WO2007026108A1 - Membrane and building construction - Google Patents
Membrane and building construction Download PDFInfo
- Publication number
- WO2007026108A1 WO2007026108A1 PCT/GB2005/003364 GB2005003364W WO2007026108A1 WO 2007026108 A1 WO2007026108 A1 WO 2007026108A1 GB 2005003364 W GB2005003364 W GB 2005003364W WO 2007026108 A1 WO2007026108 A1 WO 2007026108A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- membrane
- sheet
- rafters
- adjacent
- edges
- Prior art date
Links
- 239000012528 membrane Substances 0.000 title claims abstract description 69
- 238000009435 building construction Methods 0.000 title claims abstract description 18
- 239000000463 material Substances 0.000 claims abstract description 28
- 238000009413 insulation Methods 0.000 claims abstract description 24
- 238000013022 venting Methods 0.000 claims abstract description 7
- 239000011248 coating agent Substances 0.000 claims abstract description 5
- 238000000576 coating method Methods 0.000 claims abstract description 5
- 230000003647 oxidation Effects 0.000 claims abstract description 4
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 4
- 239000004033 plastic Substances 0.000 claims description 8
- 229920003023 plastic Polymers 0.000 claims description 8
- 239000005030 aluminium foil Substances 0.000 claims description 5
- 238000009434 installation Methods 0.000 claims description 4
- 238000010276 construction Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 claims description 2
- 238000009414 blockwork Methods 0.000 claims description 2
- 238000005253 cladding Methods 0.000 claims description 2
- 239000011140 metalized polyester Substances 0.000 claims description 2
- 239000010959 steel Substances 0.000 claims description 2
- 230000002787 reinforcement Effects 0.000 claims 3
- 239000004753 textile Substances 0.000 claims 1
- 230000004888 barrier function Effects 0.000 description 2
- 230000035508 accumulation Effects 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 239000011505 plaster Substances 0.000 description 1
- 239000011120 plywood Substances 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
- B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
- B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
- B32B3/30—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by a layer formed with recesses or projections, e.g. hollows, grooves, protuberances, ribs
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/04—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B15/08—Layered products comprising a layer of metal comprising metal as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/20—Layered products comprising a layer of metal comprising aluminium or copper
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
- B32B5/022—Non-woven fabric
-
- 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
- E04B1/78—Heat insulating elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2305/00—Condition, form or state of the layers or laminate
- B32B2305/08—Reinforcements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2311/00—Metals, their alloys or their compounds
- B32B2311/24—Aluminium
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2367/00—Polyesters, e.g. PET, i.e. polyethylene terephthalate
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2419/00—Buildings or parts thereof
- B32B2419/06—Roofs, roof membranes
-
- 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
- E04B1/625—Sheets or foils allowing passage of water vapor but impervious to liquid water; house wraps
-
- 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
- E04B2001/7691—Heat reflecting layers or coatings
Definitions
- This invention relates to a membrane for use in building construction, and to a building construction incorporating same.
- membrane sheets are provided in two layers, being aluminium foil bonded to a sheet of synthetic plastics material provided with an array of air pockets or bubbles, with the installation, as taught in GB 2367839, involving the overlapping of adjacent edges of adjacent sheets to provide a non-sealed, open, breathable lap joint.
- This membrane has a thickness of approximately 4mm and consequently a single, overlapped joint has a thickness of at least 8mm. Furthermore, multiple overlaps are sometimes effected, resulting in 12mm or 16mm thickness, which on occasion is difficult to accommodate within the space provided.
- a basic object of the invention is the provision of an improved thermal insulation/breather/venting membrane and building construction.
- a thermal insulation/breather/venting membrane for use in building construction comprising: (i) a sheet of reflective material having an outer surface and an inner surface; (ii) a coating applied to the outer surface of the reflective material to prevent, or restrict, oxidation; and
- the membrane in accordance with the first aspect like that of GB 2367839, provides increased breathability, whilst retaining the characteristics of being waterproof, being of increased U-value without increased wall thickness, being fire retardant, being CFC/HCFC free, and being certified for building regulations, and can be produced in thicknesses less than 4mm, to minimise thickness accumulations at overlaps.
- a building construction particularly for housing, comprising: (i) an outer skin e.g. of brickwork, blockwork, close boarding, tiles, or cladding material;
- an inner skin e.g. of timber or steel frame; (iii) a cavity between (i) and (ii); and (iv) sheets of membrane in accordance with the first aspect located in the cavity and secured to the inner skin such that at least adjacent horizontal edges of adjacent sheets of membrane are overlapped, with lower edges of an upper sheet overlapping upper edges of lower sheets to provide a non-sealed, open, breathable lap joint.
- the reflective material is aluminium foil.
- the reflective material is a metallised polyester.
- the air channels extend vertically. In another air channel embodiment, the air channels extend horizontally. In the air channels embodiment, the channels are fully exposed to atmosphere at edges of the membrane.
- the air channels project as ridges or ribs, away from the inner, planar layer of the synthetic plastics material, so that in use, they may be engaged with the inner skin to space the membrane from the inner skin.
- a third aspect of the invention relates to the use of a membrane in accordance with the first aspect as a thermal insulation/breather/venting membrane in a cavity between inner and outer skins of a building, with at least one unrestricted flow path for air and/or water vapour around overlapped edges of adjacent membranes.
- Figure 1 is an exploded plan view of a membrane in accordance with the first aspect of the invention
- Figure 2 is a plan view of the membrane of Figure 1 installed in a cavity between inner and outer wall skins of a building construction in accordance with the second aspect of the invention
- Figure 3 is a view (not to scale) in the direction of arrow A of Figure 2, and Figures 4A, 4B and 4C illustrate three alternative installations of the membrane of Figure 1 in a roof of a building.
- a membrane 1 in accordance with the first aspect of the invention comprises a sheet of aluminium foil 2 having an outer surface 3 and an inner surface 4. To the outer surface 3 is applied a coating 5 to prevent, or restrict, oxidation of that surface.
- a sheet 6 of synthetic plastics material comprises an inner, planar layer 7 bonded to an outer layer 8, and the sheet 6 is bonded by its inner layer 7 to the inner surface 4 of the aluminium foil 2.
- the outer layer 8 is non-planar, being deformed to define a plurality of elongated air channels 9 in the form of corrugations, with peaks, ridges, or ribs 10 etc projecting away from the inner planar layer 7, and with troughs 11 by which the layer 8 is attached to layer 7.
- the channels 9 have open ends 12 at side edges 13 of the membrane 1.
- an outer brickwork skin is illustrated at 15, a cavity at 16, a wall tie at 17, and an inner skin at 18, the latter comprising spaced apart timber sheeting 19 and 20 with spacing timber studwork 21 and thermal insulation blocks or strips 22 located between the sheeting 19, which consists of OSB board, and sheeting 20 which consists of plasterboard with a vapour control layer.
- the membrane 1 is supplied, on site, in roll form, and clearly needs to be of width and roll diameter that can be readily transported and handled and hence is typically 6 foot (2m) width 18 inches (45 cm) diameter. It follows, that during installation in the cavity 16, adjacent lateral and vertical edges of adjacent rolls need to be overlapped e.g. by 6 inches (15 cm) to ensure continuity of cover of the inner skin 18 by the membrane 1. Similarly as shown in Figure 2, a lower horizontal edge 23 of an upper membrane 1 needs to be overlapped with an upper horizontal edge 24 of a lower membrane 1 , again to ensure continuity of cover of the inner skin 18 by the membrane 1 , and to form a non-sealed, open, breathable lap joint 25.
- Figure 2 illustrates the membrane 1 , slightly spaced from the inner skin 18 and specifically before the fluted channels 9, or embossed air pockets of the membrane 1 are brought into contact with, the sheeting 19, so that the air channels or pockets projecting e.g. as ridges, ribs, flutes etc space the membrane 1 from the sheeting 19.
- the elongated air channels 9 are indicated as extending vertically, they could extend horizontally.
- a roof construction 26 can be seen to consist of plaster boards 27 on top of which is located a vapour barrier layer 28, above which are a plurality of spaced-apart rafters 29 having upper surfaces 30.
- a suitably thick layer of thermal insulation 31 on to the upper surface 32 of which insulation 31 is laid membrane 1 of Figure 1.
- the membrane 1 of Figure 1 is supplied in roll form and, as with cavity wall insulation, adjacent edges of adjacent rolls are overlapped to provide non-sealed, open, breathable lap joints (not shown).
- tile battens 33 and counter battens 34 are applied to which are fitted roof tiles 35.
- the insulation 31 is provided in strip form and is laid between adjacent rafters 29 with upper surfaces 32 of the insulation 31 substantially below the upper surfaces 30 of the rafters 29, so that lower surface 36 of the insulation 31 is contiguous with lower surface 37 of each rafter 29, with the vapour barrier layer 28 provided across the contiguous surfaces and a cavity 38 is formed between adjacent rafters by the fitting of sarking boards 39 applied across upper surfaces 30 of the rafters 29, with rolls of membrane 1 laid on the sarking boards 39.
- upper surfaces 32 of the insulation 31 are contiguous with upper surfaces 30 of the rafters 29, so that the rolls of membrane 1 are laid across these contiguous surfaces, and cavities 38 are defined between adjacent rafters 29 and also between the underside of the insulation 31 and the upper side of the plasterboard 27.
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Architecture (AREA)
- Acoustics & Sound (AREA)
- Electromagnetism (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Textile Engineering (AREA)
- Building Environments (AREA)
Abstract
A thermal insulation/breather/venting membrane (1) for use in building construction (14, 26) comprising a sheet (2) of reflective material having an outer surface (3) and an inner surface (4); a coating (5) applied to the outer surface (3) of the reflective material (2) to prevent, or restrict, oxidation; and a multi-layer sheet (6) of material including an inner, planar layer (7) bonded to the inner surface (4) of the reflective material (3); wherein the outer layer (8) of the sheet (2) of material is deformed to define a plurality of embossed, elongated air pockets, or elongated air channels (9), or is foamed.
Description
Title of the Invention
Membrane and building construction. Field of the Invention
This invention relates to a membrane for use in building construction, and to a building construction incorporating same. Background of the Invention
In the construction of buildings, particularly housing, there is a requirement for thermal insulation meeting building regulation requirements particularly in a cavity wall, especially in timber frame or modular housing. Such membranes require breathability to achieve condensation dispersal but have achieved this only to a limited extent. One such membrane proposal that is currently in use is described in GB
2367839, characterised in that membrane sheets are provided in two layers, being aluminium foil bonded to a sheet of synthetic plastics material provided with an array of air pockets or bubbles, with the installation, as taught in GB 2367839, involving the overlapping of adjacent edges of adjacent sheets to provide a non-sealed, open, breathable lap joint.
This membrane has a thickness of approximately 4mm and consequently a single, overlapped joint has a thickness of at least 8mm. Furthermore, multiple overlaps are sometimes effected, resulting in 12mm or 16mm thickness, which on occasion is difficult to accommodate within the space provided. Object of the Invention
A basic object of the invention is the provision of an improved thermal insulation/breather/venting membrane and building construction.
Summary of a First Aspect of the Invention
According to a first aspect of the invention there is provided a thermal insulation/breather/venting membrane for use in building construction comprising: (i) a sheet of reflective material having an outer surface and an inner surface; (ii) a coating applied to the outer surface of the reflective material to prevent, or restrict, oxidation; and
(iii) a sheet of synthetic plastics material consisting of two layers, being an inner, planar layer bonded to an outer layer, the sheets of plastics material being bonded by its planar, inner layer to the inner surface of the reflective material, and the outer layer of the sheet of plastics material being deformed to define a plurality of embossed air pockets, or elongated air channels, or being foamed. Advantage(s) of the First Aspect
The membrane in accordance with the first aspect, like that of GB 2367839, provides increased breathability, whilst retaining the characteristics of being waterproof, being of increased U-value without increased wall thickness, being fire retardant, being CFC/HCFC free, and being certified for building regulations, and can be produced in thicknesses less than 4mm, to minimise thickness accumulations at overlaps.
Summary of the Second Aspect of the Invention According to a second aspect of the invention, there is provided a building construction, particularly for housing, comprising: (i) an outer skin e.g. of brickwork, blockwork, close boarding, tiles, or cladding material;
(ii) an inner skin e.g. of timber or steel frame; (iii) a cavity between (i) and (ii); and
(iv) sheets of membrane in accordance with the first aspect located in the cavity and secured to the inner skin such that at least adjacent horizontal edges of adjacent sheets of membrane are overlapped, with lower edges of an upper sheet overlapping upper edges of lower sheets to provide a non-sealed, open, breathable lap joint.
The use of (iv), as with GB 2367839, results in ready escape of moisture into the cavity due to the increased breath ability by the use of exposed air channels. Preferred or Optional Features
The reflective material is aluminium foil. The reflective material is a metallised polyester.
In one air channel embodiment, the air channels extend vertically. In another air channel embodiment, the air channels extend horizontally. In the air channels embodiment, the channels are fully exposed to atmosphere at edges of the membrane. The air channels project as ridges or ribs, away from the inner, planar layer of the synthetic plastics material, so that in use, they may be engaged with the inner skin to space the membrane from the inner skin.
Vertical edges of adjacent sheets of membrane are overlapped. An inner face of the inner skin is provided with a lining e.g. of plywood sheets, to which lining the sheets of membrane are attached. Summary of a Third Aspect of the Invention
A third aspect of the invention relates to the use of a membrane in accordance with the first aspect as a thermal insulation/breather/venting membrane in a cavity between inner and outer skins of a building, with at least one unrestricted flow path for air and/or water vapour around overlapped edges of adjacent membranes.
Brief Description of the Drawings
The invention will now be described in greater detail, by way of examples, with reference to the accompanying drawings, in which:
Figure 1 is an exploded plan view of a membrane in accordance with the first aspect of the invention;
Figure 2 is a plan view of the membrane of Figure 1 installed in a cavity between inner and outer wall skins of a building construction in accordance with the second aspect of the invention;
Figure 3 is a view (not to scale) in the direction of arrow A of Figure 2, and Figures 4A, 4B and 4C illustrate three alternative installations of the membrane of Figure 1 in a roof of a building.
In the drawings, a membrane 1 in accordance with the first aspect of the invention comprises a sheet of aluminium foil 2 having an outer surface 3 and an inner surface 4. To the outer surface 3 is applied a coating 5 to prevent, or restrict, oxidation of that surface.
A sheet 6 of synthetic plastics material comprises an inner, planar layer 7 bonded to an outer layer 8, and the sheet 6 is bonded by its inner layer 7 to the inner surface 4 of the aluminium foil 2.
The outer layer 8 is non-planar, being deformed to define a plurality of elongated air channels 9 in the form of corrugations, with peaks, ridges, or ribs 10 etc projecting away from the inner planar layer 7, and with troughs 11 by which the layer 8 is attached to layer 7. The channels 9 have open ends 12 at side edges 13 of the membrane 1.
In the building construction 14 illustrated in Figure 1 and Figure 2 that is in accordance with the second aspect of the invention, an outer brickwork skin is
illustrated at 15, a cavity at 16, a wall tie at 17, and an inner skin at 18, the latter comprising spaced apart timber sheeting 19 and 20 with spacing timber studwork 21 and thermal insulation blocks or strips 22 located between the sheeting 19, which consists of OSB board, and sheeting 20 which consists of plasterboard with a vapour control layer.
The membrane 1 is supplied, on site, in roll form, and clearly needs to be of width and roll diameter that can be readily transported and handled and hence is typically 6 foot (2m) width 18 inches (45 cm) diameter. It follows, that during installation in the cavity 16, adjacent lateral and vertical edges of adjacent rolls need to be overlapped e.g. by 6 inches (15 cm) to ensure continuity of cover of the inner skin 18 by the membrane 1. Similarly as shown in Figure 2, a lower horizontal edge 23 of an upper membrane 1 needs to be overlapped with an upper horizontal edge 24 of a lower membrane 1 , again to ensure continuity of cover of the inner skin 18 by the membrane 1 , and to form a non-sealed, open, breathable lap joint 25. For purposes of illustration, Figure 2 illustrates the membrane 1 , slightly spaced from the inner skin 18 and specifically before the fluted channels 9, or embossed air pockets of the membrane 1 are brought into contact with, the sheeting 19, so that the air channels or pockets projecting e.g. as ridges, ribs, flutes etc space the membrane 1 from the sheeting 19. Although, in Figures 1 and 2, the elongated air channels 9 are indicated as extending vertically, they could extend horizontally.
In Figures 4A, 4B and 4C, a roof construction 26 can be seen to consist of plaster boards 27 on top of which is located a vapour barrier layer 28, above which are a plurality of spaced-apart rafters 29 having upper surfaces 30.
In the embodiment of Figure 4A, across the upper surface 30 of each rafter 29 is laid a suitably thick layer of thermal insulation 31 on to the upper surface 32 of which insulation 31 is laid membrane 1 of Figure 1. The membrane 1 of Figure 1 is supplied in roll form and, as with cavity wall insulation, adjacent edges of adjacent rolls are overlapped to provide non-sealed, open, breathable lap joints (not shown). On top of the foil 1 are applied tile battens 33 and counter battens 34 to which are fitted roof tiles 35.
In the embodiment of Figure 4B, the insulation 31 is provided in strip form and is laid between adjacent rafters 29 with upper surfaces 32 of the insulation 31 substantially below the upper surfaces 30 of the rafters 29, so that lower surface 36 of the insulation 31 is contiguous with lower surface 37 of each rafter 29, with the vapour barrier layer 28 provided across the contiguous surfaces and a cavity 38 is formed between adjacent rafters by the fitting of sarking boards 39 applied across upper surfaces 30 of the rafters 29, with rolls of membrane 1 laid on the sarking boards 39. In the embodiment of Figure 4C upper surfaces 32 of the insulation 31 are contiguous with upper surfaces 30 of the rafters 29, so that the rolls of membrane 1 are laid across these contiguous surfaces, and cavities 38 are defined between adjacent rafters 29 and also between the underside of the insulation 31 and the upper side of the plasterboard 27.
Claims
1. A thermal insulation/breather/venting membrane for use in building construction comprising a sheet of reflective material having an outer surface and an inner surface; a coating applied to the outer surface of the reflective material to prevent, or restrict, oxidation; and a multi-layer sheet of material including an inner, planar layer bonded to the inner surface of the reflective material; characterised in that the outer layer (8) of the sheet (6) of material is deformed to define a plurality of embossed, elongated air pockets, or elongated air channels (9), or is foamed.
2. A membrane as claimed in Claim 1 , characterised in that the reflective material is aluminium foil (2).
3. A membrane as claimed in Claim 1 , characterised in that the reflective material is a metallised polyester.
4. A membrane as claimed in any preceding claim, characterised in that the multilayer sheet (6) is a two-layer sheet.
5. A membrane as claimed in any preceding claim, characterised in that the multilayer sheet (6) has at least one layer (7 and/or 8) of synthetic plastics material.
6. A membrane as claimed in any one of Claims 1 to 4, characterised in that the multi-layer sheet (6) has at least one layer of a non-woven textile.
7. A membrane as claimed in any preceding claim, characterised in that the multilayer sheet (6) is flexible, so that the membrane may be produced as a roll for storage, transport and at installation.
8. A membrane as claimed in any preceding claim, characterised in that elongated air pockets or air channels (9) extend vertically, or alternatively, horizontally, with respect to the membrane.
9. A membrane as claimed in any preceding claim, with air channels, characterised in that the channels (9) are fully exposed to atmosphere at edges of the membrane (1).
10. A membrane as claimed in Claim 9, characterised in that the air channels (9) project as ridges or ribs (10), away from the inner, planar layer (7) of the sheet (6).
11. A membrane as claimed in any preceding claim, characterised in that a layer of reinforcement is applied to one surface of the reflective material (2).
12. A membrane as claimed in Claim 11 , characterised in that the coating (5) is applied to the inner surface (4) of the reflective material (2), adjacent the sheet (6).
13. A membrane as claimed in Claim 11 or Claim 12, characterised in that the reinforcement is a grid.
14. A membrane as claimed in any one of Claims 11 to 13, characterised in that the reinforcement is of synthetic plastic fibres or strands.
15. A building construction, particularly for housing, comprising:
(i) an outer skin e.g. of brickwork, blockwork, close boarding, tiles, or cladding material;
(ii) an inner skin e.g. of timber or steel frame; and (iii) a cavity between (i) and (ii); characterised in that (iv) sheets of membrane (1) in accordance with any one of Claims 1-14, are located in the cavity (16) and secured to the inner skin (18) such that at least adjacent horizontal edges (23, 24) of adjacent sheets of membrane (1) are overlapped, with lower edges (23) of an upper sheet overlapping upper edges (24) of lower sheets to provide a non-sealed, open, breathable lap joint(s) (25).
16. A building construction as claimed in Claim 15, characterised in that vertical edges of adjacent sheets of membrane (1) are overlapped.
17. A building construction as claimed in Claim 15 or Claim 16, characterised in that an inner face of the inner skin is provided with a lining (19), to which lining (19) the sheets of membrane (1) are attached.
18. The use of a membrane in accordance with any one of Claims 1 to 14, as a thermal insulation/breather/venting membrane (1) in a cavity (16) between inner and outer skins (18, 15) of a building (14), with at least one unrestricted flow path for air and/or water vapour around overlapped edges (23, 24) of adjacent membranes (1).
19. A building construction, particularly for housing, comprising: (i) a plurality of rafters; and (ii) thermal insulation mounted either across the tops of the rafters or in between and adjacent rafters; characterised in that
(iii) sheets of membrane (1) in accordance with any one of Claims 1 to 14 are located between the thermal insulation and conventionally provided tile battens and counter battens, such that at least adjacent horizontal edges (23, 24) of adjacent sheets of membrane (1) are overlapped, with lower edges (23) of an upper sheet overlapping upper edges (24) of lower sheets to provide a non-sealed, open, breathable lap joint(s).
20. A building construction as claimed in Claim 19, characterised in that the thermal insulation is relatively rigid, is mounted across the tops of the rafters, and the membrane (1) is laid on the exposed upper surface of the insulation.
21. A building construction as claimed in Claim 19, characterised in that the thermal insulation is mounted between adjacent rafters, and below the tops of the rafters, with sheets of sarking board then applied across the tops of the rafters, and the membrane (1) is laid on the exposed upper surface of the sarking board.
22. A building construction as claimed in Claim 19, characterised in that the thermal insulation is mounted between adjacent rafters, and contiguous with the tops of the rafters, and the membrane (1) is laid on the exposed upper surface of the rafters and the insulation.
23. The use of a membrane in accordance with any one of Claims 1 to 14 as a thermal insulation/breather/venting membrane in a roofing construction, with at least one unrestricted flow path for air and/or water vapour around overlapped edges (23, 24) of adjacent membranes (1).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/GB2005/003364 WO2007026108A1 (en) | 2005-08-31 | 2005-08-31 | Membrane and building construction |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/GB2005/003364 WO2007026108A1 (en) | 2005-08-31 | 2005-08-31 | Membrane and building construction |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2007026108A1 true WO2007026108A1 (en) | 2007-03-08 |
Family
ID=35295374
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/GB2005/003364 WO2007026108A1 (en) | 2005-08-31 | 2005-08-31 | Membrane and building construction |
Country Status (1)
Country | Link |
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WO (1) | WO2007026108A1 (en) |
Cited By (6)
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GB2451183A (en) * | 2007-07-17 | 2009-01-21 | Thermal Economics Ltd | Improved thermal insulation |
US8936847B2 (en) | 2006-04-19 | 2015-01-20 | Promethean Insulation Technology Llc | Metallized polymeric film reflective insulation material |
EP3626902A3 (en) * | 2018-09-21 | 2020-07-08 | Martin Kleppe | Composite wall structure for a building |
WO2021231270A1 (en) * | 2020-05-11 | 2021-11-18 | R. H. Tamlyn & Sons, Lp | Draining construction framework and methods for same |
US11274437B2 (en) * | 2018-02-10 | 2022-03-15 | R. H. Tamlyn & Sons, Lp | Draining construction framework and methods for same |
US11408142B2 (en) | 2018-02-10 | 2022-08-09 | R. H. Tamlyn & Sons, Lp | Draining construction wrap and methods for same |
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US4340634A (en) * | 1979-04-10 | 1982-07-20 | Pusch Guenter | Heat-reflective wall-paper or wall liner |
WO1998010216A1 (en) * | 1996-09-04 | 1998-03-12 | Krona Industries Ltd. | Low emissivity, high reflectivity heat insulation |
WO2001043972A1 (en) * | 1999-12-13 | 2001-06-21 | Fire & Thermal Protection Engineers, Inc. | Multi-layered fire retardant material |
GB2367839A (en) * | 2000-12-13 | 2002-04-17 | Yorkshire Building Services | Insulating membrane and building construction |
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US4340634A (en) * | 1979-04-10 | 1982-07-20 | Pusch Guenter | Heat-reflective wall-paper or wall liner |
WO1998010216A1 (en) * | 1996-09-04 | 1998-03-12 | Krona Industries Ltd. | Low emissivity, high reflectivity heat insulation |
WO2001043972A1 (en) * | 1999-12-13 | 2001-06-21 | Fire & Thermal Protection Engineers, Inc. | Multi-layered fire retardant material |
GB2367839A (en) * | 2000-12-13 | 2002-04-17 | Yorkshire Building Services | Insulating membrane and building construction |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
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US8936847B2 (en) | 2006-04-19 | 2015-01-20 | Promethean Insulation Technology Llc | Metallized polymeric film reflective insulation material |
GB2451183A (en) * | 2007-07-17 | 2009-01-21 | Thermal Economics Ltd | Improved thermal insulation |
GB2451183B (en) * | 2007-07-17 | 2010-07-07 | Thermal Economics Ltd | Improved thermal Insulation |
US11274437B2 (en) * | 2018-02-10 | 2022-03-15 | R. H. Tamlyn & Sons, Lp | Draining construction framework and methods for same |
US11408142B2 (en) | 2018-02-10 | 2022-08-09 | R. H. Tamlyn & Sons, Lp | Draining construction wrap and methods for same |
EP3626902A3 (en) * | 2018-09-21 | 2020-07-08 | Martin Kleppe | Composite wall structure for a building |
WO2021231270A1 (en) * | 2020-05-11 | 2021-11-18 | R. H. Tamlyn & Sons, Lp | Draining construction framework and methods for same |
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