GB202016546D0; GB202017178D0; GB202113135D0; GB202015222D0

Abstract

A non-combustible cavity tray comprising a channel which extends downwardly from the main planar surface of the cavity tray. The channel which extends downwardly from the main planar surface of the cavity tray reduces the gap between the main planar surface of adjacent overlapping cavity trays.

Description

CAVITY TRAY The present invention relates to cavity trays. In particular, the present invention relates to cavity trays for use in cavity walls.

The construction of buildings having cavity walls with an inner leaf, outer leaf and a cavity therebetween is common. Insulation is also applied in the cavity to prevent thermal bridging between the two leaves of the cavity wall.

A major problem associated with buildings having cavity walls is dampness. Dampness usually occurs due to penetration of moisture through the masonry of the outer leaf which can then travel across the cavity and permeate the inner leaf of the cavity wall. Dampness may also permeate the inner leaf of the cavity wall by passing through gaps or openings in the cavity for example at a window/door opening or where a floor slab has been inserted. Dampness may also occur at these areas due to condensation arising from thermal bridging at these areas as a result of the gaps or openings. In order to prevent moisture permeating the inner leaf of the cavity wall, damp proof courses such as cavity trays may be installed between the leaves. Such damp proof courses are typically formed of polypropylene due to its water-resistant properties. However, polypropylene is a combustible material and, in case of a fire, combustible materials such as polypropylene enable the spread of smoke and flames through the cavity to subsequent levels/floors of the building. In addition, where a damp proof course such as a cavity tray has not adequately adhered to the masonry adhesive such as mortar or alternative bonding material during installation, a gap may form between the damp proof course and the masonry adhesive which can form a pathway for moisture in the cavity. A gap may also form between adjacent overlapping cavity trays where the main planar surface of the underlying tray has protrusions extending therefrom. In this case, the overlapping tray sits on the apex of the protrusions and therefore a gap is present between the main planar surfaces of the overlapping adjacent cavity trays. There is often little or no mortar in these gaps and so moisture may ingress into the gap.

Another problem associated with buildings having cavity walls is differential movement between the two leaves of a cavity wall, in particular where there is an uneven distribution of weight between the two leaves. This uneven distribution of weight typically occurs where the building has multiple floors or where there is a window or door opening. In order to increase structural integrity of such buildings and prevent against differential movement, it is necessary to bridge the cavity between the two leaves with structural supports such as brackets and/or lintels at wall/floor slab junctions between two levels or above window/door openings. Consequently, damp-proof courses and support brackets/lintels are required within close proximity to each other. Therefore, to prevent against thermal bridging in these areas, insulation must be cut and manoeuvred into the space between the damp proof course and the support bracket/lintel. This can be difficult and time consuming and often results in improper installation of insulation, resulting in thermal bridging between the leaves of the cavity wall.

It is an object of the present invention to aid in preventing moisture permeating the inner leaf of a cavity wall.

It is a further object of the present invention to prevent the spread of smoke, flames and fumes in a cavity of a cavity wall.

It is a further object of the invention to enhance adhesion between cavity trays and masonry adhesive installed in a cavity wall.

It is a further object of the present invention to reduce or mitigate the gap between adjacent, overlapping cavity trays.

According to a first aspect of the invention there is provided a cavity tray comprising a channel which extends downwardly from the main planar surface of the cavity tray.

Preferably, the cavity tray is quadrilateral in shape from a front view, having two longitudinal ends and two lateral ends.

By main planar surface, we mean the surface of the cavity tray that extends between the lateral ends and/or longitudinal ends of the cavity tray and/or the surface of the cavity tray that has the largest width and/or surface area. By downwardly, we mean downwardly when the cavity tray is in an in-use position.

Preferably, the cavity tray is for use in a cavity wall of a building.

Preferably, the channel extends downwardly from the main planar surface of the cavity tray at one or both lateral ends of the cavity tray.

Preferably, the channel which extends downwardly from the main planar surface of the cavity tray forms a downward step from the main planar surface of the cavity tray at one or both lateral ends of the cavity tray.

Preferably, the channel which extends downwardly from the main planar surface of the cavity tray is formed on a portion of the cavity tray which, in use, is overlapped by an adjacent cavity tray.

Preferably, the channel which extends downwardly from the main planar surface of the cavity tray is formed on a portion of the cavity tray which, in use, underlies a portion of an adjacent cavity tray.

Advantageously, this reduces the distance between the main planar surfaces of overlapping cavity trays.

Preferably, the channel which extends downwardly from the main planar surface of the cavity tray is formed on a portion of the cavity tray which, in use, overlaps a portion of an adjacent cavity tray.

Preferably, the channel which extends downwardly from the main planar surface of the cavity tray extends downwardly by up to 10mm or by approximately 10mm.

Preferably, the channel which extends downwardly from the main planar surface of the cavity tray extends downwardly by approximately 4mm.

Preferably, the cavity tray comprises one or more ribs to prevent the lateral movement of moisture across the cavity tray and/or over the end of the cavity tray.

Preferably, the cavity tray comprises a plurality of equispaced ribs to prevent the lateral movement of moisture across the cavity tray and/or over the end of the cavity tray.

Preferably, the one or more ribs are located at one or both lateral ends of the cavity tray.

Preferably, the channel which extends downwardly from the main planar surface of the cavity tray comprises one or more ribs to prevent the lateral movement of moisture across the cavity tray and/or over the end of the cavity tray.

Preferably, the channel which extends downwardly from the main planar surface of the cavity tray comprises a plurality of equispaced ribs to prevent the lateral movement of moisture across the cavity tray and/or over the end of the cavity tray.

Ideally, the one or more ribs are located on the channel which extends downwardly from the main planar surface of the cavity tray.

Preferably, the one or more ribs are located at one or both lateral ends of the cavity tray perpendicular to the longitudinal axis of the cavity tray.

Preferably, the one or more ribs extend upwardly from the cavity tray.

Ideally, the one or more ribs extend upwardly from the channel which extends downwardly from the main planar surface of the cavity tray.

Preferably, the one or more ribs extend downwardly from the cavity tray/channel which extends downwardly from the main planar surface of the cavity tray.

Preferably, in one embodiment, the cavity tray comprises a channel which extends downwardly from the main planar surface locatable on one lateral end and one or more ribs locatable the other lateral end.

Preferably, in one embodiment, the cavity tray comprises a channel which extends downwardly from the main planar surface locatable on one lateral end and one or more upwardly extending ribs locatable the other lateral end.

Preferably, in one embodiment, the cavity tray comprises a channel which extends downwardly from the main planar surface locatable on one lateral end and one or more downwardly extending ribs locatable the other lateral end.

Advantageously, this means that, in use, the one or more downwardly extending ribs extend into the downwardly extending channel of an adjacent underlying cavity tray.

Preferably, the one or more ribs extend from the cavity tray by up to 10mm or by approximately 10mm.

Preferably, the one or more ribs extend from the cavity tray by approximately 4mm.

Preferably, the one or more ribs extend from the channel which extends downwardly from the main planar surface of the cavity tray by upto 10mm or by approximately 10mm.

Preferably, the one or more ribs extend from the channel which extends downwardly from the main planar surface of the cavity tray by approximately 4mm.

Preferably, the one or more ribs extend from the cavity tray by approximately 3mm. Preferably, the one or more ribs extend from the cavity tray by approximately 2mm.

Ideally, the one or more ribs extend upwardly from the cavity tray at a length equal to the downwardly extending length of the channel which extends downwardly from the main planar surface of the cavity tray.

Preferably, the one or more ribs extend upwardly from the channel which extends downwardly from the main planar surface of the cavity tray at a length equal to the downwardly extending length of the channel which extends downwardly from the main planar surface of the cavity tray.

Ideally, the channel which extends downwardly from the main planar surface of the cavity tray extends downwardly at a parameter equal to the length of which the one or more ribs extend upwardly from the cavity tray.

Preferably, the apex of the one or more ribs is at the same planar height as the main planar surface of the cavity tray.

Advantageously, this reduces the gap between adjacent overlapping cavity trays. Thereby, this prevents moisture ingressing into such a gap. This is in comparison to the gap between adjacent overlapping cavity trays wherein the bottom tray does not comprise a channel which extends downwardly from the main planar surface of the cavity tray and thereby the apex of the one or more ribs is up to 10mm/is approximately 4mm above the height of the main planar surface of the bottom cavity tray.

Further advantageously, this enables easier installation of adjacent overlapping cavity trays. Furthermore, this is more aesthetically pleasing.

Preferably, the cavity tray comprises one or more intermediate channels which extend between two ribs and/or between one of the ribs and another upstanding portion of the cavity tray.

Ideally, the channel which extends downwardly from the main planar surface of the cavity tray comprises one or more intermediate channels which extend between two ribs and/or two other upstanding portions of the cavity tray/channel which extends downwardly.

Preferably, the one or more intermediate channels are configurable to direct moisture towards the outer leaf of the cavity wall.

Preferably, the one or more intermediate channels extend between two equally spaced ribs and/or other upstanding portions.

Preferably, the cavity tray comprises a plurality of intermediate channels.

Ideally, the channel which extends downwardly from the main planar surface of the cavity tray comprises a plurality of intermediate channels.

Ideally, the plurality of intermediate channels are of a uniform configuration.

Preferably, the plurality of intermediate channels are of uniform depth, width and/or length.

Ideally, the one or more ribs are located on a portion of the cavity tray that underlies and/or overlaps a portion of an adjacent cavity tray.

Advantageously, locating the one or more ribs on a portion of the cavity tray that underlies an adjacent cavity tray enables the prevention of lateral movement of moisture across the cavity tray joint and/or over the end of the cavity tray without the requirement of aligning the cavity tray with perpend joints of the wall.

Preferably, the one or more ribs extend at least partially along the width of the cavity tray.

Ideally, the one or more ribs extend along the entire width of the cavity tray.

By width, we mean in the direction from the leading edge of the cavity tray adjacent to the front of the outer leaf of the cavity wall to the trailing edge of the cavity tray disposed in the cavity of the cavity wall when the cavity tray is in use.

Ideally, in use, the one or more ribs abut against the overlapping or underlying surface of an adjacent cavity tray.

Advantageously, this this reduces the gap between the overlapping cavity trays.

Preferably, the one or more ribs are configurable to reinforce the cavity tray.

Ideally, the one or more ribs are shaped to provide structural reinforcement of the cavity tray.

Ideally, the one or more ribs are shaped to create one or more bends.

Advantageously, the one or more bends reduce the distance between flat portions of the cavity tray from one lateral end to the other lateral end of the cavity tray and therefore increase the structural reinforcement of the cavity tray.

Ideally, the one or more ribs are U-shaped.

Alternatively, the one or more ribs are V-shaped, trapezoidal or any other shape suitable for providing reinforcement to the cavity tray.

Preferably, the cavity tray comprises means for enhancing adhesion between the cavity tray and masonry adhesive.

Advantageously, the enhanced adhesion prevents a gap forming between the cavity tray and the masonry adhesive. This further prevents moisture travelling between the cavity tray and the masonry adhesive and into or across the cavity of the cavity wall.

By masonry adhesive, we mean any adhesive such as mortar which is capable of binding masonry blocks or bricks together or to other elements.

Ideally, the means for enhancing adhesion between the cavity tray and masonry adhesive is a means for enhancing adhesion between the cavity tray and masonry adhesive appliable to the cavity tray.

Preferably, the means for enhancing adhesion between the cavity tray and masonry adhesive is formed on a surface of the cavity tray.

Preferably, the means for enhancing adhesion between the cavity tray and masonry adhesive is applied on a surface of the cavity tray.

Ideally, the means for enhancing adhesion between the cavity tray and masonry adhesive is formed on one or more surfaces of the cavity tray which contact masonry adhesive, in use.

Preferably, the means for enhancing adhesion between the cavity tray and masonry adhesive is applied on one or more surfaces of the cavity tray.

Preferably, the means for enhancing adhesion between the cavity tray and masonry adhesive is applied on the channel which extends downwardly from the main planar surface of the cavity tray.

Alternatively, the means for enhancing adhesion between the cavity tray and masonry adhesive is formed/applied on all surfaces of the cavity tray.

Preferably, the means for enhancing adhesion between the cavity tray and masonry adhesive comprises a rough surface formed on the cavity tray.

Advantageously, the rough surface will increase engagement of the cavity tray with the masonry adhesive thereby preventing a gap forming between the cavity tray and the masonry adhesive. Further advantageously, the rough surface prevents separation of the masonry adhesive from the cavity tray as the masonry adhesive dries/hardens/cures.

Preferably, the means for enhancing adhesion between the cavity tray and masonry adhesive comprises an uneven surface formed on the cavity tray.

Preferably, the means for enhancing adhesion between the cavity tray and masonry adhesive comprises a patterned surface formed on the cavity tray.

Preferably, the means for enhancing adhesion between the cavity tray and masonry adhesive comprises a raised checkered surface formed on the cavity tray.

Preferably, the means for enhancing adhesion between the cavity tray and masonry adhesive comprises a stippled surface formed on the cavity tray.

Advantageously, the means for enhancing adhesion between the cavity tray and masonry adhesive comprising an uneven, patterned, raised checkered and/or stippled and/or any combination of these surfaces formed on the cavity tray will increase engagement of the cavity tray with the masonry adhesive thereby preventing a gap forming due to separation of the masonry adhesive from the cavity tray as the masonry adhesive dries/hardens/cures.

Preferably, the means for enhancing adhesion between the cavity tray and masonry adhesive is configurable to resist relative movement between the cavity tray and the masonry adhesive when the cavity tray is in use.

Preferably, in use, the means for enhancing adhesion between the cavity tray and masonry adhesive is configurable to engage with masonry adhesive to resist separation of the masonry adhesive relative to the cavity tray.

Preferably, the means for enhancing adhesion between the cavity tray and masonry adhesive comprises indents, perforations, ribs, deformations and/or any other means suitable to ensure a good bond with the masonry adhesive.

Preferably, the integrity of the surfaces of the cavity tray are not compromised.

Preferably, the integrity of the surfaces of the cavity tray which engage with masonry adhesive are not compromised.

Preferably, the cavity tray is free from perforations, holes, slots or any other openings.

Preferably, the surfaces of the cavity tray which engage with masonry adhesive are free from perforations, holes, slots or any other openings.

Preferably, all of the surfaces of the cavity tray are free from perforations, holes, slots or any other openings.

Preferably, the integrity of the surfaces of the cavity tray which are horizontal or substantially horizontal when the cavity tray is in use are not compromised.

Ideally, the surfaces of the cavity tray which are horizontal or substantially horizontal when the cavity tray is in use are free from perforations, holes, slots or any other openings.

Preferably, the means for enhancing adhesion between the cavity tray and masonry adhesive does not compromise the integrity of the surfaces of the cavity tray which engage with masonry adhesive.

Ideally, the means for enhancing adhesion between the cavity tray and masonry adhesive allows the integrity of the surfaces of the cavity tray to be maintained.

Ideally, the means for enhancing adhesion between the cavity tray and masonry adhesive is free from perforations, holes, slots or any other openings.

Advantageously, the means for enhancing adhesion between the cavity tray and masonry adhesive increases engagement of the cavity tray with masonry adhesive without the use of perforations or holes. Further advantageously, being free from perforations and holes will prevent moisture from gathering in holes and/or from travelling between the cavity tray and the masonry adhesive and/or toward the inner leaf of the cavity wall via these openings.

Preferably, the cavity tray is impervious to water.

Advantageously, this prevents moisture from passing through the cavity tray.

Preferably, the cavity tray is non-combustible.

Advantageously, in case of a fire, the cavity tray will not produce fire pollutants.

By fire pollutants, we mean smoke, flames, fumes and any other emissions produced by combustion.

Preferably, the means for enhancing adhesion between the cavity tray and masonry adhesive is non-combustible.

Preferably, the means for enhancing adhesion between the cavity tray and masonry adhesive is impervious to moisture.

Preferably the cavity tray comprises a means for delivering internal moisture towards the outer leaf of a cavity wall.

Advantageously, the cavity tray prevents the ingress of moisture within the cavity.

Preferably, the channel which extends downwardly from the main planar surface of the cavity tray extends downwardly from the main planar surface of the means for delivering internal moisture towards the outer leaf of the cavity tray.

Preferably, the one or more ribs are located on the means for delivering internal moisture towards the outer leaf of the cavity wall.

Ideally, the one or more ribs extend upwardly from the means for delivering internal moisture towards the outer leaf of the cavity wall.

Preferably, the channel which extends downwardly from the main planar surface of the cavity tray extends downwardly from the main planar surface of the means for delivering internal moisture towards the outer leaf of the cavity tray by up to 10mm or by approximately 10mm.

Preferably, the channel which extends downwardly from the main planar surface of the cavity tray extends downwardly from the main planar surface of the means for delivering internal moisture towards the outer leaf of the cavity tray by approximately 4mm.

Ideally, the one or more ribs extend from the means for delivering internal moisture towards the outer leaf of the cavity wall by up to 10mm or by approximately 10mm.

Ideally, the one or more ribs extend from the means for delivering internal moisture towards the outer leaf of the cavity wall by approximately 4mm.

Preferably, the cavity tray is configurable to engage with the outer leaf of a cavity wall.

Preferably, the means for delivering internal moisture towards the outer leaf of a cavity wall is configurable to engage with the outer leaf of the cavity wall.

Preferably, in use, the means for delivering internal moisture towards the outer leaf of a cavity wall is secured between masonry of the outer leaf of the cavity wall.

Preferably, the cavity tray comprises a lower portion.

Preferably, the means for delivering internal moisture towards the outer leaf of a cavity wall comprises a lower portion.

Preferably, the cavity tray comprises an upper portion.

Preferably, the means for delivering internal moisture towards the outer leaf of a cavity wall comprises an upper portion.

Preferably, the cavity tray comprises a middle portion.

Preferably, the means for delivering internal moisture towards the outer leaf of a cavity wall comprises a middle portion.

Preferably, the middle portion extends between the lower portion and the upper portion of the cavity tray/means for delivering internal moisture towards the outer leaf of a cavity wall.

Preferably, the lower portion of the cavity tray/means for delivering internal moisture towards the outer leaf of a cavity wall is configurable to engage with the outer leaf of a cavity wall.

Preferably, the lower portion of the cavity tray/means for delivering internal moisture towards the outer leaf of a cavity wall is mountable on the outer leaf.

Preferably, the lower portion of the cavity tray/means for delivering internal moisture towards the outer leaf of a cavity wall is secured between masonry of the outer leaf of the cavity wall.

Preferably, the lower portion of the cavity tray/means for delivering moisture towards the outer leaf of the cavity wall comprises a horizontal portion.

The terms ‘upper’, ‘lower’, ‘horizontal’ and other like terms are used to refer to the orientation of portions of the cavity tray when the cavity tray is installed in a cavity wall.

Preferably, the means for enhancing adhesion between the cavity tray and masonry adhesive is formed on the lower portion of the cavity tray/means for delivering internal moisture towards the outer leaf of a cavity wall.

Preferably, the means for enhancing adhesion between the cavity tray and masonry adhesive is formed only on the lower portion of the cavity tray/means for delivering internal moisture towards the outer leaf of a cavity wall.

Advantageously, forming the means for enhancing adhesion between the cavity tray and masonry adhesive only on the lower portion of the cavity tray/means for delivering internal moisture towards the outer leaf of a cavity wall reduces processing time of the cavity tray during manufacture.

Ideally, the means for enhancing adhesion between the cavity tray and masonry adhesive is formed on a lower surface of the lower portion of the cavity tray/means for delivering internal moisture towards the outer leaf of a cavity wall.

Ideally, the means for enhancing adhesion between the cavity tray and masonry adhesive is formed on an upper surface of the lower portion of the cavity tray/means for delivering internal moisture towards the outer leaf of a cavity wall.

Ideally, the means for enhancing adhesion between the cavity tray and masonry adhesive is formed on all surfaces of the lower portion of the cavity tray/means for delivering internal moisture towards the outer leaf of a cavity wall.

Preferably, the cavity tray is configurable to extend into the cavity.

Ideally, the means for delivering internal moisture towards the outer leaf of a cavity wall is configurable to extend into the cavity.

Preferably, the cavity tray is configurable to extend into the cavity from the outer leaf of the cavity wall.

Ideally, the means for delivering internal moisture towards the outer leaf of a cavity wall is configurable to extend into the cavity from the outer leaf of the cavity wall.

Preferably, at least part of the means for delivering internal moisture towards the outer leaf of a cavity wall is locatable at, about or above a gap or opening in the inner leaf of a cavity wall.

Preferably, at least the uppermost portion of the means for delivering internal moisture towards the outer leaf of a cavity wall is locatable at, about or above a gap or opening in the inner leaf of a cavity wall.

Preferably, the means for delivering internal moisture towards the outer leaf of a cavity wall is locatable at, about or above a junction between a floor slab and the inner leaf of a cavity wall.

Preferably, at least a part of the means for delivering internal moisture towards the outer leaf of a cavity wall is locatable at, about or above a junction between a floor slab and the inner leaf of a cavity wall.

Preferably, at least the uppermost portion of the means for delivering internal moisture towards the outer leaf of a cavity wall is locatable at, about or above a junction between a floor slab and the inner leaf of a cavity wall.

Preferably, the means for delivering internal moisture towards the outer leaf of a cavity wall is locatable at, about or above a structural support in the cavity of a cavity wall.

Preferably, at least part of and/or at least part of the uppermost portion of the means for delivering internal moisture towards the outer leaf of a cavity wall is locatable at, about or above a structural support in the cavity of a cavity wall.

Preferably, the means for delivering internal moisture towards the outer leaf of a cavity wall is impervious to water.

Advantageously, the means for delivering internal moisture towards the outer leaf of a cavity wall prevents the penetration of moisture.

Preferably, the means for delivering internal moisture towards the outer leaf of a cavity wall is non-combustible.

Advantageously, in case of a fire, the means for delivering internal moisture towards the outer leaf of a cavity wall will not produce fire pollutants.

Preferably, the lower portion of the cavity tray/means for delivering internal moisture towards the outer leaf of a cavity wall is configurable to engage with a structural support.

Preferably, the cavity tray comprises a sloping portion.

Ideally, the sloping portion extends between the upper portion and the lower portion of the cavity tray.

Preferably, the middle portion of the means for delivering internal moisture towards the outer leaf of a cavity wall comprises a sloping portion.

Preferably, the sloping portion extends across the cavity of the cavity wall.

Ideally, in use, the sloping portion extends from the lower portion into the cavity of a cavity wall.

Preferably, the sloping portion extends across the cavity from the outer leaf towards the inner leaf.

Preferably, the sloping portion extends diagonally across the cavity from the outer leaf towards the inner leaf.

Preferably, in use, the sloping portion extends upwardly from the outer leaf towards the inner leaf of the cavity wall.

Preferably, in use, the sloping portion extends upwardly from the outer leaf towards the inner leaf of the cavity wall so that the upper portion of the cavity tray/means for delivering internal moisture towards the outer leaf of a cavity wall is at a higher level than the lower portion of the cavity tray/means for delivering internal moisture towards the outer leaf of a cavity wall.

Advantageously, the sloping portion creates a downward flow path for moisture in the direction from the inner cavity wall to the outer cavity wall. Further advantageously, this prevents moisture stagnating in the cavity or on the lower portion of the cavity tray/means for delivering internal moisture towards the outer leaf of a cavity wall.

Preferably, the sloping portion extends across part of or the full depth of the cavity.

Preferably, the sloping portion comprises an upper surface.

Preferably, the sloping portion comprises a lower surface.

Preferably, in use, the upper surface of the sloping portion is configurable to catch moisture falling from above and direct it toward the outer leaf of the cavity wall.

Preferably, the sloping portion is connected to the lower portion of the cavity tray/means for delivering internal moisture towards the outer leaf of a cavity wall.

Alternatively, the cavity tray comprises an intermediate portion for connecting the sloping portion and the lower portion of the cavity tray/means for delivering internal moisture towards the outer leaf of a cavity wall.

Ideally, the middle portion of the cavity tray/means for delivering internal moisture towards the outer leaf of a cavity wall comprises an intermediate portion for connecting the sloping portion and the lower portion of the cavity tray/means for delivering internal moisture towards the outer leaf of a cavity wall.

Preferably, the intermediate portion extends from the lower portion of the cavity tray/means for delivering internal moisture towards the outer leaf of a cavity wall.

Preferably, the intermediate portion extends upwardly from the lower portion of the cavity tray/means for delivering internal moisture towards the outer leaf of a cavity wall.

Preferably, the intermediate portion extends vertically or substantially vertically upwardly from the lower portion of the cavity tray/means for delivering internal moisture towards the outer leaf of a cavity wall.

Preferably, the sloping portion extends from the intermediate portion.

Preferably, in use, the upper surface of the sloping portion is configurable to intercept moisture flowing towards an opening or gap in the inner leaf, the gap being below the cavity tray/means for delivering internal moisture towards the outer leaf of a cavity wall and directs the moisture towards the outer leaf.

Preferably, the upper portion of the cavity tray/means for delivering internal moisture towards the outer leaf of a cavity wall extends from the sloping portion.

Preferably, the upper portion extends from an upper edge of the sloping portion.

Preferably, the upper portion extends upwardly from the sloping portion.

Preferably, the upper portion extends vertically or substantially vertically upwardly from the sloping portion.

Preferably, the cavity tray comprises a means fordraining moisture out of the cavity.

Preferably, the means for delivering internal moisture towards the outer leaf of a cavity wall comprises a means for draining moisture out of the cavity.

Preferably, the means for draining moisture out of the cavity is locatable on the lower portion of the cavity tray/means for delivering internal moisture towards the outer leaf of a cavity wall.

Alternatively, the means for draining moisture out of the cavity is locatable on any other portion of the cavity tray/means for delivering internal moisture towards the outer leaf of a cavity wall extending between bricks in a course of the outer leaf.

Preferably, the intermediate portion comprises a front surface.

Preferably, the intermediate portion comprises a back surface.

Preferably, the front surface of the intermediate portion faces the inner surface of the outer cavity wall.

Preferably, there is a gap between the front surface of the intermediate portion and the inner surface of the outer leaf to enable moisture to flow down the front surface of the intermediate portion to the means for draining moisture from the cavity.

Alternatively, the front face of the intermediate portion may press against the inner surface of the outer leaf of the cavity wall.

Preferably, the lower portion of the cavity tray/means for delivering internal moisture towards the outer leaf of a cavity wall is adjustable to correspond with the width of the outer leaf of the cavity wall.

By width, we mean from the front surface of the outer leaf which faces the exterior of the building/wall to the rear surface of the outer leaf which faces into the cavity.

Preferably, the width of the lower portion of the cavity tray/means for delivering internal moisture towards the outer leaf of a cavity wall is adjustable.

By width, we mean the size of the lower portion from the leading edge of the lower potion to the trailing edge of the lower portion which engages with the intermediate portion or the sloping portion.

Preferably, the lower portion of the cavity tray/means for delivering internal moisture towards the outer leaf of a cavity wall is configurable to be trimmed.

Advantageously, in use, any portion of the lower portion extending beyond the outer surface of the outer cavity wall can be trimmed as required.

Preferably, in use, the means for draining moisture out of the cavity is locatable between masonry of the outer leaf of the cavity wall.

Advantageously, this enables moisture to bypass the masonry. This is in comparison to the moisture being absorbed by the masonry. Further advantageously, this prevents an accumulation of moisture at the inner surface of an outer leaf.

Preferably, the means fordraining moisture from the cavity comprises a weep vent.

Preferably, the cavity tray comprises a stop end to prevent internal moisture cascading over the end of the cavity tray/means for delivering internal moisture towards the outer leaf of a cavity wall into the cavity.

Preferably, the means for delivering internal moisture towards the outer leaf of a cavity wall comprises a stop end to prevent internal moisture cascading over the end of the cavity tray/means for delivering internal moisture towards the outer leaf of a cavity wall into the cavity.

Preferably, the stop end is locatable on a lateral end of the cavity tray/means for delivering internal moisture towards the outer leaf of a cavity wall.

Preferably, the stop end extends between the upper portion of the cavity tray/means for delivering internal moisture towards the outer leaf of a cavity wall and the lower portion of the cavity tray/means for delivering internal moisture towards the outer leaf of a cavity wall.

Preferably, the stop end comprises a folded portion of a lateral edge of the cavity tray/means for delivering internal moisture towards the outer leaf of a cavity wall.

Preferably, the stop end is formed of a folded portion of a lateral edge of the cavity tray/means for delivering internal moisture towards the outer leaf of a cavity wall.

Preferably, the stop end of adjacent cavity trays abut against each other.

Alternatively, the adjacent cavity trays are overlapped.

Preferably, the cavity tray is configurable to be mechanically fixed to an adjacent overlapping and/or underlying cavity tray.

Preferably, the cavity tray is configurable to be mechanically fixed to an adjacent overlapping and/or underlying cavity tray by one or more pins and/or by any other mechanical fixing means.

Preferably, the cavity tray comprises mechanical fixing means configurable to mechanically fix the cavity tray to an adjacent overlapping and/or underlying cavity tray.

Preferably, the cavity tray is configurable to extend into the cavity, supported only by the outer leaf of the cavity wall.

Advantageously, this mitigates the requirement of mechanically fixing the cavity tray to the inner leaf of the cavity wall thereby reducing the amount of time and material used during installation of the cavity tray.

Preferably, the cavity tray is configurable to be fixed to and/or mounted on and/or supported by the outer leaf of the cavity wall only.

Ideally, the cavity tray is configurable to remain upright within the cavity while being fixed to and/or mounted on and/or supported by the outer leaf of a cavity wall only.

Preferably, the cavity tray is configurable to remain upright within the cavity without being supported by or fixed to the inner leaf of a cavity wall.

Preferably, the cavity tray is configurable not to be fixed to the inner leaf of the cavity wall.

Ideally, the cavity tray is configurable to not be supported by the inner leaf of the cavity wall.

Preferably, the cavity tray is configurable to not contact the inner leaf of the cavity wall.

Ideally, the cavity tray is only fixed to the outer leaf of the cavity wall and/or is fixed between masonry of the outer leaf of the cavity wall.

Preferably, the cavity tray is configurable to not engage with the inner leaf of the cavity wall.

Preferably, the cavity tray is self-supporting within the cavity.

Ideally, the cavity tray is a one-piece cavity tray.

Advantageously, it is possible to design the tray so that it extends only a predetermined distance from the outer leaf so that it works over the entire range of cavity widths.

Alternatively or additionally, the cavity tray is configurable to engage with the inner leaf of a cavity wall.

Advantageously, the cavity tray is not required to be fixed to the inner leaf of the cavity wall but may be fixed to the inner leaf, if desired.

Ideally, the cavity tray is supportable by the outer leaf and the inner leaf of a cavity wall.

Preferably, the cavity tray is configurable to extend into the cavity, supported by the outer leaf and the inner leaf of the cavity wall.

Preferably, the cavity tray is configurable to extend into the cavity, supported at a lower portion by the outer leaf and at an upper portion by the inner leaf.

Ideally, the cavity tray is supportable by the outer leaf of a cavity wall and by another building component disposed within the cavity of the cavity wall.

Preferably, the cavity tray is configurable to extend into the cavity, supported by the outer leaf the cavity wall and by another building component disposed within the cavity of the cavity wall.

Preferably, the cavity tray is configurable to extend into the cavity, supported at a lower portion by the outer leaf and at an upper portion by another building component disposed within the cavity of the cavity wall.

Preferably, the cavity tray is configurable to extend into the cavity, supported at a lower portion by the outer leaf and at an upper portion by another building component disposed within the cavity of the cavity wall such as insulation or any other building component disposed within the cavity.

Preferably, the cavity tray is adjustable to fit all/multiple cavities of different sizes.

Preferably, the cavity tray is arrangeable to fit all/multiple cavities of different sizes.

Ideally, the width of the cavity tray is adjustable to correspond to the size/width of the cavity.

Advantageously, adjustability of the cavity tray reduces the need to manufacture multiple cavity trays of different widths and/or sizes.

Alternatively, the cavity tray is pre-configured to correspond to the shape and size of the cavity.

Preferably, the cavity tray is modular.

Preferably, the means for delivering internal moisture towards the outer leaf of a cavity wall is adjustable to correspond with the width of the cavity in which it is disposed.

Preferably, the means for delivering internal moisture towards the outer leaf of a cavity wall is arrangeable to correspond with the size/width of the cavity in which it is disposed.

Ideally, the means for delivering internal moisture towards the outer leaf of a cavity wall is extendable.

Preferably, the means for delivering internal moisture towards the outer leaf of a cavity wall is modular.

Preferably, the cavity tray comprises an upper module and a lower module.

Preferably, the means for delivering internal moisture towards the outer leaf of a cavity wall comprises an upper module and a lower module.

Preferably, in use, the upper module of the cavity tray/means for delivering internal moisture towards the outer leaf of a cavity wall is configurable to overlap the lower module of the cavity tray/means for delivering internal moisture towards the outer leaf of a cavity wall.

Preferably, in use, the upper module of the cavity tray/means for delivering internal moisture towards the outer leaf of a cavity wall is configurable to overlap the lower module of the cavity tray/means for delivering internal moisture towards the outer leaf of a cavity wall by at least 25mm.

Preferably, in use, the upper module is secured to the inner leaf of the cavity wall via a fastening means such as self-tapping screws or any other suitable means.

Advantageously, this retains the position of the upper module in the cavity.

Preferably, the lower module is secured between masonry of the outer leaf of the cavity wall.

Preferably, the lower portion is locatable on the lower module of the means for delivering internal moisture towards the outer leaf of a cavity wall.

Preferably, the upper portion is locatable on the upper module of the means for delivering internal moisture towards the outer leaf of a cavity wall.

Preferably, the middle portion/sloping portion is divided between the upper module and the lower module.

Preferably, in use, the middle portion/sloping portion on the upper module is arrangeable to overlap the middle portion/sloping portion on the lower module.

Preferably, the lower portion of the cavity tray/means for delivering internal moisture towards the outer leaf of a cavity wall is a substantially rectangular shape having two longitudinal edges and two lateral edges.

Preferably, the intermediate portion is locatable on a lower module of the cavity tray/means for delivering internal moisture towards the outer leaf of a cavity wall.

Preferably, the cavity tray comprises a means for preventing slippage of the cavity tray relative to the surface upon which it is mounted.

Preferably, the cavity tray comprises a means for preventing slippage of the cavity tray relative to masonry upon which it is mounted.

Preferably, the means for delivering internal moisture towards the outer leaf of a cavity wall comprises a means for preventing slippage.

Preferably, in use, the means for preventing slippage is configurable to engage with mortar to resist movement of the cavity tray relative to the surface upon which it is mounted.

Preferably, in use, the means for preventing slippage is configurable to engage with mortar to resist movement of the cavity tray relative to masonry upon which it is mounted.

Preferably, the means for preventing slippage comprises indents, perforations, ribs, deformations and/or any other means suitable to ensure a good mortar bond.

Preferably, the means for preventing slippage is locatable on the lower portion of the cavity tray/means for delivering internal moisture towards the outer leaf of a cavity wall.

Preferably, the means for preventing slippage is locatable on a bottom surface of the lower portion.

Preferably, the cavity tray comprises a means for preventing fire pollutants passing between floors/levels of a building via the cavity.

Advantageously, the cavity tray prevents the spread of fire pollutants from one floor to another and therefore improves the safety of multi-storey buildings.

Preferably, the means for preventing fire pollutants passing between floors/levels of a building via the cavity is non-combustible.

Advantageously, in case of a fire, the means for preventing fire pollutants passing between floors/levels of a building via the cavity will not produce fire pollutants further adding to the existing fire pollutant problem.

Preferably, the means for preventing fire pollutants passing between floors/levels of a building via the cavity is fire resistant.

Preferably, the means for preventing fire pollutants passing between floors/levels of a building via the cavity is impervious to fire pollutants.

Advantageously, this prevents fire pollutants from passing between floors or levels of the building via the cavity.

Preferably, the means for preventing fire pollutants passing between floors/levels of a building via the cavity is arrangeable to extend into and/or across the cavity.

Advantageously, this prevents fire pollutants from passing between floors/levels of a building via the cavity.

Preferably, the means for preventing fire pollutants passing between floors/levels of a building via the cavity is arrangeable to extend between the outer leaf and inner leaf of a cavity wall.

Preferably, the means for preventing fire pollutants passing between floors/levels of a building via the cavity is configurable to engage with the outer leaf of a cavity wall.

Preferably, the means for preventing fire pollutants passing between floors/levels of a building via the cavity is configurable to engage with the inner leaf of a cavity wall.

Preferably, the means for preventing fire pollutants passing between floors/levels of a building via the cavity is arrangeable to seal the cavity.

When we say seal the cavity, we mean across the cavity between the inner leaf and the outer leaf and also along the cavity as far as the outer leaf and inner leaf extend around the building. This provides the cavity with sealed cavity compartments to prevent the spread of fire pollutants between the floors/levels of the building.

Preferably, in use, the means for preventing fire pollutants passing between floors/levels of a building via the cavity of adjacent cavity trays abut against each other.

Preferably, the cavity tray comprises a fire barrier.

Advantageously, this enable the cavity tray to contain a fire within a compartment of a cavity.

Preferably, the cavity tray comprises at least one fire sock.

Ideally, the means for preventing fire pollutants passing between floors/levels of a building via the cavity comprises a fire barrier.

Preferably, the means for preventing fire pollutants passing between floors/levels of a building via the cavity comprises at least one fire sock.

Preferably, at least part of the means for preventing fire pollutants passing between floors/levels of a building via the cavity is compressible.

Advantageously, this enhances the ease of installation of the means for preventing fire pollutants passing between floors/levels of a building via the cavity into small spaces.

Preferably, at least part of the means for preventing fire pollutants passing between floors/levels of a building via the cavity is configurable to press against the inner leaf of a cavity wall.

Advantageously, this prevents the formation of gaps or openings between the means for preventing fire pollutants passing between floors/levels of a building via the cavity and the inner leaf of the cavity wall.

Preferably, at least part of the means for preventing fire pollutants passing between floors/levels of a building via the cavity is configurable to press against the outer leaf of a cavity wall.

Advantageously, this prevents the formation of gaps or openings between the means for preventing fire pollutants passing between floors/levels of a building via the cavity and the outer leaf of the cavity wall.

Preferably, at least part of the means for preventing fire pollutants passing between floors/levels of a building via the cavity is configurable to press against a surface of a floor slab facing into the cavity.

Advantageously, this prevents the formation of gaps or openings between the means for preventing fire pollutants passing between floors/levels of a building via the cavity and the surface of a floor slab facing into the cavity of the cavity wall.

Preferably, at least part of the means for preventing fire pollutants passing between floors/levels of a building via the cavity is configurable to press against the inner leaf of a cavity wall at a junction between the inner leaf and a floor slab.

Preferably, the means for preventing fire pollutants passing between floors/levels of a building via the cavity is configurable to seal any gaps or openings at the junction between the inner leaf of the cavity wall and the floor slab.

Advantageously, this prevents the re-routing of fire pollutants to other compartments of the cavity or building.

Preferably, the means for preventing fire pollutants passing between floors/levels of a building via the cavity is locatable at, about or extends across a gap or opening in the cavity wall.

Preferably, the means for preventing fire pollutants passing between floors/levels of a building via the cavity is locatable at, about or extends across a junction between a floor slab and the inner leaf of a cavity wall.

Preferably, the means for preventing fire pollutants passing between floors/levels of a building via the cavity is impervious to water.

Advantageously, this prevents moisture from passing through the means for preventing fire pollutants passing between floors/levels of a building via the cavity.

Preferably, the cavity tray is a thermal barrier.

Advantageously, the cavity tray prevents the passage of heat through the cavity tray.

Ideally, the cavity tray is formed from a material that prevents the passage of heat through the cavity tray.

Preferably, the cavity tray is an insulator.

Ideally, the cavity tray is formed from a material that provides insulation.

Preferably, at least part the cavity tray is formable from any material having low thermal conductivity.

Preferably, at least part or all of the cavity tray is formable from mineral fiber.

Preferably, at least part or all of the cavity tray is formable from mineral wool.

Preferably, at least part or all of the cavity tray is formable from mica and/or mica sheets.

Preferably, at least part or all of the cavity tray is formable from stainless steel.

Preferably, at least part or all of the cavity tray is formable from a non-combustible fabric.

Preferably, at least part or all of the cavity tray is formable from timber.

Preferably, at least part or all of the cavity tray is formable from mineral board.

Preferably, at least part or all of the cavity tray is formable from a combination of material.

Alternatively, at least part or all of the cavity tray may be formable from any other material that is non-combustible and/or has a low thermal conductivity.

Preferably, the cavity tray is arrangeable to extend across the cavity.

Advantageously, this prevents moisture and fire pollutants by-passing the cavity tray.

Preferably, the cavity tray is arrangeable to extend between the outer leaf and inner leaf of a cavity wall.

Preferably, the cavity tray is arrangeable to seal the cavity between floors or levels of a building.

Preferably, the means for delivering internal moisture towards the outer leaf of a cavity wall is arrangeable to extend across the cavity.

Preferably, the means for delivering internal moisture towards the outer leaf of a cavity wall is arrangeable to extend between the outer leaf and inner leaf of a cavity wall.

Preferably, the means for delivering internal moisture towards the outer leaf of a cavity wall is arrangeable to seal the cavity.

Preferably, the cavity tray comprises a means for preventing thermal bridging between leaves of the cavity wall.

Preferably, the means for preventing thermal bridging between leaves of the cavity wall is a thermal barrier.

Advantageously, the means for preventing thermal bridging between leaves of the cavity wall prevents the passage of heat through the cavity tray.

Preferably, the means for preventing thermal bridging between leaves of the cavity wall is an insulator.

Preferably, the means for preventing thermal bridging between leaves of the cavity wall is formable from any material having low thermal conductivity.

Preferably, the means for preventing thermal bridging between leaves of the cavity wall is configurable to wrap around the means for delivering internal moisture towards the outer leaf of a cavity wall.

Advantageously, the means for preventing thermal bridging between leaves of the cavity wall prevents the conduction of heat through the means for delivering internal moisture towards the outer leaf of a cavity wall.

Alternatively, the means for preventing thermal bridging between leaves of the cavity wall may be formed as an integral part of the means for delivering internal moisture to the outer leaf of a cavity wall.

Preferably, the means for preventing thermal bridging between leaves of the cavity wall is impervious to water.

Advantageously, this prevents moisture from passing through the means for preventing thermal bridging between leaves of the cavity wall.

Preferably, the means for preventing thermal bridging between leaves of the cavity wall is noncombustible.

Advantageously, in case of a fire, the means for preventing thermal bridging between leaves of the cavity wall will not produce fire pollutants.

Preferably, the means for preventing thermal bridging between leaves of the cavity wall is configurable to press against the means for delivering internal moisture towards the outer leaf of a cavity wall.

Preferably, the means for preventing thermal bridging between leaves of the cavity wall and/or the means for preventing fire pollutants passing between floors/levels of a building via the cavity is configurable to press against a structural support in the cavity.

Preferably, at least part of the means for preventing thermal bridging between leaves of the cavity wall and/or the means for preventing fire pollutants passing between floors/levels of a building via the cavity is configurable to be compressed between the means for delivering internal moisture to the outer cavity leaf of a cavity wall and a structural support.

Preferably, at least part of the means for preventing thermal bridging between leaves of the cavity wall and/or the means for preventing fire pollutants passing between floors/levels of a building via the cavity is configurable to compress against a lower surface of the means for delivering internal moisture towards the outer leaf of a cavity wall.

Preferably, at least part of the means for preventing thermal bridging between leaves of the cavity wall and/or the means for preventing fire pollutants passing between floors/levels of a building via the cavity is configurable to compress against a lower surface of the sloping portion of the cavity tray/means for delivering internal moisture towards the outer leaf of a cavity wall.

Preferably, at least part of the means for preventing thermal bridging between leaves of the cavity wall and/or the means for preventing fire pollutants passing between floors/levels of a building via the cavity is configurable to compress against the intermediate portion of the cavity tray/means for delivering internal moisture towards the outer leaf of a cavity wall.

Preferably, at least part of the means for preventing thermal bridging between leaves of the cavity wall and/or the means for preventing fire pollutants passing between floors/levels of a building via the cavity is configurable to compress against the back of the intermediate portion of the cavity tray/means for delivering internal moisture towards the outer leaf of a cavity wall.

Preferably, at least part of the means for preventing thermal bridging between leaves of the cavity wall and/or the means for preventing fire pollutants passing between floors/levels of a building via the cavity is configurable to press against all other elements in, of and/or surrounding the cavity at an intersection of the cavity wall with a floor slab or window/door opening to close all openings or gaps at such intersection of the cavity wall.

Advantageously, this prevents fire pollutants bypassing the means for preventing fire pollutants passing between floors/levels of a building via the cavity. Further advantageously, this prevents heat from escaping through the openings or gaps at such intersections.

Preferably, the cavity tray is configurable to slot over a structural support.

Preferably, the means for preventing thermal bridging between leaves of the cavity wall and/or the means for preventing fire pollutants passing between floors/levels of a building via the cavity is configurable to slot over a structural support.

Preferably, the means for preventing thermal bridging between leaves of the cavity wall and/or the means for preventing fire pollutants passing between floors/levels of a building via the cavity is configurable to slot under a structural support in a cavity of a cavity wall.

Preferably, the means for preventing thermal bridging between leaves of the cavity wall and/or the means for preventing fire pollutants passing between floors/levels of a building via the cavity is configurable to slot behind a structural support in a cavity of a cavity wall.

Preferably, the means for preventing thermal bridging between leaves of the cavity wall and/or the means for preventing fire pollutants passing between floors/levels of a building via the cavity is locatable between a structural support in a cavity of a cavity wall and the inner leaf of a cavity wall.

Preferably, the means for preventing thermal bridging between leaves of the cavity wall and/or the means for preventing fire pollutants passing between floors/levels of a building via the cavity is configurable to compress between a structural support in a cavity of a cavity wall and the inner leaf of a cavity wall.

Preferably, the cavity tray is cut to easily slot over a structural support.

Preferably, the means for preventing thermal bridging between leaves of the cavity wall and/or the means for preventing fire pollutants passing between floors/levels of a building via the cavity is cut to easily slot over the structural support.

Preferably, the cavity tray is cut to correspond to the shape and size of the portion of the structural support upon which the cavity tray will be slotted.

Preferably, the means for preventing thermal bridging between leaves of the cavity wall and/or the means for preventing fire pollutants passing between floors/levels of a building via the cavity is cut to correspond to the shape and size of the portion of the structural support upon which the means for preventing thermal bridging between leaves of the cavity wall and/or the means for preventing fire pollutants passing between floors/levels of a building via the cavity will be slotted.

Preferably, the cavity tray is cut to correspond to the shape and size of the portion of the structural support so that the cavity tray remains compressed against the structural support upon which the cavity tray is slotted.

Preferably, the means for preventing thermal bridging between leaves of the cavity wall and/or the means for preventing fire pollutants passing between floors/levels of a building via the cavity is cut to correspond to the shape and size of the portion of the structural support so that the means for preventing thermal bridging between leaves of the cavity wall and/or the means for preventing fire pollutants passing between floors/levels of a building via the cavity remains compressed against the structural support upon which the means for preventing fire pollutants passing between floors/levels of a building via the cavity is slotted.

Preferably, the cavity tray is cut to correspond to the shape and size of the portion of the structural support so that there are no gaps or openings between the cavity tray and the structural support upon which the cavity tray is slotted.

Preferably, the means for preventing thermal bridging between leaves of the cavity wall and/or the means for preventing fire pollutants passing between floors/levels of a building via the cavity is cut to correspond to the shape and size of the portion of the structural support upon which the cavity tray is slotted so that there are no gaps between the means for preventing fire pollutants passing between floors/levels of a building via the cavity and the structural support upon which the means for preventing fire pollutants passing between floors/levels of a building via the cavity is slotted.

Preferably, the cavity tray is pre-formed.

Advantageously, this enables easy installation of the cavity tray.

Preferably, the means for preventing thermal bridging between leaves of the cavity wall and/or the means for preventing fire pollutants passing between floors/levels of a building via the cavity is pre-formed.

Preferably, the means for preventing thermal bridging between leaves of the cavity wall and/or the means for preventing fire pollutants passing between floors/levels of a building via the cavity is pre-cut.

Preferably, the means for preventing fire pollutants passing between floors/levels of a building via the cavity is pre-cut to no more than 50% of the way through.

Most preferably, the means for preventing thermal bridging between leaves of the cavity wall and/or the means for preventing fire pollutants passing between floors/levels of a building via the cavity is pre-cut to no more than 25% of the way through.

Advantageously, this maintains the integrity of the means for preventing thermal bridging between leaves of the cavity wall and/or the means for preventing fire pollutants passing between floors/levels of a building via the cavity. Further advantageously, this reduces the risk of fracture of the means for preventing thermal bridging between leaves of the cavity wall and/or the means for preventing fire pollutants passing between floors/levels of a building via the cavity.

Preferably, the means for preventing thermal bridging between leaves of the cavity wall and/or the means for preventing fire pollutants passing between floors/levels of a building via the cavity is modular.

Alternatively, the means for preventing thermal bridging between leaves of the cavity wall and/or the means for preventing fire pollutants passing between floors/levels of a building via the cavity may be formed as one piece.

Preferably, the means for preventing thermal bridging between leaves of the cavity wall and/or the means for preventing fire pollutants passing between floors/levels of a building via the cavity comprises two or more modules.

Preferably, the two or more modules of the means for preventing thermal bridging between leaves of the cavity wall and/or the means for preventing fire pollutants passing between floors/levels of a building via the cavity comprises at least one fire sock.

Preferably, the means for preventing thermal bridging between leaves of the cavity wall and/or the means for preventing fire pollutants passing between floors/levels of a building via the cavity is attachable to the means for delivering internal moisture to the outer leaf of a cavity wall.

Preferably, the means for preventing thermal bridging between leaves of the cavity wall and/or the means for preventing fire pollutants passing between floors/levels of a building via the cavity and the means for delivering internal moisture towards the outer cavity leaf of the cavity wall are configurable be installed together.

Advantageously, this enhances the ease of installation of the cavity tray.

According to a second aspect of the invention there is provided a building comprising a cavity tray according to the first aspect of the invention.

Preferably, the building comprises a cavity wall having an inner leaf and an outer leaf.

The invention will now be described with reference to the accompanying drawings: - Figure 1 is a section view of a cavity tray in a cavity of a building.

Figure 2 is a plan view of an arrangement for preventing the spread of fire pollutants between floors/levels of the building via the cavity and/or for preventing thermal bridging between leaves of the cavity wall.

Figure 3 is a section view of a cavity tray according to the present invention.

Figure 4 is a section view of an adjustable cavity tray according to the present invention.

Figure 5 is a perspective view of a cavity tray having ribs.

Figure 6 is a perspective view of a cavity tray having an arrangement for enhancing adhesion between the cavity tray and masonry adhesive.

Figure 7 is second a perspective view of a cavity tray having an arrangement for enhancing adhesion between the cavity tray and masonry adhesive.

Figure 8 is a third perspective view of a cavity tray having an arrangement for enhancing adhesion between the cavity tray and masonry adhesive.

Figure 9 is a perspective view of a cavity tray having an arrangement for enhancing adhesion between the cavity tray and masonry adhesive on a selected portion of the cavity tray.

Figure 10 is a front view of a cavity tray according to the present invention having a channel which extends downwardly from the main planar surface of the cavity tray.

Figure 11 is a detailed view of figure 10.

Figure 12 is a perspective view of a cavity tray according to the present invention having a channel which extends downwardly from the main planar surface of the cavity tray.

Figure 13 is a detailed view of figure 12.

Figure 14 is a detailed view of figure 13.

Figure 15 is a detailed view of figure 14.

Figure 16 is a schematic view showing an arrangement of overlapping cavity trays according to the prior art wherein the underlying cavity tray does not have a channel which extends downwardly from the main planar surface of the cavity tray.

Figure 17 is a detailed view of figure 16.

Figure 18 is a schematic view of an arrangement of overlapping cavity trays wherein the underlapping cavity tray has a channel which extends downwardly from the main planar surface of the cavity tray according to the present invention.

Figure 19 is a detailed view of figure 18.

Figure 23 is a front view of a cavity tray according to the present invention having a channel which extends downwardly from the main planar surface of the cavity tray and a means for enhancing adhesion between the cavity tray and masonry adhesive.

In the drawings there is shown a cavity tray indicated generally by reference numerals 1 and/or 40 for a cavity wall of a building having a channel which extends downwardly from the main planar surface 70 of the cavity tray. The cavity tray 1, 40 is quadrilateral in shape from a front view, having two longitudinal ends and two lateral ends. By main planar surface, we mean the surface of the cavity tray that extends between the lateral ends and/or longitudinal ends of the cavity tray. By downwardly, we mean downwardly when the cavity tray is in an in-use position. The channel 70 extends downwardly from the main planar surface 71 of the cavity tray 1, 40 at one or more lateral ends 65 of the cavity tray 1,40. The channel which extends downwardly from the main planar surface of the cavity tray 70 forms a downward step 72 from the main planar surface 71 of the cavity tray 1,40 at one or more lateral ends 65 of the cavity tray 1, 40. The channel which extends downwardly from the main planar surface of the cavity tray 70 is formed on a portion of the cavity tray 1, 40 which, in use, is overlapped by an adjacent cavity tray. The channel which extends downwardly from the main planar surface of the cavity tray 70 is formed on a portion of the cavity tray 1, 40 which, in use, underlies a portion of an adjacent cavity tray. This reduces the distance between the main planar surfaces of overlapping cavity trays. The channel which extends downwardly from the main planar surface of the cavity tray 70 extends downwardly by up to 10mm/by approximately 4mm. Referring to figures 5 and 10 to 19, the cavity tray 1,40 has one or more ribs 41 to prevent the lateral movement of moisture across the cavity tray 1,40 and/or over the end of the cavity tray 1,40. In this embodiment, the cavity tray 1, 40 has a plurality of equispaced ribs 41 to prevent the lateral movement of moisture across the cavity tray 1, 40 and/or over the end of the cavity tray 1, 40. The one or more ribs 41 are located at one or both lateral ends 65 of the cavity tray 1 ,40. The channel which extends downwardly from the main planar surface of the cavity tray 70 has one or more ribs 41 to prevent the lateral movement of moisture across the cavity tray 1,40 and/or over the end of the cavity tray 1,40. In this embodiment, the channel which extends downwardly from the main planar surface of the cavity tray 70 has a plurality of equispaced ribs 41 to prevent the lateral movement of moisture across the cavity tray 1, 40 and/or over the end of the cavity tray 1, 40. The one or more ribs 41 are located on the channel which extends downwardly from the main planar surface of the cavity tray 70. The one or more ribs 41 are located at one or both lateral ends 65 of the cavity tray 1, 40 perpendicular to the longitudinal axis of the cavity tray. The one or more ribs 41 extend upwardly from the cavity tray 1,40. The one or more ribs 41 extend upwardly from the channel which extends downwardly from the main planar surface of the cavity tray 70. The one or more ribs 41 extend from the cavity tray by up to 10mm/by approximately 4mm. The one or more ribs 41 extend upwardly from the channel which extends downwardly from the main planar surface of the cavity tray 70 by up to 10mm/by approximately 4mm. In this embodiment, the one or more ribs 41 extend upwardly from the cavity tray 1,40 at a length equal to the downwardly extending length of the channel which extends downwardly from the main planar surface of the cavity tray 70. The one or more ribs 41 extend upwardly from the channel which extends downwardly from the main planar surface of the cavity tray 70 at a length equal to the downwardly extending length of the channel which extends downwardly from the main planar surface of the cavity tray 70. The channel which extends downwardly from the main planar surface of the cavity tray 70 extends downwardly at a parameter equal to the length of which the one or more ribs 41 extend upwardly from the cavity tray 1,40. The apex of the one or more ribs 41 is at the same planar height as the main planar surface 71 of the cavity tray 1,40, as illustrated in figures 18 and 19. This reduces the gap between adjacent overlapping cavity trays. Thereby, this prevents moisture ingressing into such a gap. This is in comparison to the gap between adjacent overlapping cavity trays wherein the bottom tray does not comprise a channel which extends downwardly from the main planar surface of the cavity tray and thereby the apex of the one or more ribs is up to 10mm/is approximately 4mm above the height of the main planar surface of the bottom cavity tray, as illustrated in figures 16 and 17. This further enables easier installation of adjacent overlapping cavity trays and is more aesthetically pleasing. Figure 5 illustrates overlapping cavity trays 40, 42, 43. In this embodiment, cavity tray 42 overlaps cavity tray 40 having ribs 41 which abut against the overlapping surface of cavity tray 42. Cavity tray 40 overlaps cavity tray 43 having ribs 41 which abut against the overlapping surface of cavity tray 40.

As illustrated in figures 16 and 17, where the underlying cavity tray 40 does not have a channel which extends downwardly from the main planar surface of the cavity tray 70, a gap forms between the adjacent overlapping cavity trays 40, 42 at areas indicated by reference numeral 80. It can be difficult if not impossible to get mortar into these gaps 80. Therefore, moisture may ingress into the gaps between the adjacent overlapping cavity trays 40, 42 at areas indicated by reference numeral 80.

In contrast, it is clear from figures 18 and 19 that where the underlying cavity tray 40 has a channel which extends downwardly from the main planar surface of the cavity tray 70, the gap between the main planar surfaces 71 and 81 of respective adjacent overlapping cavity trays 40 and 42 is significantly reduced which prevents the ingress of moisture therebetween.

The cavity tray has one or more intermediate channels 73 which extend between two ribs 41 and/or between one of the ribs 41 and another upstanding portion of the cavity tray such as stop end 64. The channel which extends downwardly from the main planar surface of the cavity tray 70 has one or more intermediate channels 73 which extend between two ribs 41 and/or between one rib 1 and another upstanding portion of the cavity tray such as stop end 64. The one or more intermediate channels 73 are configurable to direct moisture towards the outer leaf of the cavity wall. The one or more intermediate channels 73 extend between two equally spaced ribs 41. In the embodiment illustrated in figures 10 to 14, the cavity tray comprises a plurality of intermediate channels 73. In the embodiment illustrated in figures 10 to 14, the channel which extends downwardly from the main planar surface of the cavity tray 70 has a plurality of intermediate channels 73. The plurality of intermediate channels 73 are of a uniform configuration. The plurality of intermediate channels 73 are of uniform depth, width and/or length.

The one or more ribs 41 are located on a portion of the cavity tray that underlies a portion of an adjacent cavity tray. Locating the one or more ribs 41 on a portion of the cavity tray that underlies an adjacent cavity tray enables the prevention of lateral movement of moisture across the cavity tray joint and/or over the end of the cavity tray without the requirement of aligning the cavity tray with perpend joints of the wall. The one or more ribs 41 extend at least partially along the width of the cavity tray. The one or more ribs 41 extend along the entire width of the cavity tray. By width, we mean in the direction from the leading edge of the cavity tray adjacent to the front of the outer leaf of the cavity wall to the trailing edge of the cavity tray disposed within the cavity of the cavity wall when the cavity tray is in use. In use, the one or more ribs 41 abut against the overlapping surface of an adjacent cavity tray. This reduces the distance between the main planar surfaces of the adjacent, overlapping cavity trays. Thereby, this reduces the gap between the overlapping cavity trays. The one or more ribs 41 act to reinforce the cavity tray. The one or more ribs 41 are shaped to provide structural reinforcement of the cavity tray. The ribs 41 are shaped to create bends 46, as illustrated in figure 15. The bends 46 reduce the distance between intermediate channels 73 and therefore increase the structural reinforcement of the cavity tray. In this embodiment, the ribs 41 are U-shaped. However, the ribs 41 may be V-shaped, trapezoidal or any other shape suitable for providing reinforcement to the cavity tray.

The cavity tray 1,40 has an arrangement for enhancing adhesion between the cavity tray and masonry adhesive 60. Referring to figures 6 to 9 and figure 20, the enhanced adhesion prevents a gap forming between the cavity tray 1, 40 and the masonry adhesive. This prevents moisture travelling between the cavity tray 1, 40 and the masonry adhesive and into or across the cavity of the cavity wall. By masonry adhesive, we mean any adhesive such as mortar which is capable of binding masonry blocks or bricks together or to other elements. The arrangement for enhancing adhesion between the cavity tray and masonry adhesive 60 is formed on one or more surfaces of the cavity tray 1, 40 which contact masonry adhesive, in use. Alternatively, the arrangement for enhancing adhesion between the cavity tray and masonry adhesive may be formed on all surfaces of the cavity tray 1,40. The arrangement for enhancing adhesion between the cavity tray and masonry adhesive 60 has a rough, uneven, patterned, raised checkered, stippled and/or any combination of these surfaces formed on the cavity tray 1, 40. The rough, uneven, patterned, raised checkered, stippled and/or any combination of these surfaces will increase engagement of the cavity tray 1, 40 with the masonry adhesive thereby preventing a gap forming between the cavity tray and masonry adhesive. This further prevents separation of the the masonry adhesive from the cavity tray 1, 40 as the masonry adhesive dries/hardens/cures. In use, the arrangement for enhancing adhesion between the cavity tray and masonry adhesive 60 is configurable to engage with masonry adhesive to resist separation of the masonry adhesive relative to the cavity tray 1, 40. The arrangement for enhancing adhesion between the cavity tray and masonry adhesive 60 has indents, perforations, ribs, deformations and/or any other arrangement suitable to ensure a good bond with the masonry adhesive. The arrangement for enhancing adhesion between the cavity tray and masonry adhesive 60 is non-combustible. The arrangement for enhancing adhesion between the cavity tray and masonry adhesive 60 is impervious to moisture. As illustrated in figures 1 and 3 to 14, the integrity of the surfaces of the cavity tray 1, 40 are not compromised. In particular, the integrity of the surfaces of the cavity tray 1, 40 which engage with masonry adhesive are not compromised. The surfaces of the cavity tray which engage with masonry adhesive are free from perforations, holes, slots or any other openings. The integrity of the surfaces of the cavity tray 1,40 which are horizontal or substantially horizontal when the cavity tray is in use are not compromised. The surfaces of the cavity tray 1,40 which are horizontal or substantially horizontal when the cavity tray is in use are free from perforations, holes, slots or any other openings. The arrangement for enhancing adhesion between the cavity tray and masonry adhesive 60 does not compromise the integrity of the surfaces of the cavity tray 1,40 which engage with masonry adhesive. The arrangement for enhancing adhesion between the cavity tray and masonry adhesive 60 allows the integrity of the surfaces of the cavity tray 1, 40 to be maintained. The arrangement for enhancing adhesion between the cavity tray and masonry adhesive 60 is free from perforations, holes, slots or any other openings. The arrangement for enhancing adhesion between the cavity tray and masonry adhesive 60 increases engagement of the cavity tray 1,40 with masonry adhesive without the use of perforations or holes. Being free from perforations and holes will prevent moisture from gathering in holes and/or from travelling between the cavity tray 1,40 and the masonry adhesive and/or toward the inner leaf 4 of the cavity wall via these openings.

The cavity tray 1, 40 illustrated in figures 1 and 3 to 19 is non-combustible and is impervious to water. The cavity tray 1, 40 has an arrangement for delivering internal moisture towards the outer leaf of a cavity wall 2. This means that the cavity tray 1,40 prevents the ingress of moisture within the cavity. The arrangement for delivering internal moisture towards the outer leaf of a cavity wall 2 is configurable to extend into the cavity. The cavity tray 1, 40 is configurable to engage with the outer leaf of a cavity wall. The cavity tray 1,40 is configurable to extend into the cavity from the outer leaf of the cavity wall. The cavity tray is configured to engage with the outer leaf 5 of a cavity wall. The cavity tray 1,40 and/or the arrangement for delivering internal moisture towards the outer leaf of a cavity wall 2 is configured to engage with the outer leaf 5 of the cavity wall and to be secured between masonry of the outer leaf 5. This retains the position of the cavity tray 1, 40/the arrangement for delivering internal moisture towards the outer leaf 2 of a cavity wall in the cavity.

The cavity tray 1, 40/arrangement for delivering internal moisture towards the outer leaf of a cavity wall 2 has a lower portion 10, and upper portion 12 and a middle portion 11. The middle portion 11 extends between the lower portion 10 and the upper portion 12. The lower portion 10 is configured to engage with the outer leaf 5 of a cavity wall. The lower portion 10 is mountable on the outer leaf 5 of the cavity wall. The lower portion 10 is configured to be secured between masonry of the outer leaf 5 of the cavity wall. The lower portion 10 has a horizontal portion 61. The arrangement for enhancing adhesion between the cavity tray and masonry adhesive 60 is formed on the lower portion 10. The arrangement for enhancing adhesion between the cavity tray and masonry adhesive 60 may be formed only on the lower portion 10 of the cavity tray 1, 40/arrangement for delivering internal moisture towards the outer leaf of a cavity wall 2, as illustrated in figure 12. Forming the arrangement for enhancing adhesion between the cavity tray and masonry adhesive 60 only on the lower portion 10 reduces processing time of the cavity tray 1, 40 during manufacture. The arrangement for enhancing adhesion between the cavity tray and masonry adhesive 60 is formed on a lower surface 62 and on an upper surface 63 of the lower portion 10. The arrangement for enhancing adhesion between the cavity tray and masonry adhesive 60 may formed on all surfaces of the lower portion 10.

At least part of the cavity tray 1, 40 and/or the arrangement for delivering internal moisture towards the outer leaf of a cavity wall 2 is locatable at, about or above a gap or opening in the inner leaf of a cavity wall or at, about or at, about or above a structural support in the cavity of a cavity wall.

The arrangement for delivering internal moisture towards the outer leaf of a cavity wall 2 is impervious to water, is non-combustible.

The cavity tray 1, 40 has a sloping portion 14. The middle portion 11 has a sloping portion 14 and intermediate portion 15 for connecting the sloping portion 14 and the lower portion 10 of the cavity tray 1, 40 and/or arrangement for delivering internal moisture towards the outer leaf of a cavity wall. Alternatively, the sloping portion 14 may be directly connected to the lower portion 10. In use, the sloping portion 14 extends upwardly between the outer leaf 5 towards the inner leaf 4 of the cavity wall so that the upper portion 12 is at a higher level than the lower portion 10. Therefore, the sloping portion 14 creates a downward flow path for moisture within the cavity towards the outer leaf. This prevents moisture stagnating in the cavity or on the lower portion 10. The sloping portion 14 extends across part of or the full depth of the cavity and has an upper surface and a lower surface. In use, the upper surface of the sloping portion 14 is configured to catch or intercept moisture falling from above and directs it towards the outer leaf 5 of the cavity wall. The upper portion 12 extends upwardly from the sloping portion 14.

The cavity tray 1, 40 has an arrangement for draining moisture out of the cavity. The arrangement for delivering internal moisture towards the outer leaf of a cavity wall 2 has an arrangement for draining moisture out of the cavity. In use, the arrangement for draining moisture out of the cavity is mountable between masonry of the outer leaf 5 of the cavity wall. This enables moisture to bypass the masonry and prevents accumulation of moisture at the inner surface of the outer leaf 5. This is in comparison to the moisture being absorbed by the bricks. The arrangement for draining moisture from the cavity has a weep vent.

The cavity tray 1,40 has a stop end 64 to prevent internal moisture cascading over the end of the arrangement for delivering internal moisture towards the outer leaf of a cavity wall 2 into the cavity. The stop end extends from the upper portion 12 to the lower portion 10.

The cavity tray 1,40 is configurable to extend into the cavity, supported only by the outer leaf of the cavity wall. This mitigates the requirement of mechanically fixing the cavity tray 1,40 to the inner leaf of the cavity wall thereby reducing the amount of time and material used during installation of the cavity tray 1,40.

The cavity tray 1,40 is configured to be self-supporting within the cavity. The cavity tray 1,40, 40 is configured to remain upright in the cavity while being fixed to and/or mounted on the outer leaf 5 of the cavity wall only. The cavity tray 1, 40 is configured to remain upright within the cavity without being fixed to the inner leaf 4 of the cavity wall. The cavity tray 1,40 is configurable to not be fixed to the inner leaf 4 of the cavity wall to remain upright within the cavity. The cavity tray 1, 40 is not supported by the inner leaf 4 of the cavity wall. The cavity tray 1,40 does not contact the inner leaf 4 of the cavity wall. The cavity tray 1,40 is only fixed to the outer leaf 5 of the cavity wall and/or is fixed between masonry of the outer leaf 5. The cavity tray 1,40 is only supported by the outer leaf 5 of the cavity wall. The cavity tray 1, 40 does not engage with the inner leaf 4 of the cavity wall. The cavity tray 1, 40 illustrated in figures 1, 3 and 5 to 19 is a one-piece cavity tray. However, the same features can be used on a modular cavity tray/a cavity tray formed from multiple pieces. This means it is possible to design the cavity tray 1,40 so that it extends only a predetermined distance from the outer leaf 5 so that it works across the entire range of cavity widths.

In the embodiment illustrated in figure 4, the cavity tray 1, 40 is adjustable. The arrangement for delivering internal moisture towards the outer leaf of a cavity wall 2 is adjustable to correspond with the width of the cavity in which it is disposed. The cavity tray 1,40/arrangement for delivering internal moisture towards the outer leaf of a cavity wall 2 is extendable. In one embodiment, the cavity tray 1, 40/arrangement for delivering internal moisture towards the outer leaf of a cavity wall 2 is modular, and has an upper module 20 and a lower module 21. In use, the upper module 20 is configured to overlap the lower module 21 by at least 25mm, as illustrated in figure 4. In use, the upper module 20 is secured to the inner leaf 4 of the cavity wall via self-tapping screws. This retains the position of the upper module 20 in the cavity. The lower module 21 is secured between masonry of the outer leaf 5 of the cavity wall. The lower portion 10 is located on the lower module 21 and is secured between masonry of the outer leaf 5. The upper portion 12 is located on the upper module 20 and is secured to the inner leaf 4 of the cavity wall via self-tapping screws. The lower portion 10 is a substantially rectangular shape having two longitudinal edges and two lateral edges. The middle portion 11/sloping portion 14 is divided between the upper module 20 and lower module 21. In use, the middle portion 11/sloping portion 14 on the upper module 20 is arrangeable to overlap the middle portion 11/sloping portion 14 on the lower module 21. When the cavity tray has an intermediate portion 15, the intermediate portion 15 is located on the lower module 21 and extends upwardly from the lower portion 10. In use, the sloping portion 14 extends between the intermediate portion 15 and the upper portion 12, across the cavity of the cavity wall, towards the inner leaf 4 of the cavity wall.

The intermediate portion 15 has a back surface and a front surface which faces the inner surface of the outer leaf 5. As illustrated in figure 1, the cavity tray is locatable such that there is a gap between the front surface of the intermediate portion 15 and the inner surface of the outer leaf 5 to enable moisture to flow down the front surface to the arrangement for draining moisture from the cavity. The width of the lower portion 10 is adjustable correspond with the width of the outer leaf 5 of the cavity wall. The lower portion 10 is configurable to be trimmed. Therefore, in use, any portion of the lower portion 15 extending beyond the outer surface of the outer leaf 5 can be trimmed as required. In one embodiment, the arrangement for delivering internal moisture towards the outer leaf of the cavity wall 2 is flexible and adjustable.

As illustrated in figures 6 to 9, stop end 64 is formed from a folded portion of a lateral edge of the cavity tray 1,40/arrangement for delivering internal moisture towards the outer leaf of a cavity wall 2. In use, the stop end 64 of adjacent cavity trays abut against each other. Alternatively, adjacent cavity trays and/or the means arrangement for delivering moisture toward the outer leaf of a cavity wall 2 of adjacent cavity trays are overlapped.

The cavity tray 1 has an arrangement for preventing fire pollutants passing between floors/levels of the building via the cavity 3. This means that the cavity tray 1 prevents the spread of fire pollutants from one floor to another and therefore improves the safety of multi-storey buildings. By fire pollutants we mean smoke, flames, fumes and any other emissions produced by combustion. The arrangement for preventing fire pollutants passing between floors/levels of a building via the cavity 3 is non-combustible, fire resistant and impervious to fire pollutants and moisture. This means, in case of a fire, the arrangement for preventing fire pollutants passing between floors/levels of a building via the cavity 3 will not produce fire pollutants further adding to the existing fire pollutant problem. The arrangement for preventing fire pollutants passing between floors/levels of a building via the cavity 3 is a thermal barrier and an insulator. This means the arrangement for preventing fire pollutants passing between floors/levels of a building via the cavity prevents the passage of heat between floors or levels of the building via the cavity. The arrangement for preventing fire pollutants passing between floors/levels of a building via the cavity 3 is formable from any material having low thermal conductivity. The arrangement for preventing fire pollutants passing between floors/levels of a building via the cavity 3 is arrangeable to extend across the cavity, between the outer leaf 5 and the inner leaf 4. This prevents fire pollutants from passing between floors/levels of a building via the cavity.

The arrangement for preventing fire pollutants passing between floors/levels of a building via the cavity 3 is configured to engage with the outer leaf 5 and the inner leaf 4 of the cavity wall. The arrangement for preventing fire pollutants passing between floors/levels of a building via the cavity 3 is arranged to seal the cavity. When we say seal the cavity, we mean across the cavity between the inner leaf and the outer leaf and also along the cavity as far as the outer leaf and inner leaf extend around the building. This provides the cavity with sealed cavity compartments to prevent the spread of fire pollutants between the floors/levels of the building. In use, the arrangement for preventing fire pollutants passing between floors/levels of a building via the cavity 3 of adjacent cavity trays abut against each other.

In one embodiment, the cavity tray 1 has a fire sock 6. The arrangement for preventing fire pollutants passing between floors/levels of a building via the cavity 3 has a fire barrier. The arrangement for preventing fire pollutants passing between floors/levels of a building via the cavity 3 has at least one fire sock 6.

At least part of the arrangement for preventing fire pollutants passing between floors/levels of a building via the cavity 3 is compressible. This enhances the ease of installation of the arrangement for preventing fire pollutants passing between floors/levels of a building via the cavity 3 into small spaces. At least part or parts of the arrangement for preventing fire pollutants passing between floors/levels of a building via the cavity is configured to compress against the inner leaf 4, outer leaf 5 and/or surface of a floor slab 8 facing into the cavity. This prevents the formation of gaps or openings between the arrangement for preventing fire pollutants passing between floors/levels of a building via the cavity and the inner leaf 4, outer leaf 5 and/or surface of a floor slab 8 facing into the cavity.

The arrangement for preventing fire pollutants passing between floors/levels of a building via the cavity 3 is configured to seal any gaps or openings in inner leaf 4 of the cavity wall and the floor slab. The arrangement for preventing fire pollutants passing between floors/levels of a building via the cavity 3 is configured to provide continuity of fire barrier and insulation where the arrangement for delivering internal moisture towards the outer leaf of a cavity wall 2 is not contained within the depth of the slab, as indicated in figures 1 and 2 by line 30. This prevents the re-routing of fire pollutants and heat to other compartments of the cavity or building. The arrangement for preventing fire pollutants passing between floors/levels of a building via the cavity 3 is locatable at, about or above a gap or opening in the inner leaf of a cavity wall or at, about or at, about or above a structural support in the cavity of a cavity wall. The arrangement for preventing fire pollutants passing between floors/levels of a building via the cavity 3 is configured to extend across a junction between a floor slab and the inner leaf 4 of a cavity wall. The arrangement for preventing fire pollutants passing between floors/levels of a building via the cavity is locatable below the arrangement for delivering internal moisture towards the outer leaf of a cavity wall 2 and above a structural support 9. This closes the gap between the arrangement for delivering internal moisture towards the outer leaf of a cavity wall 2 and the structural support 9.

The cavity tray 1 is impervious to fire pollutants. The cavity tray 1 has a fire barrier. This enables the cavity tray 1 to contain a fire within a compartment of a cavity. The cavity tray 1 is a thermal barrier and an insulator. At least part the cavity tray 1 is formable from any material having low thermal conductivity. At least part the cavity tray 1 is formable from mineral fiber, mineral wool, mica and/or mica sheets, stainless steel, timber, mineral board or combination of material. The cavity tray 1 is arranged to extend across the cavity, between the inner leaf 4 and outer leaf 5 of the cavity wall. This prevents moisture and fire pollutants by-passing the cavity tray. The cavity tray 1 is adjustable to fit all/multiple cavities of different sizes and widths. This reduces the need to manufacture multiple cavity trays of different widths and/or sizes. Alternatively, the cavity tray 1 is pre-configured to correspond to the shape and size of the cavity.

In one embodiment, the cavity tray is configured to engage with the inner leaf 4 of a cavity wall and is arranged to seal the cavity between floors or levels of a building.

The arrangement for delivering internal moisture towards the outer leaf of a cavity wall 2 is arrangeable to extend across the cavity between the outer leaf 5 and inner leaf 4 of a cavity wall and to seal the cavity. The arrangement for delivering internal moisture towards the outer leaf of a cavity wall 2 is configured to engage with the inner leaf 4 of the cavity wall. The arrangement for delivering internal moisture towards the outer leaf of a cavity wall is secured to the inner leaf 4 of a cavity wall.

The cavity tray 1 has an arrangement for preventing thermal bridging between leaves of the cavity wall 16. The arrangement for preventing thermal bridging between leaves of the cavity wall 16 is impervious to water, is non-combustible and is an insulator. The arrangement for preventing thermal bridging between leaves of the cavity wall 16 is formable from any material having low thermal conductivity. The arrangement for preventing thermal bridging between leaves of the cavity wall 16 is configured to wrap around the arrangement for delivering internal moisture towards the outer leaf of a cavity wall 2. Therefore, the arrangement for preventing thermal bridging between leaves of the cavity wall 16 prevents the conduction of heat through the arrangement for delivering internal moisture towards the outer leaf of a cavity wall 2. Alternatively, the arrangement for preventing thermal bridging between leaves of the cavity wall 16 may be formed as an integral part of the arrangement for delivering internal moisture to the outer leaf of a cavity wall 2.

The arrangement for preventing fire pollutants passing between floors/levels of a building via the cavity 3 is configured to press against the arrangement for delivering internal moisture towards the outer leaf of a cavity wall 2 and/or a structural support in the cavity. At least part of the arrangement for preventing fire pollutants passing between floors/levels of a building via the cavity 3 is configured to be compressed between the arrangement for delivering internal moisture to the outer cavity leaf of a cavity wall 2 and a structural support. At least part of the arrangement for preventing fire pollutants passing between floors/levels of a building via the cavity 3 is configured to compress against a lower surface of the sloping portion 14 and the back of the intermediate portion 15 of the arrangement for delivering internal moisture towards the outer leaf of a cavity wall 2. At least part of the arrangement for preventing fire pollutants passing between floors/levels of a building via the cavity 3 is configured to press against all other elements in, of and/or surrounding the cavity at an intersection of the cavity wall with a floor slab or window/door opening to close all openings or gaps at such intersection of the cavity wall. This prevents fire pollutants bypassing the arrangement for preventing fire pollutants passing between floors/levels of a building via the cavity 3.

The cavity tray 1 is configurable to slot over a structural support 9. The arrangement for preventing fire pollutants passing between floors/levels of a building via the cavity 3 is configurable to slot over, behind and/or under a structural support 9. The arrangement for preventing fire pollutants passing between floors/levels of a building via the cavity 3 is locatable between a structural support 9 in the cavity and the inner leaf 4 of the cavity wall. The arrangement for preventing fire pollutants passing between floors/levels of a building via the cavity 3 is configured to compress between a structural support 9 in a cavity and the inner leaf 4 of a cavity wall. The cavity tray 1 is cut to easily slot over structural support 9. The arrangement for preventing fire pollutants passing between floors/levels of a building via the cavity 3 is cut to easily slot over the structural support 9. The cavity tray 1 is cut to correspond to the shape and size of the portion of the structural support 9 so that the cavity tray 1 remains compressed against the structural support 9 upon which the cavity tray is slotted and so that there are no gaps or openings between the cavity tray 1 and the structural support 9 upon which the cavity tray 1 is slotted. The arrangement for preventing fire pollutants passing between floors/levels of a building via the cavity is cut to correspond to the shape and size of the portion of the structural support 9 so that the arrangement for preventing fire pollutants passing between floors/levels of a building via the cavity 3 remains compressed against the structural support 9 and so that there are no gaps between the arrangement for preventing fire pollutants passing between floors/levels of a building via the cavity 3 and the structural support 9 upon which the arrangement for preventing fire pollutants passing between floors/levels of a building via the cavity 3 is slotted.

The cavity tray 1 is pre-formed and pre-cut. This enables easy installation of the cavity tray 1. The arrangement for preventing fire pollutants passing between floors/levels of a building via the cavity 3 is pre-formed and pre-cut. The arrangement for preventing fire pollutants passing between floors/levels of a building via the cavity 3 is pre-cut no more than 50% of the way through. The arrangement for preventing fire pollutants passing between floors/levels of a building via the cavity 3 is pre-cut to no more than 25% of the way through. This maintains the integrity of the arrangement for preventing fire pollutants passing between floors/levels of a building via the cavity3 and reduces the risk of fracture of the arrangement for preventing fire pollutants passing between floors/levels of a building via the cavity 3. The arrangement for preventing fire pollutants passing between floors/levels of a building via the cavity 3 is modular. Alternatively, the arrangement for preventing fire pollutants passing between floors/levels of a building via the cavity 3 may be formed as one piece. The 14/09/2021 arrangement for preventing fire pollutants passing between floors/levels of a building via the cavity 3 has two or more modules 17, 18. The two or more modules 17,18 have at least one fire sock. The arrangement for preventing fire pollutants passing between floors/levels of a building via the cavity 3 is attachable to the arrangeable for delivering internal moisture to the outer leaf of a cavity wall 2. The 5 arrangement for preventing fire pollutants passing between floors/levels of a building via the cavity 3 and the means for delivering internal moisture towards the outer cavity leaf of the cavity wall 2 are configured to be installed together. This enhances the ease of installation of the cavity tray 1.

In another embodiment, the arrangement for delivering internal moisture towards the outer leaf of a cavity wall 2 and/or the arrangement for preventing fire pollutants from passing between 10 floors/levels of a building via the cavity 3 and/or the arrangement for preventing thermal bridging between leaves of the cavity wall 16 are formed as an integral unit.

The skilled man will appreciate that all preferred or optional features of the invention described with reference to only some aspects or embodiments of the invention may be applied to all aspects of the invention.

It will be appreciated that optional features applicable to one aspect of the invention can be used in any combination, and in any number. Moreover, they can also be used with any of the other aspects of the invention in any combination and in any number. This includes, but is not limited to, the dependent claims from any claim being used as dependent claims for any other claim in the claims of this application.

In relation to the detailed description of the different embodiments of the invention, it will be understood that one or more technical features of one embodiment can be used in combination with one or more technical features of any other embodiment where the transferred use of the one or more technical features would be immediately apparent to a person of ordinary skill in the art to carry out a similar function in a similar way on the other embodiment.

The features disclosed in the foregoing description or the following drawings, expressed in their specific forms or in terms of a means for performing a disclosed function, or a method or a process of attaining the disclosed result, as appropriate, may separately, or in any combination of such features be utilised for realising the invention in diverse forms thereof as defined in the appended claims.

Claims

1. A non-combustible cavity tray comprising a channel which extends downwardly from the main planar surface of the cavity tray.

2. A non-combustible cavity tray according to claim 1, wherein the channel extends downwardly from the main planar surface of the cavity tray at one or both lateral ends of the cavity tray.

3. A non-combustible cavity tray according to any preceding claim, wherein the channel which extends downwardly from the main planar surface of the cavity tray forms a downward step from the main planar surface of the cavity tray at one or both lateral ends of the cavity tray.

4. A non-combustible cavity tray according to any preceding claim, wherein the channel which extends downwardly from the main planar surface of the cavity tray, in use, underlies a portion of an adjacent cavity tray. 5. Which extends downwardly from the main planar surface of the cavity tray extends downwardly by approximately 4mm.

5. A non-combustible cavity tray according to any preceding claim, wherein the cavity tray comprises one or more ribs to prevent the lateral movement of moisture across the cavity tray and/or over the end of the cavity tray.

6. A non-combustible cavity tray according to claim 5, wherein the cavity tray comprises a plurality of equispaced ribs.

7. A non-combustible cavity tray according to claim 5 or claim 6, wherein the one or more ribs are located on one or both lateral ends of the cavity tray.

8. A non-combustible cavity tray according to any one of claims 5 to claim 7, wherein the one or more ribs are located on the channel which extends downwardly from the main planar surface of the cavity tray.

9. A non-combustible cavity tray according to any one of claims 5 to 8, wherein the one or more ribs extend upwardly from the channel which extends downwardly from the main planar surface of the cavity tray.

10. A non-combustible cavity tray according to claim 9, wherein the one or more ribs extend upwardly at a length equal to the downwardly extending length of the channel which extends downwardly from the main planar surface of the cavity tray.

11. A non-combustible cavity tray according to any preceding claim, wherein the channel

12. A non-combustible cavity tray according to any one of claims 5 to 9, wherein the one or more ribs extend upwardly from the channel which extends downwardly from the main planar surface of the cavity tray by approximately 4mm. 10

13. A non-combustible cavity tray according to any one of claims 5 to 12, wherein the apex of the one or more ribs is at the same planar height as the main planar surface of the cavity tray. 14. /09/2021 configurable to resist relative movement between the cavity tray and the masonry adhesive when the cavity tray is in use. 20. A non-combustible cavity tray according to any preceding claim, wherein the cavity tray is free from perforations, holes and/or any other openings. 5 21. A non-combustible cavity tray according to any preceding claim, wherein the cavity tray comprises a stop end to prevent internal moisture cascading over the end of the cavity tray. 22. A non-combustible cavity tray according to claim 21, wherein the stop end is formed as a folded portion of a lateral edge of the cavity tray. 10 23. A non-combustible cavity tray according to any preceding claim, wherein the cavity tray is configurable to extend into the cavity, supported only by the outer leaf of the cavity wall. 24. A non-combustible cavity tray according to any preceding claim, wherein the cavity tray is formed from stainless steel.

14. A non-combustible cavity tray according to any one of claims 5 to 13, wherein the one or more ribs are located on a portion of the cavity tray that underlies a portion of an 15 adjacent cavity tray, in use. 15. A non-combustible cavity tray according to claim 14, wherein the one or more ribs abut against the overlapping surface of an adjacent cavity tray. 16. A non-combustible cavity tray according to any one of claims 5 to 15, wherein the cavity tray comprises one or more intermediate channels which extend between two 20 ribs and/or between a rib and another upstanding portion of the cavity tray. 17. A non-combustible cavity tray according to claim 16, wherein the one or more intermediate channels are configurable to direct moisture towards the outer leaf of the cavity wall. 18. A non-combustible cavity tray according to any preceding claim, wherein the cavity 25 tray comprises a means for enhancing adhesion between the cavity tray and the masonry adhesive formed on one or more surfaces of the cavity tray. 19. A non-combustible cavity tray according to claim 18, wherein the means for enhancing adhesion between the cavity tray and the masonry adhesive is 14/09/2021

15. 25. A building comprising a cavity wall having an inner leaf and an outer leaf, the building further comprising a non-combustible cavity tray for use in the cavity wall, the noncombustible cavity tray comprising a channel which extends downwardly from the main planar surface of the cavity tray.