DK202070569A1 - Flashing assembly and associated method - Google Patents
Flashing assembly and associated method Download PDFInfo
- Publication number
- DK202070569A1 DK202070569A1 DKPA202070569A DKPA202070569A DK202070569A1 DK 202070569 A1 DK202070569 A1 DK 202070569A1 DK PA202070569 A DKPA202070569 A DK PA202070569A DK PA202070569 A DKPA202070569 A DK PA202070569A DK 202070569 A1 DK202070569 A1 DK 202070569A1
- Authority
- DK
- Denmark
- Prior art keywords
- flange member
- roof
- flashing assembly
- flange
- covering elements
- Prior art date
Links
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- 230000000149 penetrating effect Effects 0.000 claims abstract description 24
- 229920001971 elastomer Polymers 0.000 claims abstract description 16
- 239000000806 elastomer Substances 0.000 claims abstract description 15
- 239000004033 plastic Substances 0.000 claims abstract description 15
- 229920003023 plastic Polymers 0.000 claims abstract description 15
- 239000004753 textile Substances 0.000 claims abstract description 8
- 239000000463 material Substances 0.000 claims description 44
- 230000001070 adhesive effect Effects 0.000 claims description 12
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- 239000000853 adhesive Substances 0.000 claims description 9
- 229920002943 EPDM rubber Polymers 0.000 claims description 5
- 229920005989 resin Polymers 0.000 claims description 5
- 239000011347 resin Substances 0.000 claims description 5
- 239000000945 filler Substances 0.000 claims description 4
- 239000004677 Nylon Substances 0.000 claims description 3
- 239000002923 metal particle Substances 0.000 claims description 3
- 229920001778 nylon Polymers 0.000 claims description 3
- 244000025254 Cannabis sativa Species 0.000 claims description 2
- 235000012766 Cannabis sativa ssp. sativa var. sativa Nutrition 0.000 claims description 2
- 235000012765 Cannabis sativa ssp. sativa var. spontanea Nutrition 0.000 claims description 2
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 2
- 240000006240 Linum usitatissimum Species 0.000 claims description 2
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- 229920003235 aromatic polyamide Polymers 0.000 claims description 2
- 235000009120 camo Nutrition 0.000 claims description 2
- 239000004917 carbon fiber Substances 0.000 claims description 2
- 235000005607 chanvre indien Nutrition 0.000 claims description 2
- 239000011487 hemp Substances 0.000 claims description 2
- 229920000728 polyester Polymers 0.000 claims description 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims 2
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- 229910052751 metal Inorganic materials 0.000 description 17
- 239000002184 metal Substances 0.000 description 17
- 238000007789 sealing Methods 0.000 description 10
- 239000011888 foil Substances 0.000 description 6
- 230000000284 resting effect Effects 0.000 description 6
- 229910052782 aluminium Inorganic materials 0.000 description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 5
- 235000010210 aluminium Nutrition 0.000 description 5
- 230000009975 flexible effect Effects 0.000 description 4
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- 229920000136 polysorbate Polymers 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 2
- 230000006750 UV protection Effects 0.000 description 2
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- 229920005549 butyl rubber Polymers 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 238000009966 trimming Methods 0.000 description 2
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- 244000299507 Gossypium hirsutum Species 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 229920000027 Valéron Polymers 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
- E04D13/00—Special arrangements or devices in connection with roof coverings; Protection against birds; Roof drainage ; Sky-lights
- E04D13/14—Junctions of roof sheathings to chimneys or other parts extending above the roof
- E04D13/147—Junctions of roof sheathings to chimneys or other parts extending above the roof specially adapted for inclined roofs
- E04D13/1473—Junctions of roof sheathings to chimneys or other parts extending above the roof specially adapted for inclined roofs specially adapted to the cross-section of the parts extending above the roof
- E04D13/1475—Junctions of roof sheathings to chimneys or other parts extending above the roof specially adapted for inclined roofs specially adapted to the cross-section of the parts extending above the roof wherein the parts extending above the roof have a generally rectangular cross-section
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
- E04D13/00—Special arrangements or devices in connection with roof coverings; Protection against birds; Roof drainage ; Sky-lights
- E04D13/14—Junctions of roof sheathings to chimneys or other parts extending above the roof
- E04D13/147—Junctions of roof sheathings to chimneys or other parts extending above the roof specially adapted for inclined roofs
- E04D13/1473—Junctions of roof sheathings to chimneys or other parts extending above the roof specially adapted for inclined roofs specially adapted to the cross-section of the parts extending above the roof
- E04D13/1476—Junctions of roof sheathings to chimneys or other parts extending above the roof specially adapted for inclined roofs specially adapted to the cross-section of the parts extending above the roof wherein the parts extending above the roof have a generally circular cross-section
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B7/00—Roofs; Roof construction with regard to insulation
- E04B7/18—Special structures in or on roofs, e.g. dormer windows
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
- E04D13/00—Special arrangements or devices in connection with roof coverings; Protection against birds; Roof drainage ; Sky-lights
- E04D13/03—Sky-lights; Domes; Ventilating sky-lights
- E04D13/035—Sky-lights; Domes; Ventilating sky-lights characterised by having movable parts
- E04D13/0351—Sky-lights; Domes; Ventilating sky-lights characterised by having movable parts the parts pivoting about a fixed axis
- E04D13/0354—Sky-lights; Domes; Ventilating sky-lights characterised by having movable parts the parts pivoting about a fixed axis the parts being flat
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Roof Covering Using Slabs Or Stiff Sheets (AREA)
Abstract
The invention relates to a flashing assembly (60) for a roof penetrating structure, a method of mounting a flashing assembly and a roof structure (19), The flashing assembly (60) comprises a skirt member (20) configured for at least partly covering roof covering elements (51) facing the bottom of the roof penetrating structure (19), a flange member (40) positioned in extension of the skirt member (20) where the flange member (40) has an inner surface, adapted to face in an interior direction towards an interior of the building and is adapted to lay flat and follow the surface of the roof covering elements (51), the flange member (40) being formable for substantially permanent deformation and comprising an elastomer being plastic and/or a textile.
Description
DK 2020 70569 A1 1 The present invention relates to a flashing assembly according to claim 1. It further relates to a method of mounting such a flashing assembly and a roof structure comprising such a flashing assembly.
Skirt flashing elements, which typically comprise a skirt member adapted for resting on the outer surface of the roofing material and a plate or rail member to be attached to the roof penetrating structure, are used for seal- ing joints between building structures penetrating a roof surface, for example a joint between the frame of a roof window and the surrounding roofing mate- rial, particular at the lower horizontal member of the main frame of the roof window.
The skirt member is important with regards to securing a well-fitting, stable and secure sealing of the joint between a roof penetrating structure and a roof surface, particularly when using an undulated roofing material such as tiles.
The skirt member shall ideally provide for an easy mounting proce- dure, which ensures that the skirt member is firmly and closely mounted onto the roof surface and stays in this position for the entire lifetime of the flashing.
In order to achieve this, the skirt member is made of a material, which is easy to bend, preferably by hand, and which has a relatively high weight and a low elasticity.
Skirt flashing elements have traditionally been made from lead plates with a thickness of approximately 1 mm.
Lead as a flashing material has a number of advantages as it is very easy to deform with only a very limited elasticity, i.e. the lead plate substantially stays in the form into which it is ini- tially bend without any elastic bouncing back.
This inherent feature of lead is of great advantage when a lead-skirt is shaped directly onto for example an undulated roof surface, since such skirts cannot be bent in excess in order to compensate for possible elastic re-bouncing.
Although lead is virtually non- elastic, there may be a minimal re-bouncing, but as lead is a very heavy ma- terial, gravity will keep the lead-skirt in close contact with the roof surface.
The high weight also prevents the skirt from being lifted and bent backwards by heavy winds.
Lead, however, is environmentally harmful and has therefore been forbidden for use in construction work in many countries.
Different kinds of skirt flashing elements having a sandwich structure
DK 2020 70569 A1 2 with a stress damping and stabilizing layer of ductile material covered by a foil sheeting has been suggested as alternatives to lead. The core layer has typi- cally been made out of a polymeric material or bitumen product, and the foil has typically been a thin metal foil, preferably aluminium foil.
For use on roof surfaces in the form of undulated tiles with very deep troughs these sandwich structures are typically wave-corrugated or pleated giving them a surplus of material, which allows them to stretch so that a good fit between the flashing and roofing may be obtained.
An example of a prior art document showing a wave corrugated flashing is EP2749707.
Practice, however, has shown that wave-corrugated or pleated skirt flashing elements can result in the undulated roof covering resting on the flanges of wave-corrugated skirt member, being lifted, because the corrugat- ed surface makes it impossible for the undulated roofing elements to rest flat on the undulated roofing elements, which it overlaps. It is considered a prob- lem with roof windows having a small width, where the width of the two flang- es together is of the same or almost of the same width as the skirt member. Not only does the overall appearance of the flashing assembly suffer with such a dominant configuration of the flanges but it also becomes hard to fit the skirt and flanges to highly undulated roof coverings. The object of the in- vention is therefore to make an improved flashing without the above- mentioned drawbacks.
This is achieved by a flange member that is adapted to lay flat and follow the surface of the roof covering element, the flange member being formable for substantially permanent deformation, and comprising an elasto- mer being plastic and/or a textile.
The deformed flange member may be kept in place by the roof cover- ing elements resting on top of it. For example, if the flange member is light- weight, such as a textile or does not comprise metal or a minimal amount of metal.
What is meant by plastic is that the material is able to be deformed without rupture by the action of a force and remain deformed after the force is
DK 2020 70569 A1 3 removed. It may have plastic properties similar to modelling clay or similar materials with ductile or like properties. The flange member may be plastic.
It may alternatively or additionally be viscoelastic such that a faster deformation results in a higher degree of elasticity.
The flange member may be adapted to lay flat and follow the surface of the roof covering element(s) by being elastic, but still maintain its shape after being modelled or by having surplus material. For example, the flange member may be flared such the flange member is progressively wider to- wards the bottom and/or being pleated and/or stretchable. The flange mem- ber may be pleated, for example the flange member may be provided with box pleats, accordion pleats, inverted plats or knife pleats.
The flashing assembly is particularly suitable for undulated roof cov- ering elements, such as tiles, but may also be used for flat roof covering ele- ments.
Textile may include anything made from fibrous materials. The term includes fabrics made of adhered fibers like felt, items made of relatively un- modified plant materials like materials used for baskets and mats, fabrics made of spun yarns such as knitted and woven cloth, and items made of syn- thetic linear elements such as for nylon window screens. The textile may be woven, non-woven, spun or molded.
The flange member has an inner surface, adapted to face in an inte- rior direction towards an interior of the building.
The inner surface of the flange member may have adhesive proper- ties to provide at least a temporary attachment to the roof covering elements until roof covering elements have been positioned on top of the flange mem- ber, to provide an easier installation. The flange member may be repositiona- ble even with adhesive properties. The inner surface may be provided with a release liner to protect an adhesive inner surface.
According to an embodiment, the textile is impregnated and/or lami- nated and/or vulcanized. The purpose of this is to repel water.
The flange member and/or the skirt member may be made without any metal or a minimum amount of metal. For example, the flange member
DK 2020 70569 A1 4 and/or the skirt member may comprise less than 15% metal by volume, less than 10% metal by volume, less than 8% metal by volume or less than 5 % metal by volume. The minimum amount of metal could be a thin metal foil or metal particles in the flange and/or skirt member.
By using a flange member that has both plastic and elastic proper- ties, it is possible to stretch the flange member, so it adapts to the shape of the roof covering elements, e.g. such that conforms to the shape of the roof covering elements and stays in place after being mounted. It is thus possible to position the tiles or roofing material closely to the flashing and a closer fit is provided, in particular in low roof inclinations. When the tile or roofing material is brought closer together a possible corrugated part of the skirt member will also be pushed further down towards the roof. What is meant by corrugated, is that surplus material is available in the form of corrugations or pleats, so the material can reach down into the troughs of the roof covering elements.
The skirt member may be plane as well, without corrugations. It may also be plastic and/or elastic.
The flange member may comprise a main layer comprising an elas- tomer being plastic.
The flange member may comprise a second layer comprising an elastomer being elastic and preferably adhesive.
The flange member may comprise sailcloth, where the material(s) for the sailcloth is preferably selected from a group consisting of flax, hemp, cot- ton, nylon, polyester, aramids, and carbon fibers The flashing assembly may comprise a sealing member attachable to the bottom of the roof penetrating structure and the skirt member.
The sealing member may be in the form of a rail or a plate material, usually metal, such as aluminum, adapted to cover a part of the space be- tween the roof penetrating structure and the roof covering elements.
The flashing assembly may comprise a skirt member of a corrugated sheet material having a first edge attached to the sealing member in the mounted condition, and a fourth edge, opposite the first edge, and a second and a third edge connecting the first edge with the fourth edge, preferably the
DK 2020 70569 A1 second and the third edges are substantially perpendicularly to the first edge. The skirt member may comprise metal, preferably aluminium.
The flange member may comprise metal particles, such as iron ox- ide.
5 The main layer may comprise mainly short chained elastomer. The second layer may comprise mainly long chained elastomer.
In an embodiment at least 90%, more preferably at least 95% of the volume of the flange member may consist of an elastomer. The elastomer may also be synthetic. The surface of the main layer facing the exterior may be covered by a thin foil, e.g. less than 0.5 mm thick, or provided with UV pro- tection, e.g. a form of paint, or another exposure protection.
The elasticity of the second layer contributes to distributing the forces in the main layer when the flange member is being molded into place clinging to the roof covering elements.
The elasticity also depends on the speed with which you pull the flange member. The faster you pull and/or provide an impulse to the material, the more elastic it will feel. If you slowly press on the material it will leave a mark and be permanently deformed.
The second layer or bottom layer may be adhesive.
The adhesiveness of the second layer contributes to holding the flange member in place during mounting, before a roof covering element may be placed on top of it, and subsequently holds it in place.
The flange member is preferably flexible or pliable or formable.
What is meant by being flexible is that the flange member is able to bend, preferably up to 150 degrees, more preferably up to 180 degrees, with- out breaking.
The flashing assembly is either delivered on site in one piece or is assembled on site. For example, the skirt member may be attached to the flange member or they may be attached to each other on site.
The inclination of the roof is preferably between 15 degrees and 70 degrees.
The roof covering elements may be tiles or other undulated roof cov-
DK 2020 70569 A1 6 ering elements.
The top, bottom and side members may have an interior side for fac- ing in an interior direction towards an interior of the building in a mounted condition and an exterior side for facing in an exterior direction opposite the interior direction in the mounted condition.
The skirt member may be used for covering the remaining space be- tween the roof penetrating structure and the roof covering elements and part of the roof covering elements facing the roof penetrating structure, at the bot- tom of the roof penetrating structure.
The skirt member may be a laminated sheet material comprising a layer of aluminum, cobber or zinc or alloys thereof, and a polymer layer or bitumen layer. It may be coated or include fillers and/or adhesives. It may also be made of the same materials as the flange member.
A second and/or third edge of the skirt member may be positioned in continuation of a length of the first and/or second side member of the roof penetrating structure, when mounted. The second and/or third edge of the skirt member may be positioned in continuation of the edge of the roof cover- ing elements facing the first or the second side of the roof penetrating struc- ture.
The flange member is preferably free from metal. It may include fill- ers such as chalk.
The flange member may have a break elongation of more than 250%, preferably more than 300%. When pulling the flange member over the roof covering elements, some areas of the flange member will be more ex- posed to being pulled than others. The break elongation makes it possible to stretch the material were needed, so the flange member can be moulded ac- cording to the roof covering elements.
The flange member may be around 20-30 cm wide and 20 — 30 cm long. It is preferably rectangular but may be semi-circular.
The main layer or flange member may comprise material selected from a group consisting of Ethylene Propylene Diene Monomer (EPDM) and butyl and a second layer preferably comprising butyl and/or resin. The flange
DK 2020 70569 A1 7 member may comprise a rubber suitable for the purpose when it comes to its plastic and elastic properties. The butyl in the main layer is preferably sub- stantially made from short chained butyl. The butyl of the second layer is preferably substantially made from long changed butyl or another long- chained rubber material, which contributes to the elasticity. The resin, or other tacky material, contributes to adhering the flange member to the roof covering elements. The second layer or bottom layer facing towards the interior of the building is preferably covered by a release liner, such that it is easier to han- dle the flange member during mounting.
The flange member may be configured to be positioned at least partly between the roof covering elements. A part of it may extend from between the roof covering elements on the outside of the roof.
The flange member may have a thickness between 1.5-4 mm, pref- erably between 1.5-3 mm in a pre-mounted, non-stretched, condition. When the flange member is mounted it may be formed or stretched such that is con- forms to the shape of the roof covering elements. When it is mounted, the thickness may be reduced to between 0.7 and 1 mm as the material is stretched. Because the flange member has a limited thickness, the roof cov- ering elements is able to be positioned close to each other, as opposed to a corrugated or thicker material. The flange member may also be 1-2 mm thick in the pre-mounted, non-stretched, condition.
In an embodiment the main layer has preferably a thickness between
1.2 — 1.7 mm, more preferably around 1.5 mm in the pre-mounted, non- stretched, condition. The second layer has preferably a thickness between
0.3 —= 0.7 mm, preferably around 0.5 mm in the pre-mounted, non-stretched, condition.
In an embodiment the flange member and the skirt member consti- tutes one piece or at least share a layer of material. They may be made from the same material as described for either the flange member or the skirt member in this application.
The flange member and the skirt member may be attached to each other in the mounted condition. They may be disconnected from each other
DK 2020 70569 A1 8 before being mounted.
The flange member and the skirt member may be attached to each other by means of a connection means such as a snap fitting and/or an adhe- sive or welded together. It may also be laminated together.
The flange member may be provided with an attachment flange adapted to engage with gripping means, for example formed like an omega shape, on the skirt member.
The flange member or main layer may comprise a filler, preferably chalk, which contributes to the materials plasticity.
The flange member may have a bottom edge extending across the inclination direction, wherein the bottom edge may be substantially in line with the roof covering element resting upon the flange member in the mounted position. Thereby the flange member becomes almost invisible in the mount- ed position, such that visually the width of the skirt member and flange mem- ber corresponds to the width of the window. In order to have a bottom edge of the flange member being in line with the overlaying roof covering element, the flange member is preferably adapted such that the piece of flange member that extends out between the roof covering elements is cut off after the roof covering elements has been mounted.
Using a flashing assembly with a skirt and flange member of the above-mentioned configuration, may also allow the installer to make a trim- ming of the flange member. For instance, if a very overall slim design look of the roof window and the flashing assembly all together is wanted, it can be done by trimming of the flange member by for instance cutting away any ex- cess material coming out under the overlaying roof covering elements. In this way, looking at the roof window, the flashing assembly and the roof covering all in their mounted positions, you would get the impression that the skirt so to speak just makes a continuation of the roof penetrating structure, e.g. the roof window and leaving the two flange members invisible underneath the roof covering elements. The flange member may be adapted to be cut across the inclination direction when in the mounted position, with pocket knife or similar tool. For example, when there is little or no metal present and the flange
DK 2020 70569 A1 9 member is formable, such as pliable, and relatively thin, for example less than 3 mm thick, the material is easy to cut with a handtool.
According to a second aspect a method of mounting a flashing as- sembly is disclosed. The method comprises the steps of mounting the flash- ing assembly in the roof, mounting the roof covering elements, such that the at least one flange member is at least partly covered by the roof covering el- ements and removing a part of the flange member that extends out from be- tween the roof covering elements, thereby aligning a bottom edge of the flange member with a bottom edge of the roof covering element positioned on top of the flange member. The removal of the part of the flange member that extends out from between the roof covering elements is a lot easier, when metal is not forming part of the flange member but instead is being main made from an elastomer or textile. The person mounting the flashing assem- bly can easily cut of surplus material, that does not contribute to sealing the roof. Furthermore, a more harmonious look of the roof is obtained.
The method may further comprise the step of attaching a sealing member to the bottom of the roof penetrating structure.
According to a third aspect a roof structure is disclosed, the roof structure comprising roof covering elements and a flashing assembly accord- ing to the first aspect.
In the roof structure the flange member of the flashing assembly may be positioned between the roof covering elements and a bottom edge of the flange member may be substantially aligned with a bottom edge of the roof covering elements covering the flange member. Any element mentioned above in relation to the flashing assembly and/or method may be included in the roof structure.
According to an embodiment a flashing assembly is disclosed for use for a roof penetrating structure, preferably a window, in an inclined roof of a building, the inclined roof having an inclination direction and having roof cov- ering elements, the roof penetrating structure comprising a top member and a bottom member extending across the inclination direction, and a first side member and a second side member connecting the top member with the bot-
DK 2020 70569 A1 10 tom member extending in the inclination direction, the flashing assembly comprising: - a sealing member attachable to the bottom of the roof penetrating structure, - a skirt member of a corrugated sheet material having a first edge at- tached to the sealing member in the mounted condition, and a fourth edge, opposite the first edge, and a second and a third edge connecting the first edge with the fourth edge, preferably the second and the third edges are sub- stantially perpendicularly to the first edge, the skirt member is configured for at least partly covering the roof covering elements facing the bottom of the roof penetrating structure, the skirt member comprising metal, preferably alu- minium, - a flange member attached or configured to be attached to the skirt member at the second and/or third edge, the second and/or third edge being configured to be positioned at the first and the second side of the roof pene- trating structure respectively, characterized in that the flange member is flexi- ble and comprises a main layer comprising an elastomer being plastic and a second layer comprising an elastomer being adhesive and elastic.
The invention will now be explained in closer detail with reference to embodiments shown in the drawings, in which Fig. 1 shows an embodiment of a flashing assembly in a perspective view, Fig. 2 shows an embodiment of a flashing assembly in a perspective view in a mounted condition, Fig. 3 shows another embodiment of a flashing assembly in a perspec- tive view in a mounted condition, Fig. 4 shows a cross section of an embodiment of the flange member, Fig 5 shows an embodiment of a snap fitting between the flange mem- ber and the skirt member, Fig. 6 shows another embodiment of a flashing assembly in a perspec- tive view,
DK 2020 70569 A1 11 Fig. 7 shows an embodiment of the flashing assembly in a perspective view, corresponding to the embodiment in fig. 3, however with more details and Fig. 8 shows another embodiment of a flashing assembly in a perspec- tive view in a mounted condition.
In the embodiment shown in Fig. 1, only a half section of the flashing assembly 60 is shown, and a corresponding mirror inverted image may be positioned in extension of the skirt member and the rail member. The flashing assembly 60 comprises a sealing member in the form of a rail element 10 and a skirt member 20. The rail element 10 is attached to the skirt member 20 along a first edge 31 thereof and serves as a connecting element between the skirt member 20 and, for example, the frame of a roof window (not shown) installed in an inclined roof. A flashing member 15 is attached to a flange member 40 and a number of sub-elements 12, 13, 14 intended for being con- nected to the window and/or roof in a manner known per se.
The skirt member 20 is corrugated to provide a surplus of material in a direction along the skirts first edge 31 and fourth edge 34. In this embodiment the skirt member 20 is laminated. The skirt member 20 comprises first layer made from sheet aluminium with a thickness of 0,15 mm, which has been lacquered, which layer faces the exterior. The second cover layer is a cross- laminated foil of a polyolefin, preferable polyethylene, such as the one sold under the trademark Valeron® and with a thickness of 0,075 mm. The third cover layer is made from as polymer, such as polypropylene or polyethylene, or silicone coated paper. Other thicknesses may be used as well.
The skirt member 20 comprises a second edge 32 and a third edge (not shown) connecting the first edge 31 and fourth edge 34. A flange mem- ber 40 is attached both at the second edge 32 and the third edge (not shown) by a snap fitting. The skirt member 20 and the flange member 40 may be in- tegrally formed. The flange member 40 is flexible and comprises mainly an elastomer. The flange member is abutting both the skirt member 20 and flash- ing member 15. The flange member 40 comprises a main layer 41 comprising
DK 2020 70569 A1 12 butyl being plastic in its ability to be modelled according to the shape of the roof, and a second layer 42 comprising a butyl and resin, however with the abilities of being adhesive and elastic. Fig. 2 shows the flashing assembly in the mounted condition. Here the roof penetrating structure 19 in the form of a window is mounted in the roof
50. The window comprises a first 16 and a second side member 18, connect- ed by a bottom 17 and a top member (not shown). The roof 50 is covered by undulated roof covering elements 51 in the form of tiles. The flange member 40 is easily formed according to the shape of the tile, and the tile resting above the flange member 40 is brought close to the tile the flange member rests upon. The flange member may be stretched so that it can reach over the undulated roof covering elements 51. The flange member is not corrugated but is a flat piece of material. A close-fitting flashing assembly is thereby pro- vided.
Fig. 3 shows another embodiment of the flashing assembly in the mounted condition. In addition to the features mention under fig. 2, the flange member 40 has been cut off after being mounted, such that the flange mem- ber substantially does not extend out from between the roofing elements 51, but instead is in line with the bottom edge of the roof covering element 51 resting upon the flange member 40. The flange member 40 has a bottom edge 45 extending across the inclination direction ID, perpendicularly to the second edge 32 of the skirt member. That way the flange member is substan- tially invisible in the mounted position.
Fig. 4 shows an embodiment of a cross section of the flange member
40. The main layer 41 makes up about 90% of the volume of the flange mem- ber. The main layer 41 is in this embodiment is butyl rubber. The main layer 41 may be made out of EPDM instead or another rubber with similar plastic properties. The top layer 44 facing the exterior is a layer of UV protection. This could be dispensed with, in particular in cases were the bottom part of the flange member is cut off, so that it is in line with the roof covering element. A second layer 42 comprising butyl rubber and resin is positioned below the
DK 2020 70569 A1 13 main layer 41. This layer is elastic and has adhesive properties. The third lay- er 43 is a release liner, so the flange member 40 is easier to work with during mounting, as the second layer 42 is somewhat sticky. The third layer 43 is removed before mounting of the flange member 40. The third layer 43 could be dispensed with as well.
Fig. 5 shows a cross section of a snap fitting 60 between the flange member 40 and the skirt member 20. The snap fitting comprises a protrusion 62 on the flange member 40, preferably extending along the edge of the flange member 40 facing the skirt member, and an omega shaped engage- ment means 61, enclosing the protrusion 40. The layers of the flange member and the skirt member is not shown.
Fig. 6 shows another embodiment of the flashing assembly in a semi mounted condition. Here it can clearly be seen how the flashing member 40 are modelled according to the roof covering elements and stays in place after it has been stretched into position. The plastic properties of the flange mem- ber help to keep it in place.
Fig. 7 shows an embodiment of the flashing assembly in a mounted condition. Here it can in particularly be seen how the whole window appears, when the bottom edges 45 of the flange members is in line with the overlaying roof covering elements 51.
Fig. 8 shows an embodiment of the flashing assembly in a mounted condition. Here the skirt member 20 and the flange member 40 are in one piece and comprising a layer of the same material. They may be made of the same material throughout. The flange member 40 has been cut such that the bottom edge of the flange member 40 is substantially aligned with the bottom edge 45 of the roof covering element 51 positioned on top of the flange mem- ber 40.
Similar reference numbers are used for similar features throughout the application. Features from the first aspect may be combined with features from the second aspect and third aspect and vice versa and features from the
DK 2020 70569 A1 14 different embodiments may be combined freely.
Features from the independ- ent claims may be dispensed with.
Claims (17)
1. Flashing assembly (60) for use for a roof penetrating structure (19), preferably a window, in an inclined roof (50) of a building, the inclined roof (50) having an inclination direction and having roof covering elements (51), the roof penetrating structure (19) comprising a top member and a bot- tom member (17) extending across the inclination direction, and a first side member (16) and a second side member (18) connecting the top member with the bottom member (17) extending in the inclination direction, the flash- ing assembly (60) comprising: - a skirt member (20) configured for at least partly covering the roof covering elements (51) facing the bottom of the roof penetrating structure (19), the skirt member (20) has a first edge (31) and a fourth edge (34) ex- tending across the inclination direction, the fourth edge (34) being opposite the first edge (31), - a flange member (40) positioned in extension of the skirt member (20) and the first (31) and the fourth edge (34), such that the flange member (40) is positioned at the first (16) and/or the second (18) side member of the roof penetrating structure (19) respectively, - the flange member (40) has an inner surface, adapted to face in an interior direction towards an interior of the building, characterized in that the flange member (40) is adapted to lay flat and follow the surface of the roof covering elements (51), the flange member (40) being formable for substan- tially permanent deformation and comprising an elastomer being plastic and/or a textile.
2. Flashing assembly (60) according to claim 1, wherein the flange member (40) is stretchable and/or pleated and/or progressively wider towards the bottom.
3. Flashing assembly (60) according to any one of the preceding claims, wherein the inner surface is adhesive.
4. Flashing assembly (60) according to any one of the preceding claims, wherein the flange member (40) comprises a main layer (41) compris- ing an elastomer being plastic and a second layer comprising an elastomer
DK 2020 70569 A1 16 being elastic.
5. Flashing assembly (60) according to any one of the preceding claims, wherein the flange member (40) comprises sailcloth, where the mate- rial(s) for the sailcloth is preferably selected from a group consisting of flax, hemp, cotton, nylon, polyester, aramids, and carbon fibers.
6. Flashing assembly (60) according to any one of the preceding claims, wherein the flange member (40) is laminated and/or impregnated and/or vulcanized.
7. Flashing assembly (60) according to any one of the preceding claims, wherein the flange member (40) comprises metal particles, such as iron oxide.
8. Flashing assembly (60) according to any one of the preceding claims, wherein the flange member (40) has a break elongation of more than 250%, preferably more than 300%.
9. Flashing assembly (60) according to claim 4, wherein the flange member (40) comprises material selected from a group consisting of Ethylene Propylene Diene Monomer (EPDM) and butyl and the second layer preferably comprising butyl and/or resin.
10. Flashing assembly (60) according to any one of the preceding claims, wherein the flange member (40) is configured to be positioned at least partly between the roof covering elements (51).
11. Flashing assembly (60) according to any one of the preceding claims, wherein the flange member (40) has a thickness between 1.5-4 mm, preferably between 1.5-3 mm in a pre-mounted condition.
12. Flashing assembly according to any one of the preceding claims, wherein the flange member (40) and the skirt member (20) consti- tutes one piece or at least share a layer of material.
13. Flashing assembly (60) according to any one of claims 1-11, wherein the flange member (40) and the skirt member (20) is at- tached to each other by means of a connection means such as a snap fitting
DK 2020 70569 A1 17 (60) and/or an adhesive.
14. Flashing assembly (60) according to any one of the preceding claims, wherein the flange member (40) comprises a filler, preferably chalk.
15. Method of mounting a flashing assembly (60) comprising the steps of: - mounting a flashing assembly (60) according to any one of claims 1-14 in the roof, - mounting the roof covering elements (51), such that the at least one flange member (40) is at least partly covered by the roof covering elements (51), - removing a part of the flange member (40) that extends out from between the roof covering elements (51) thereby aligning a bottom edge (45) of the flange member (40) with a bottom edge of the roof covering element positioned on top of the flange member (40).
16. Roof structure comprising roof covering elements (51) and a flashing assembly (60) according to any one of claims 1- 14.
17. Roof structure according to claim 15, where the flange member (40) of the flashing assembly (60) is posi- tioned between the roof covering elements (51) and wherein a bottom edge of the flange member is substantially aligned with a bottom edge of the roof covering elements (51) covering the flange member (40).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DKPA202070569A DK181067B1 (en) | 2020-09-03 | 2020-09-03 | Flashing assembly and associated method |
| EP21194497.0A EP3964665A1 (en) | 2020-09-03 | 2021-09-02 | Flashing assembly and associated method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DKPA202070569A DK181067B1 (en) | 2020-09-03 | 2020-09-03 | Flashing assembly and associated method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DK202070569A1 true DK202070569A1 (en) | 2022-03-04 |
| DK181067B1 DK181067B1 (en) | 2022-11-07 |
Family
ID=77626978
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DKPA202070569A DK181067B1 (en) | 2020-09-03 | 2020-09-03 | Flashing assembly and associated method |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP3964665A1 (en) |
| DK (1) | DK181067B1 (en) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2554341B1 (en) * | 1975-12-03 | 1977-06-08 | Braas & Co Gmbh | Water tight jointing strip for roof tiles - is formed of flexible synthetic material with circular section to fit range of tile sizes |
| DE3904174A1 (en) * | 1989-02-11 | 1990-08-16 | Handel & Mack Gmbh & Co Kg | Roof penetration surround |
| AU782847B2 (en) * | 1999-09-30 | 2005-09-01 | Andrew Leo Haynes | Roof flashing |
| DK1259684T3 (en) * | 2000-02-29 | 2004-03-01 | Vkr Holding As | Laminated plate-shaped roofing material |
| EP2749708B1 (en) | 2012-12-27 | 2017-03-29 | VKR Holding A/S | A skirt element for use in a flashing for a roof penetrating structure and a method for installation of a skirt element at a roof penetrating structure |
| PL125780U1 (en) * | 2016-11-21 | 2018-06-04 | Fakro Pp Spółka Z Ograniczoną Odpowiedzialnością | Sealing flange with two-sided tape |
| NL2022206B1 (en) * | 2018-12-13 | 2020-07-03 | Redeahold Apeldoorn B V | Synthetic flashing material |
-
2020
- 2020-09-03 DK DKPA202070569A patent/DK181067B1/en active IP Right Grant
-
2021
- 2021-09-02 EP EP21194497.0A patent/EP3964665A1/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| EP3964665A1 (en) | 2022-03-09 |
| DK181067B1 (en) | 2022-11-07 |
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Effective date: 20221107 |