EP2028326B1 - Espaceur pour murs creux, bâtiment et procédé - Google Patents

Espaceur pour murs creux, bâtiment et procédé Download PDF

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Publication number
EP2028326B1
EP2028326B1 EP07253268.2A EP07253268A EP2028326B1 EP 2028326 B1 EP2028326 B1 EP 2028326B1 EP 07253268 A EP07253268 A EP 07253268A EP 2028326 B1 EP2028326 B1 EP 2028326B1
Authority
EP
European Patent Office
Prior art keywords
cavity wall
projection
spacer
moisture
building
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP07253268.2A
Other languages
German (de)
English (en)
Other versions
EP2028326A1 (fr
Inventor
Charles William Jack Ayers
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Surecav Ltd
Original Assignee
Surecav Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Surecav Ltd filed Critical Surecav Ltd
Priority to EP07253268.2A priority Critical patent/EP2028326B1/fr
Priority to CA2639142A priority patent/CA2639142C/fr
Priority to US12/229,009 priority patent/US20090056263A1/en
Publication of EP2028326A1 publication Critical patent/EP2028326A1/fr
Application granted granted Critical
Publication of EP2028326B1 publication Critical patent/EP2028326B1/fr
Active legal-status Critical Current
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/70—Drying or keeping dry, e.g. by air vents
    • E04B1/7069—Drying or keeping dry, e.g. by air vents by ventilating
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
    • E04B1/76—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to heat only
    • E04B1/7608—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to heat only comprising a prefabricated insulating layer, disposed between two other layers or panels
    • E04B1/7612—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to heat only comprising a prefabricated insulating layer, disposed between two other layers or panels in combination with an air space

Definitions

  • the present invention relates to a cavity wall spacer, a building structure and method.
  • Cavity walls are generally more effective for improving thermal insulation and inhibiting of moisture penetration compared to solid walls.
  • Cavity walls consist of two walls or "leaves" of masonry separated by a cavity or gap. Typically, the walls are 100mm thick, separated by a 50mm gap.
  • the walls may be constructed from bricks, concrete blocks, hollow clay bricks, timber framing, natural stone, or a combination of these materials.
  • the exterior wall or leaf is usually constructed from bricks. The exterior leaf and the interior leaf are tied together at spaced intervals with wall ties spanning the cavity.
  • GB 2 388 614 describes a cavity wall spacer which inhibits the transfer of moisture from the exterior leaf to the interior leaf, and having the features of the preamble of claim 1.
  • EP 0 628 678 A1 discloses a cavity floor element having projections which extend across a cavity between components of a floor.
  • a chamber is provided at one end of the projections which allows for flexing of the end of the projections to accommodate an uneven supporting floor.
  • U1 discloses cavity floor boarding elements for rooms having small heights. Supports are provided which extend across a floor cavity between a supporting floor and a covering layer. Recesses and bulges on the supports are provided which enable overlaid boarding elements to snap fit together.
  • a cavity wall spacer comprising: a support body; and a plurality of spaced building element separating projections upstanding from the support body which are extendable across a cavity between two leaves of a wall to determine a separation of building elements of said two leaves of said wall during construction, characterised in that each projection has a recessed moisture transfer inhibiting channel extending at least partially circumferentially thereabout which inhibits the passage of moisture along the length of the projection whereby to inhibit transfer of moisture between two leaves of a wall and in that each projection has a lenticular cross-section completely defined by two intersecting arcs.
  • the first aspect recognises that a problem with the existing cavity wall spacers is that they either have no moisture barrier rib, in which case more moisture than may be desirable can track along the length of the projection from the external leaf to the internal leaf, or they have a moisture barrier rib and this causes moisture to gather and then drip into the cavity in the vicinity of the moisture barrier rib. Also, a problem with arrangements having moisture barrier ribs is that when the sheets of cavity wall spacers are stacked for storage or transport the packing density of the sheets is low since the barrier rib prevents close stacking of the sheets. Furthermore, these barrier ribs can become damaged.
  • the first aspect provides at least one projection, and more typically a plurality of projections, each having a recessed channel.
  • the recessed channel or groove helps to prevent the passage of moisture along the length of the projection which provides an efficient way of preventing moisture travelling between the two leaves of the wall.
  • a recessed channel reduces the amount of moisture which drips into the cavity since the moisture is more likely to track back along the surface of the projection.
  • providing a recessed channel ensures no external obstruction on the projections which helps to achieve a significantly improved stacking density.
  • the projections are less prone to any damage since there are no external protrusions.
  • the recessed channel is operable to cause moisture flowing from one end of the projection to another to collect therein. Accordingly, the recessed channel provides a depression or gully into which any moisture travelling along the length of the projection may accumulate.
  • the recessed channel is operable to cause the moisture collected therein to gather at a moisture-release point.
  • the channel acts as a conduit along which the accumulated moisture may flow to a moisture-release point. It will be appreciated that in practice small droplets will accumulate in the recessed channel which will combine into larger droplets which, once a sufficient mass has been achieved, will overcome surface tension and will flow along the recessed channel under gravity to the underside of the recessed channel when installed in the cavity.
  • the underside of the channel when installed in the cavity may provide two moisture-release points, one at each side of the recessed channel.
  • each projection is tapered towards its distal end and the recessed channel is operable to direct moisture gathered at the moisture-release point towards that projection's proximal end.
  • any moisture gathered at the moisture-release point (which is typically on the underside of the projection when installed in the cavity) will be likely to travel under gravity back along the outer surface of the projection back towards the support body rather than drip into the cavity itself.
  • the recessed channel is located between proximal and distal ends of the projection.
  • the recessed channel is located towards the distal end of the projection.
  • the recessed channel is located in a distal face of the projection.
  • the recessed channel may be formed in the tip of the projection.
  • the recessed channel extends entirely circumferentially about the projection.
  • each projection is hollow. It will be appreciated that providing a hollow projection increases the stacking density.
  • the support body and the projections are integrally formed.
  • each projection extends transversely of the support body.
  • each projection extends from a face of the support body.
  • a building structure incorporating one or more cavity wall spacers according to the first aspect in a cavity wall of the building structure.
  • the cavity wall spacers are located at spaced intervals in the cavity wall of the building structure
  • a method of erecting a building having a cavity wall of two or more leaves comprising the steps of: erecting part of one leaf of the cavity wall of the building; securing to the erected part of the one leaf of the cavity wall a cavity wall spacer according to the first aspect, and erecting at least part of another leaf of the cavity wall of the building in a position spaced from the one leaf by a distance determined by the cavity wall spacer.
  • the spacer device is orientated in the cavity wall of the building so that the support body of the cavity wall spacer is against an inner face of an exterior leaf of the cavity wall and the plurality of projections of the support body extends toward an interior leaf of the cavity wall of the building.
  • the cavity wall spacer is orientated so that distal ends of the plurality of projections abut an inner face of the interior leaf of the cavity wall of the building.
  • a cavity wall spacer generally 11, according to one embodiment
  • the cavity wall spacer 11 is integrally formed by vacuum moulding and has a support body 12 with a plurality of projections 13 extending transversely from the plane of the support body 12.
  • Figure 1 shows just one projection 13, this is just one portion of the support body 12 which is a laminar sheet having overall dimensions of 1200mm by 450mm and a depth of 50mm with a plurality of these projections 13 extending therefrom as shown in more detail in Figure 5 .
  • the support body 12 and the projections 13 of the spacer device 11 are made from a plastics material which is high-density polyethylene (HDPE) having a thickness of around 2mm.
  • HDPE high-density polyethylene
  • the plurality of projections 13 are longitudinal and have a proximal end 14 located adjacent to an inner face of the support body 12 and a distal end 15 located away from the support body 12. Each of the projections 13 are spaced away from each other typically by a distance of 260mm between centres horizontally and 125mm between centres vertically.
  • the projections 13 have a lenticular shape.
  • a recessed channel or groove is formed as an indentation or depression in the surface of the projection 13. In this arrangement, the recessed channel 16 extends entirely circumferentially about the projection 13.
  • the spacer device 11 is primarily for use in a cavity wall of a building structure to prevent or at least inhibit water or moisture from penetrating the building.
  • FIG. 2 there is shown a sectional view of the spacer device 11 having the support body 12 and the plurality of projections 13.
  • the recessed channel 16 is spaced towards the distal face 15 of the projection 13.
  • the cavity wall spacer 11 is incorporated in a cavity 17 of a cavity wall 18 of a building structure (again, just a portion of the complete sheet is shown).
  • the cavity wall 18 has an exterior wall 19 and an interior wall 20 and may optionally include a layer 21 of an insulating material on an inner face of the interior wall 20.
  • the insulation layer 21 may be separate from the cavity wall spacer 11, and the cavity wall spacer 11 may retain the separate insulation layer 21 in place against the inner face of the interior wall 20.
  • the exterior and interior walls 19, 20 are constructed from bricks, although they may also be constructed from concrete blocks, hollow clay bricks, timber framing or natural stone.
  • the spacer device 11 is located in the cavity 17 of the cavity wall 18.
  • the support body 12 of the spacer 11 lies against an inner face of the exterior wall 19 with the plurality of projections 13 extending toward the inner face of the interior wall 20.
  • the recessed channels 16 are located towards the distal end of the projection 13 in the region near the inner face of the interior wall and function as a "water bar" to prevent or hinder the penetration of water or moisture into the interior wall 20 of the building. Any water which enters the cavity 17 flows along the outer surface of the projections 13 to the recessed channel 16 whereupon further water penetration into the cavity 17 is prevented.
  • the recessed channel 16 causes water droplets to form and, when a sufficiently sized droplet has formed, it is guided within the conduit formed by the recessed channel around the exterior of the projection 13 to two moisture-release points 17a, 17b which are located on either side of the recessed channel 16 at the lower intersection of the two arcs forming the lenticular cross-section of the projection 13. From here, the water droplet will either drip downwardly from the projections 13 to the ground surface where weep holes (not shown) may be provided in the exterior wall to drain the water from the cavity 17. Alternatively, the water droplet will track back along the external surface of the projection 13 towards the exterior wall 19. Eventually, the water droplet will then gather on the ground surface in the vicinity of the weep holes in the exterior wall 19.
  • the projections 13 have a lenticular shape having upper and lower ridges defined by the region where the converging arcs intersect.
  • the side walls of the projections are steeply angled relative to the axis of the projection 13 which causes the water droplets to travel down the walls to the lower ridge.
  • the laminar support body 12 will typically have dimensions of 1200mm by 450mm and the projections 13 are spaced across a face of the support body 12 and formed into three rows and five columns.
  • a plurality of the spacer devices is typically installed in a cavity wall of a building in a plurality of rows and columns.
  • wall ties (not shown) are located in the cavity 17 at regular spaced intervals.
  • the substantially horizontal spacing between adjacent wall ties is usually about 900mm and the substantially vertical spacing between adjacent wall ties is usually about 450mm.
  • Each spacer device may be connected to another spacer device in the cavity wall using H-shaped connection elements (not shown) having two longitudinal parallel walls joined together at a middle region thereof by an integral longitudinal member so as to define U-shaped channels, each of which can receive a part of the support body of adjacent spacer devices.
  • H-shaped connection elements not shown
  • U-shaped channels each of which can receive a part of the support body of adjacent spacer devices.
  • FIG. 4 there is shown a plurality of spacer devices stacked upon each other. As can be seen, a high packing density can be achieved since the absence of any external protrusions enables the spacer devices to readily slide over each other and stack in close formation.
  • the spacer device 11' is integrally formed by vacuum moulding and has a support body 12' with a plurality of projections 13' extending transversely from the plane of the support body 12'.
  • the support body 12' is a laminar sheet.
  • the support body 12' and the projections 13' of the spacer device 11' are made from a plastics material.
  • the plurality of projections 13' are longitudinal and have a proximal end 14' located adjacent to the support body 12' and a distal end 15' spaced away from the support body.
  • the projections 13' have a generally lenticular shape.
  • a recessed channel 16' is formed in the distal end 15'.
  • the recessed channel 16' extends entirely circumferentially around distal end 15'.
  • the recessed channel 16' functions in a similar way to the arrangement shown in Figures 1 to 3 and acts to divert moisture within the cavity 17 away from the inner wall 20.
  • the laminar support body 12' will typically have dimensions of 1200mm by 450mm and the projections 13' are spaced across a face of the support body 12' and formed into three rows and five columns.
  • the cavity wall spacers 11, 11' both inhibit the transfer of moisture from the external wall to the internal wall. Also, the recessed channel 16, 16' reduces the amount of moisture which drips into the cavity since the moisture is more likely to track back along the surface of the projection. Additionally, a high staking density of the cavity wall spacers 11, 11' can be achieved since there are no external protrusions which would otherwise prevent the exterior of the spacer device 13, 13' from closely mating with the interior of a further cavity wall spacer stacked thereon. Furthermore, by avoiding any external protrusions the risk of damage to the cavity wall spacers 11, 11' is reduced.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Acoustics & Sound (AREA)
  • Building Environments (AREA)

Claims (18)

  1. Espaceur pour murs creux (11 ; 11'), comprenant :
    un corps de support (12 ; 12') ; et
    une pluralité de saillies de séparation d'éléments de bâtiment espacées (13 ; 13') se projetant à la verticale depuis ledit corps de support, lesquelles sont déployables dans une cavité (17) entre deux couches (19, 20) d'un mur (18) pour définir une séparation d'éléments de bâtiment desdites deux couches dudit mur pendant la construction, caractérisé en ce que chaque saillie présente un canal d'inhibition de transfert d'humidité évidé (16 ; 16') s'étendant au moins sur une partie de la circonférence de celle-ci, lequel canal inhibe le transfert d'humidité le long de la longueur de la saillie, ce qui permet d'inhiber le transfert d'humidité entre deux couches d'un mur et en ce que chaque saillie présente une section transversale lenticulaire intégralement définie par deux arcs qui se croisent.
  2. Espaceur pour murs creux selon la revendication 1, dans lequel ledit canal évidé est utilisable pour amener l'humidité à s'écouler d'une première extrémité de ladite saillie vers l'autre extrémité afin de la recueillir en son sein.
  3. Espaceur pour murs creux selon la revendication 2, dans lequel ledit canal évidé est utilisable pour amener ladite humidité recueillie en son sein à être collectée au niveau d'un point d'évacuation d'humidité (17a ; 17b).
  4. Espaceur pour murs creux selon la revendication 3, dans lequel chaque saillie est effilée en direction de son extrémité distale et ledit canal évidé est utilisable pour guider l'humidité collectée au niveau dudit point d'évacuation d'humidité vers l'extrémité proximale de ladite saillie.
  5. Espaceur pour murs creux selon l'une quelconque des revendications précédentes, dans lequel ledit canal évidé est situé entre les extrémités proximale et distale de ladite saillie.
  6. Espaceur pour murs creux selon la revendication 5, dans lequel ledit canal évidé est situé vers ladite extrémité distale de ladite saillie.
  7. Espaceur pour murs creux selon l'une quelconque des revendications précédentes, dans lequel ledit canal évidé est situé dans une face distale de ladite saillie.
  8. Espaceur pour murs creux selon l'une quelconque des revendications précédentes, dans lequel ledit canal évidé s'étend sur toute la circonférence de ladite saillie.
  9. Espaceur pour murs creux selon l'une quelconque des revendications précédentes, dans lequel chaque saillie est creuse.
  10. Espaceur pour murs creux selon l'une quelconque des revendications précédentes, dans lequel ledit corps de support et lesdites saillies sont formés de manière solidaire.
  11. Espaceur pour murs creux selon l'une quelconque des revendications précédentes, dans lequel chaque saillie s'étend transversalement par rapport audit corps de support.
  12. Espaceur pour murs creux selon l'une quelconque des revendications précédentes, dans lequel chaque saillie s'étend depuis une face dudit corps de support.
  13. Espaceur selon l'une quelconque des revendications précédentes, dans lequel le canal est formé autour de l'extérieur de la saillie.
  14. Structure de bâtiment incorporant un ou plusieurs espaceurs pour murs creux selon l'une quelconque des revendications précédentes dans un mur creux de ladite structure de bâtiment.
  15. Structure de bâtiment selon la revendication 14, dans laquelle lesdits espaceurs pour murs creux sont situés à intervalles espacés dans ledit mur creux de ladite structure de bâtiment.
  16. Procédé d'édification d'un bâtiment ayant un mur creux (18) composé de deux couches (19, 20) ou plus, comprenant les étapes consistant à :
    édifier une partie d'une première couche dudit mur creux dudit bâtiment ;
    fixer à ladite partie édifiée de ladite première couche dudit mur creux un espaceur pour murs creux selon l'une quelconque des revendications 1 à 13, et
    édifier au moins une partie d'une autre couche dudit mur creux dudit bâtiment à une position espacée de ladite première couche d'une distance définie par ledit espaceur pour murs creux.
  17. Procédé selon la revendication 16, dans lequel ledit dispositif est orienté dans ledit mur creux dudit bâtiment de sorte que ledit corps de support dudit espaceur pour murs creux appuie contre une face interne d'une couche extérieure dudit mur creux et que ladite pluralité de saillies dudit corps de support s'étendent vers une couche intérieure dudit mur creux dudit bâtiment.
  18. Procédé selon la revendication 17, dans lequel ledit espaceur pour murs creux est orienté de sorte que les extrémités distales de ladite pluralité de saillies viennent en butée d'une face interne de ladite couche intérieure dudit mur creux dudit bâtiment.
EP07253268.2A 2007-08-20 2007-08-20 Espaceur pour murs creux, bâtiment et procédé Active EP2028326B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP07253268.2A EP2028326B1 (fr) 2007-08-20 2007-08-20 Espaceur pour murs creux, bâtiment et procédé
CA2639142A CA2639142C (fr) 2007-08-20 2008-08-15 Entretoise de mur creux, structure de batiment et methode applicable
US12/229,009 US20090056263A1 (en) 2007-08-20 2008-08-18 Cavity wall spacer, building structure and method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP07253268.2A EP2028326B1 (fr) 2007-08-20 2007-08-20 Espaceur pour murs creux, bâtiment et procédé

Publications (2)

Publication Number Publication Date
EP2028326A1 EP2028326A1 (fr) 2009-02-25
EP2028326B1 true EP2028326B1 (fr) 2018-09-26

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Application Number Title Priority Date Filing Date
EP07253268.2A Active EP2028326B1 (fr) 2007-08-20 2007-08-20 Espaceur pour murs creux, bâtiment et procédé

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US (1) US20090056263A1 (fr)
EP (1) EP2028326B1 (fr)
CA (1) CA2639142C (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB201006586D0 (en) * 2010-04-20 2010-06-02 Birkett Brian G A cavity forming device and method of constructing a cavity wall
EP2423398A1 (fr) * 2010-08-23 2012-02-29 insu-fast GmbH Dispositif d'isolation intérieure d'une paroi de composant
GB2488374A (en) * 2011-02-28 2012-08-29 Wizzher Ltd Apparatus and methods for forming void spaces within the envelope of a building
WO2020087103A1 (fr) * 2018-11-01 2020-05-07 Xiao Hung Garnitures d'étanchéité de construction empilables

Citations (2)

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GB456156A (en) * 1935-05-09 1936-11-04 Arthur Edward Bray Improvements in and relating to window sills
US20040131423A1 (en) * 2000-02-10 2004-07-08 Ianniello Peter J. High-flow void-maintaining membrane laminates, grids and methods

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US748634A (en) * 1904-01-05 Metallic formed sheet
US3279973A (en) * 1963-05-20 1966-10-18 Arne Christian Plane expansible corrugations
EP0628678A1 (fr) * 1993-06-08 1994-12-14 Ubbink B.V. Eléments pour planchers surélevés à auto-nivellage
US5383314A (en) * 1993-07-19 1995-01-24 Laticrete International, Inc. Drainage and support mat
US5511346A (en) * 1994-08-24 1996-04-30 The Dow Chemical Company Thermoplastic foam insulation and drainage board and method of using in below-grade applications
DE19730647C2 (de) * 1997-07-17 2000-08-10 Thyssen Stahl Ag Leichtbauplatte aus Metall in Form einer Höckerplatte und Verfahren zu ihrer Herstellung
DE29805599U1 (de) * 1998-03-27 1998-08-13 Kunststoff Formteile Gerhard G Hohlboden
US6691472B2 (en) * 2002-02-15 2004-02-17 Theodore G. Hubert Foundation wall protector
GB0211371D0 (en) 2002-05-17 2002-06-26 Ayers Charles W J Improvements in or relating to a spacer device for a cavity wall
US6802668B2 (en) * 2002-10-16 2004-10-12 Alton F. Parker Subterranean drainage system
US7367165B2 (en) * 2004-04-01 2008-05-06 Michael Hatzinikolas Moisture control strip
EP2298995B1 (fr) * 2007-01-19 2018-04-11 Brock International Base pour système de gazon synthétique

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB456156A (en) * 1935-05-09 1936-11-04 Arthur Edward Bray Improvements in and relating to window sills
US20040131423A1 (en) * 2000-02-10 2004-07-08 Ianniello Peter J. High-flow void-maintaining membrane laminates, grids and methods

Also Published As

Publication number Publication date
CA2639142C (fr) 2015-08-11
EP2028326A1 (fr) 2009-02-25
CA2639142A1 (fr) 2009-02-20
US20090056263A1 (en) 2009-03-05

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