GB2307490A - Flexible damp-proofing and insulating building element - Google Patents

Flexible damp-proofing and insulating building element Download PDF

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Publication number
GB2307490A
GB2307490A GB9524142A GB9524142A GB2307490A GB 2307490 A GB2307490 A GB 2307490A GB 9524142 A GB9524142 A GB 9524142A GB 9524142 A GB9524142 A GB 9524142A GB 2307490 A GB2307490 A GB 2307490A
Authority
GB
United Kingdom
Prior art keywords
building
damp
layer
flexible barrier
proofing
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.)
Withdrawn
Application number
GB9524142A
Other versions
GB9524142D0 (en
Inventor
David Alexander Mark
Kevin Roy Gundle
Clifford John Gundle
Michael Harold Raynor
Kenneth George Oswin
John Simon Gaiger
Charles Henry Keen
David Martin Holland
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.)
INPACE Ltd
Original Assignee
INPACE 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 INPACE Ltd filed Critical INPACE Ltd
Priority to GB9524142A priority Critical patent/GB2307490A/en
Publication of GB9524142D0 publication Critical patent/GB9524142D0/en
Publication of GB2307490A publication Critical patent/GB2307490A/en
Withdrawn legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B1/00—Border constructions of openings in walls, floors, or ceilings; Frames to be rigidly mounted in such openings
    • E06B1/003—Cavity wall closers; Fastening door or window frames in cavity walls
    • 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
    • E04B1/64—Insulation or other protection; Elements or use of specified material therefor for making damp-proof; Protection against corrosion
    • E04B1/644—Damp-proof courses
    • 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
    • E04B2001/7679—Means preventing cold bridging at the junction of an exterior wall with an interior wall or a floor

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

Abstract

A flexible barrier building element comprises a skin (1) of damp-proofing material surrounding a layer (2) of sound and/or heat insulating material. The element may have integral or attached skirt portions (3), and may be employed around windows and doors in ground or upper floors, and in cavity walls in general. The damp-proofing material may be a plastics such as polyethylene, e.g. in sheet form or as an extrusion, and the insulating layer may be of mineral wool or polystyrene, e.g.

Description

A FLEXIBLE BARRIER BUILDING ELEMENT The invention relates to a damp-proofing element, in particular for forming a damp-proof layer in a building.
When constructing a building it is desirable to prevent the ingress of moisture from the surrounding environment into the interior of the building by the incorporation into the building of a damp-proof course or damp-proof layer. Such a layer typically comprises a water-impermeable membrane. In addition it is desired to prevent a "cold bridge" forming where the cold outside air meets the warm inside air, for example at the dampproof layer, and traditionally a separate sheet or block insulating material has further been provided. For example in a cavity wall a damp-proof layer is provided adjacent the outer wall and an insulation layer is provided between the damp-proof layer and the inner wall.
The problems are particularly acute at cavity wall "returns", generally found around window and door frames where the gap between the inner and outer walls decreases and between foundation slabs and walls.
According to UK Patent No. 2144078 a modified arrangement has been proposed in which a membrane of damp-proofing material has, bonded to one side thereof, a thermally insulating sheet. Various problems arise with such an arrangement, however. The layer of insulating material is exposed and hence easily damaged on the building site and upon installation and also suffers from a tendency to return to the curve induced by the rolling of the material. In particular there is a risk of the two layers separating or the insulation disintegrating. Because of the relative frailty of the material it suffers particularly when in floors and foundations. Efforts to overcome these problems by strengthening or hardening the layer of insulating material give rise to the arrangement being less flexible and malleable. As a result the arrangement provides an unsatisfactory fit in certain applications.
According to the invention there is provided a flexible barrier building element comprising a skin of damp-proofing material provided around a layer of insulating material. Because the insulation layer is substantially encapsulated, it is protected from damage allowing a softer or more flexible material to be used.
As a result the element as a whole will be more flexible and fittable, therefore, into a wider range of cavities etc. In addition, the element can be used in more robust applications such as flooring and foundations without risk of damage to the insulation layer. Furthermore there is no risk of the insulation layer separating from the element, and there is no need to position separately the damp-proof layer and the insulating layer. The skin may comprise an insulating layer covering portion and at least one skirt portion extending therefrom, and preferably the insulating layer encapsulating portion is a central portion from either side of which skirt portions extend laterally. The skirt portions allow simplified and improved positioning of the element in a variety of applications.The covering portion and the or each skirt portion may be formed integrally or attached together, for example by heat or adhesive bonding, or fastening means such as staples.
The flexible barrier building element may comprise a damp-proof course.
The insulating layer may be formed of mineral wool and/or glass wool and/or polystyrene and may be a sound insulating layer and/or a thermal insulating layer. The skin may be formed of flexible plastics material, for example polyolefin, polyethylene or PVC. Alternatively the element may be formed of waterproof sheeting such as bituminous or pitch polymer material.
A ground floor construction of a building may include, as a barrier layer, an element as herein described.
A cavity wall of a building may include, as a barrier layer, an element as herein described.
An upper floor construction of a building may include, as a barrier layer, an element as herein described. An abutting inner and outer wall may comprise, as a barrier layer, an element as herein described.
The element may comprise a composite damp-proofing and insulating element.
According to the invention there is further provided a method of constructing a floor of a building including a building wall and a building floor and a flexible barrier building element including a skin of dampproofing material having a central portion provided around a layer of insulating material and skirt portions extending therefrom, in which the flexible barrier building element is located between the floor and the wall, a first skirt portion is gripped between upper and lower parts of the wall and a second skirt portion is gripped between upper and lower portions of the floor.
The second skirt portion may be bonded to a damp-proof membrane.
According to the invention there is provided a dampproofing element comprising a skin of damp-proofing material and a layer of insulating material substantially encapsulated therein.
Embodiments of the invention will now be described by way of example with reference to the drawings of which: Fig. 1 is a cross-sectional view of a damp-proofing element according to the present invention; Fig. 2 is a sectional view of the damp-proofing element positioned in a window frame return; Fig. 3 is a sectional view of the damp-proofing element used at a floor of a building; Fig. 4 shows an element in use as a sound-proofing element at an upper floor of a building; Fig. 5a shows a sectional view of an ideal cavity wall; Fig. 5b shows a sectional view of an actual cavity wall; Fig. 6a shows a sectional perspective view of an ideal floor of a building; Fig. 6b shows a sectional perspective view of an actual floor of a building; and Fig. 7 shows the element used between abutting inner and outer walls of a building.
Referring to Fig. 1 a damp-proofing element shown generally as 4 includes a skin 1 of damp-proofing material and a layer 2 of insulating material encapsulated within the skin 1. The damp-proofing material may be, for example, plastics material such as polyolefin, polyethylene or co-polymer sheeting. The skin 1 may be in the form of a simple plastics sheeting or membrane having appropriate water-proofing attributes or can be formed of damp-proof board, or may be an extrusion of PVC, polyethylene or other plastics material. The insulation material can be any known suitable type such as mineral wool (for example the product manufactured under the trade name "Rockwool"), glass wool or polystyrene. Because the insulation layer 2 is protected by the skin 1 cheaper, softer, more flexible and less hardy insulation materials can be used.
It should be noted that the insulation material can be chosen to insulate against any or all of noise, heat and moisture. The insulation layer 2 may be encapsulated within the skin 1 by any suitable means such as wrapping the skin 1 around the layer 2 and bonding the skin 1 together, or coating the insulation layer 2 with suitable material to form the skin 1.
In its preferred form the damp-proofing element 4 includes skirt portions, or wings, or flaps 3. One or more such skirt portions 3 may be provided. Generally, the insulation layer 2 is encapsulated in a central portion of the skin 1 and the skirt portions 3 extend laterally either side of the central portion. The skirt portions 3 may be formed integrally with the central portion or may be formed by bonding a membrane of suitable damp-proofing material to a preformed skin portion 1 encapsulating an insulation layer 2. The parts can be bonded by heat, ultrasound or friction welding, or by adhesive or melted material or may be fastened with staples or similar fastener means.
Generally the element 4 is provided in long bars or ribbons with the skirt portions 3 extending from the short sides of the bar and running along the length of the bar down the center of the short sides. The particular dimensions can, of course, be configured to the dimensions of the cavity in which it is to be inserted or whatever other working parameters are involved. Although the insulating material is encapsulated in a damp-proof skin, the element may be cut to size leaving end portions of the insulating material exposed. It will be appreciated that that does not affect the functioning of the element in any way.
Because the insulation layer 2 is protected by the damp-proofing material of the skin 1 the damp-proofing element 4 according to the present invention can be used in a wide range of building applications, for example around windows and doors, in conjunction with ground and upper floors and in cavity walls in general. This is, inter alia, because of the improved level of protection for the insulation layer 2 afforded by the skin 1. As discussed in more detail below, the skirt portions 3 also allow simplified and improved use of the element 4 in various applications.
Referring to Fig. 2 a damp-proofing element 4 is provided in a cavity wall return 5 adjacent a window frame 6. The cavity wall includes an inner wall 7 and an outer wall 8 and a conventional insulation layer 9 provided in the cavity. The damp proofing element 4 is provided at the cavity wall return 5 (the area where the gap between the inner wall 7 and outer wall 8 decreases adjacent the window). As can be seen the damp-proofing element 4 is simply mounted in the return with no need to position individually a damp-proofing layer and an insulation layer. In addition, the provision of the skirt portions 3 allows simplified positioning of the damp-proofing element 4, one of the skirt portions 3 being gripped between the window frame 6 and the outer wall 8 and the other skirt portion 3 lying along the inner face of the outer wall 8.
Referring to Fig. 3 a damp-proofing element 4 is used in conjunction with the ground floor of a cavity wall building. The cavity wall includes an outer wall 8 and an inner wall 7 together with a conventional insulation layer 9. In accordance with current building regulations the floor construction comprises a plurality of layers, a base layer 10 of sand blinding on hardcore, a conventional insulation layer 11, an intermediate layer 12 and an upper layer 13 of, for example, sand cement screed. The damp-proof element is arranged parallel with and abutting the inner wall 7, between the inner wall 7 and both of the intermediate layer 12 and insulation layer 11. Once again, the skirt portions 3 of the dampproofing element 4 enable improved and simplified locating of the damp-proofing element 4.The upper skirt portion 3 is placed between upper and lower parts of the inner wall 7 at a break adjacent the boundary between the layers 12 and 13 of the floor. The lower skirt portion 3 is gripped between the insulation layer 11 and the base layer 10 of the floor. Accordingly, problems with the jointing of the arrangement are avoided and improved insulation protection and installation are provided. The arrangement can be contrasted with the current system in which a membrane is positioned as appropriate and a separate insulation layer is then provided which gives rise to problems in positioning, aligning and jointing the various components. The problems with the prior art arrangements are illustrated in Figs. 6a and 6b. In Fig.
6a an ideal floor arrangement is shown, like elements being designated with like reference numerals where appropriate. Traditionally a damp-proof membrane 20 is provided, laid across the base layer 10 of the floor, up a portion of the inner wall 7 and along the top of the inner wall 7. An insulating element 21 is then placed between the damp-proofing membrane 20 and the layers 11 and 12 of the floor. In reality, as shown in Fig. 6b, when the floor is laid over the membrane 20 crinkling and folding of the membrane 20 occurs and it is not possible to neatly position the insulating block 21 in place nor to fold a portion of the membrane 20 over the top part of the lower portion of the inner wall 7. The problem is exacerbated by irregularities in the sides surfaces of the floor portions 11 and 12.In contrast, the element 4 of the present invention is merely bonded to the membrane 20 at the lower skirt and the problems are thus avoided.
Referring to Fig. 4 the damp-proofing element 4 can also be used in conjunction with an upper floor arrangement. An upper floor joist 14 is suspended on a joist support or hanger 15, with the damp-proofing element 4 interposed between them. The damp-proofing element 4 is bent into or configured as an L-shaped element such that it extends both between the floor joist 14 and the interior wall 7 and the floor joist 14 and the support 15. In this case the element 4 acts as a soundproofing element.
Shown in Fig. 7 is another application where the element 4 may be incorporated, where inner walls 30 are built up against outer walls 40, for example outer walls of a single layer (no cavity). In such walls a cold bridge is established but, by the provision of the element 4 at the junction between the walls the problem is avoided.
Referring to Figs. 5a and 5b an idealised and actual sectional view respectively of a cavity wall are shown.
Although, ideally, the gap or cavity between the inner wall 7 and the outer wall 8 is of constant width bounded by smooth parallel walls, in practice the gap is uneven (as shown in Fig. 5b) and the walls are not smooth owing to broken blocks, mortar fills and the like. The dampproofing element of the present invention is more flexible than known arrangements because a softer and more malleable insulating layer can be provided as it is protected by the encapsulating damp-proofing skin.
Accordingly, unlike known arrangements, the damp-proofing element according to the present invention can be inserted into irregular cavities and will fit more snugly owing to its flexibility. As a result the damp-proofing element may be used in a variety of applications.
It will be appreciated that the damp-proofing element can be used in any application where dampproofing insulation is required. The dimensions of the element may be configured so as to match the dimensions of the portion of the building to be damp-proofed.

Claims (20)

1. A flexible barrier building element comprising a skin of damp-proofing material provided around a layer of insulating material.
2. A flexible barrier building element as claimed in claim 1 in which the skin comprises an insulating layer covering portion and at least one skirt portion extending therefrom.
3. A flexible barrier building element as claimed in claim 2 in which the insulating layer covering portion is a central portion from either side of which skirt portions extend laterally.
4. A flexible barrier building element as claimed in claim 2 or claim 3 in which the covering portion and the or each skirt portion are formed integrally.
5. A flexible barrier building element as claimed in claim 2 or claim 3 in which the covering portion and the or each skirt portion are attached together.
6. A flexible barrier building element as claimed in any preceding claim comprising a damp-proof course.
7. A flexible barrier building element as claimed in any preceding claim in which the insulating layer is formed of mineral wool and/or glass wool and/or polystyrene.
8. A flexible barrier building element as claimed in any preceding claim in which the insulating layer is a sound insulating layer and/or a thermal insulating layer.
9. A flexible barrier building element as claimed in any preceding claim in which the skin is formed of plastics material, for example polyolefin, polyethylene, or flexible PVC.
10. An element as claimed in any preceding claim in which the skin is formed of a water-proofing sheeting such as bituminous or pitch polymer material.
11. A ground floor construction of a building including, as a barrier layer, an element as claimed in any preceding claim.
12. A cavity wall of a building including, as a barrier layer, an element as claimed in any of claims 1 to 10.
13. An abutting inner and outer wall of a building including as a barrier layer, an element as claimed in any of claims 1 to 10.
14. An upper floor construction of a building including, as a barrier layer, an element as claimed in any of claims 1 to 10.
15. An element as claimed in any of claims 1 to 10 comprising a composite damp-proofing and insulating element.
16. A method of constructing a floor of a building including a building wall and a building floor and a flexible barrier building element including a skin of damp-proofing material having a central portion provided around a layer of insulating material and skirt portions extending therefrom, in which the flexible barrier building element is located between the floor and the wall, a first skirt portion is gripped between upper and lower parts of the wall and a second skirt portion is gripped between upper and lower portions of the floor.
17. A method as claimed in claim 16 in which the second skirt portion is bonded to a damp-proof membrane.
18. A flexible barrier building element substantially as herein described with reference to the accompanying drawings.
19. A building construction including a flexible barrier building element substantially as herein described with reference to the drawings.
20. A damp-proofing element comprising a skin of dampproofing material and a layer of insulating material substantially encapsulated therein.
GB9524142A 1995-11-24 1995-11-24 Flexible damp-proofing and insulating building element Withdrawn GB2307490A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9524142A GB2307490A (en) 1995-11-24 1995-11-24 Flexible damp-proofing and insulating building element

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9524142A GB2307490A (en) 1995-11-24 1995-11-24 Flexible damp-proofing and insulating building element

Publications (2)

Publication Number Publication Date
GB9524142D0 GB9524142D0 (en) 1996-01-24
GB2307490A true GB2307490A (en) 1997-05-28

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GB9524142A Withdrawn GB2307490A (en) 1995-11-24 1995-11-24 Flexible damp-proofing and insulating building element

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2404203A (en) * 2003-07-22 2005-01-26 Ronald James Lucas Composite insulation for use in cavity walls
GB2413805A (en) * 2004-05-05 2005-11-09 Ray Wolfenden Flood protection for buildings
FR2976301A1 (en) * 2011-06-07 2012-12-14 Paris Ouest Construction Method for designing and realizing concrete structure for building e.g. office building, involves casting structural element such that structural element is locally separated from vertical wall by segment of insulating material blade
US9663944B1 (en) 2015-07-30 2017-05-30 Mark W. Lam Wallboard panel support and method for installing a wallboard panel

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1167267A (en) * 1966-04-01 1969-10-15 Goodrich Co B F Expansion Joints in Buildings
GB1307774A (en) * 1969-12-11 1973-02-21 Gullfiber Ab Sealing system
GB1354172A (en) * 1971-07-20 1974-06-05 Monsanto Chemicals Plastics materials
GB2071730A (en) * 1980-02-02 1981-09-23 Glover J E S Improvements in or relating to cavity closures
US4449713A (en) * 1980-10-17 1984-05-22 Hayakawa Rubber Company Limited Aqueously-swelling water stopper and a process of stopping water thereby
GB2193984A (en) * 1986-08-19 1988-02-24 Parker Limited A roofing or cladding system
US4848044A (en) * 1988-07-14 1989-07-18 Manville Corporation Expansion joint cover
GB2289433A (en) * 1994-05-18 1995-11-22 Rockwool Ltd Damp-proof course
GB2292570A (en) * 1994-08-25 1996-02-28 T D I Cavity wall closure

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1167267A (en) * 1966-04-01 1969-10-15 Goodrich Co B F Expansion Joints in Buildings
GB1307774A (en) * 1969-12-11 1973-02-21 Gullfiber Ab Sealing system
GB1354172A (en) * 1971-07-20 1974-06-05 Monsanto Chemicals Plastics materials
GB2071730A (en) * 1980-02-02 1981-09-23 Glover J E S Improvements in or relating to cavity closures
US4449713A (en) * 1980-10-17 1984-05-22 Hayakawa Rubber Company Limited Aqueously-swelling water stopper and a process of stopping water thereby
GB2193984A (en) * 1986-08-19 1988-02-24 Parker Limited A roofing or cladding system
US4848044A (en) * 1988-07-14 1989-07-18 Manville Corporation Expansion joint cover
GB2289433A (en) * 1994-05-18 1995-11-22 Rockwool Ltd Damp-proof course
GB2292570A (en) * 1994-08-25 1996-02-28 T D I Cavity wall closure

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2404203A (en) * 2003-07-22 2005-01-26 Ronald James Lucas Composite insulation for use in cavity walls
GB2404203B (en) * 2003-07-22 2007-08-22 Ronald James Lucas Insulation for use in cavity walls
GB2413805A (en) * 2004-05-05 2005-11-09 Ray Wolfenden Flood protection for buildings
FR2976301A1 (en) * 2011-06-07 2012-12-14 Paris Ouest Construction Method for designing and realizing concrete structure for building e.g. office building, involves casting structural element such that structural element is locally separated from vertical wall by segment of insulating material blade
US9663944B1 (en) 2015-07-30 2017-05-30 Mark W. Lam Wallboard panel support and method for installing a wallboard panel
US10087616B1 (en) 2015-07-30 2018-10-02 Mark W. Lam Wallboard panel support and method for installing a wallboard panel

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Publication number Publication date
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