초록 ▼

A weatherproofing backer for installing windows and doors is described as having a foam layer and an adhesive layer. The adhesive is pressure-activated and is self-sealing about attaching hardware. The foam is self-setting and, in use, molds to the flange of the window unit. When installed, the foam

A weatherproofing backer for installing windows and doors is described as having a foam layer and an adhesive layer. The adhesive is pressure-activated and is self-sealing about attaching hardware. The foam is self-setting and, in use, molds to the flange of the window unit. When installed, the foam layer is compressed between the inner window frame and rough opening and between the window flange and the wall surface adjacent the rough opening. The weatherproofing backer is designed to extend beyond the flange of the window unit and thereby receive the weatherproofing membrane thereover. The weatherproofing backer, then acts as a sealed bridge between the membrane and the window unit precluding entry of air and water. Both the foam and the adhesive have fire retardants in the formulation thereof. A tape form with a self-skinned foam layer and a sheet form, with polymeric covering web are provided.

대표청구항 ▼

What is claimed is: 1. A weatherproofing backer for use in window installation in building structures having an exterior wall with a rough opening therethrough, said rough opening with an interior surface for receiving a flanged window unit having a window flange, said wall being a substrate for a

What is claimed is: 1. A weatherproofing backer for use in window installation in building structures having an exterior wall with a rough opening therethrough, said rough opening with an interior surface for receiving a flanged window unit having a window flange, said wall being a substrate for a weatherproofing membrane and said flanged window unit, said flanged window unit and said weatherproofing membrane having a juncture, said weatherproofing backer comprising, in combination: a self-setting foam web having two surfaces, said foam web having a predetermined recovery rate and being self-setting with a compression set of 20 to 80 percent at 18 psi, said foam web maintaining the cavity between said window unit and said opening therefor compressively filled, said foam web selected from a group consisting of an open cell structure, a closed cell structure, and a structure of open and closed cells; a pressure-activated adhesive layer disposed on one of said two major surfaces, said adhesive layer having sufficient tack to, upon pressure activation, be adapted to durably adhere said weatherproofing backer to said substrate, said weatherproofing backer configured to extend beyond said window flange and engage said weatherproofing membrane to form a sealed bridge between said window flange and said weatherproofing membrane; and, whereby said juncture between said flanged window unit and said weatherproofing membrane is sealed against water and air penetration. 2. A weatherproofing backer as described in claim 1 wherein said window unit has flanges thereabout securable to said substrate by attaching hardware extending through said weatherproofing backer and into said substrate, said adhesive layer being adapted to seal said attaching hardware thereby maintaining integrity of the seal against water and air penetration. 3. A weatherproofing backer as described in claim 1 wherein said predetermined recovery rate of said foam web provides said compressively filled condition over the temperature range of −70° F. to +180° F. 4. A weatherproofing backer as described in claim 1 wherein said foam web has a predetermined compression set adapting said foam web to mold to the exterior configuration of said flanges of said window unit. 5. A weatherproofing backer as described in claim 4 further comprising: a release sheet adhered to said adhesive layer, said release sheet being removable prior to mounting of said weatherproofing backer. 6. A weatherproofing backer as described in claim 1 wherein said pressure-activated adhesive layer is an adhesive selected from the group consisting of a hot melt adhesive, a butyl-based adhesive, an acrylic adhesive, a water-based adhesive, a bituminous adhesive, and mixtures thereof. 7. A weatherproofing backer as described in claim 6 wherein said foam web further comprises a fire retardant additive. 8. A weatherproofing backer as described in claim 7 wherein the presence therein of a predetermined quantity of said fire retardant additive forms a self-extinguishing rated foam web; whereby said weatherproofing backer meets standards for avoidance of smoke generation and flame acceleration. 9. A weatherproofing backer for use in building construction having a wall with a rough opening therethrough for receiving a window unit having flanges thereabout and a waterproofing membrane thereover, said wall being a substrate for said window unit and said waterproofing membrane, said flange having a face plane, said window flashing comprising in combination: a self-setting foam web having two major surfaces, said foam web having a predetermined recovery rate, said foam web for maintaining the cavity between said window unit and said opening therefor compressively filled; a polymeric covering web laminarly disposed on one of said major surfaces of said foam web, said polymeric covering web adapted and selected for compatibility with said waterproofing membrane; a pressure-activated adhesive layer disposed on said two major surfaces opposite said polymeric covering layer, said adhesive layer having sufficient tack to, upon pressure activation, be adapted to durably adhere said weatherproofing backer to said substrate; and, said foam web disposed all about said opening and adapted upon installation of said window unit, configured to extend beyond said flange thereof and to underlie said weatherproofing membrane forming a sealed bridge between said window flange and said weatherproofing membrane; said window unit adapted to be compressively disposed on said weatherproofing backer with said face plane of said flange intermediate the face plane of said wall and a face plane of said weatherproofing backer; whereby said opening for receiving said window unit is sealed against water and air penetration. 10. A weatherproofing backer as described in claim 9 wherein said foam web is selected from a group consisting of an open cell structure, a closed cell structure, a structure of open and closed cells, a crosslinked structure, and a non-crosslinked structure. 11. A weatherproofing backer as described in claim 9 further comprising: a release sheet adhered to said adhesive layer, said release sheet adapted to be removable prior to mounting on said substrate. 12. A weatherproofing backer as described in claim 9 wherein said pressure-activated adhesive layer is an adhesive selected from the group consisting of a hot melt adhesive, a butyl-based adhesive an acrylic adhesive, water-based adhesive, a bituminous adhesive, and mixtures thereof. 13. A weatherproofing backer as described in claim 9 wherein said foam web is reprocessed to remove any remanent blowing gases and replace said gases with ambient air, thereby precluding outgassing. 14. A weatherproofing backer for use in building construction having a wall with an opening therethrough for receiving a window unit having flanges thereabout, said wall being substrate for a weatherproofing membrane and said window unit, said weatherproofing backer comprising in combination: a self-setting foam web having two major surfaces, said foam web having a predetermined recovery rate and being self-setting with a compression set of 20 to 80 percent at 18 psi; a pressure-activated adhesive layer disposed on one of said two major surfaces, said adhesive layer having sufficient tack to, upon pressure activation, be adapted to durably adhere said window flashing to said substrate, said weatherproofing backer configured to extend beyond said window flange and engage said weatherproofing membrane, said pressure-activated adhesive layer is an adhesive selected from the group consisting of a hot melt adhesive, a butyl-based adhesive, an acrylic adhesive, a water-based adhesive, a bituminous adhesive, and mixtures thereof; and, said foam web disposed all about said opening and adapted to have said window unit compressively disposed thereon; whereby said opening for receiving said window unit is sealed against water and air penetration. 15. A weatherproofing backer as described in claim 14 wherein said window unit has flanges thereabout securable to said substrate by attaching hardware extending through said weatherproofing backer and into said substrate, said adhesive layer being adapted to seal said attaching hardware thereby maintaining integrity of the seal against water and air penetration. 16. A weatherproofing backer as described in claim 15 wherein said predetermined recovery rate of said foam web adapts said foam web to maintain the cavity between said opening and said window unit in a compressively filled condition over the temperature range of −70° F. to +180° F. 17. A weatherproofing backer as described in claim 14 wherein said foam web further comprises a fire retardant additive wherein the presence therein of a predetermined quantity of said fire retardant additive forms a self-extinguishing rated foam web; whereby said foam web meets standards for avoidance of smoke generation and flame acceleration. 18. A weatherproofing backer for use in building construction having a wall with a rough opening therethrough for receiving a window unit with a flange thereabout, an exterior surface of said wall being a substrate for weatherproofing membrane and said window unit, said weatherproofing backer comprising in combination: a self-setting foam web having two major surfaces, said foam web having a predetermined recovery rate, said foam web configured to maintain the cavity between said window unit and said opening therefore compressively filled, said foam web selected from a group of an open cell structure, a closed cell structure, and a structure of open and closed cells said foam web, in turn, comprising: a liner portion adapted, upon installation, to cover the interior surface of said rough opening; a seal portion adjacent to and contiguous with said line portion adapted, upon installation, to compressively seal against said flange of said window unit; an outer peripheral portion adjacent and contiguous with said seal portion adapted, upon installation, to receive said weatherproofing membrane thereon; and, a pressure-activated adhesive layer disposed on one of said two major surfaces, said adhesive layer having sufficient tack to, upon pressure activation, be adapted to durably adhere to said weatherproofing backer to said substrate. 19. A weatherproofing backer as described in claim 18 wherein said window unit further comprises attaching hardware mountable through said flange and wherein said weatherproofing backer further comprises: said adhesive layer, upon installation of said window unit, adapted to seal said attaching hardware without water and air penetration. 20. A weatherproofing backer as described in claim 19 wherein, upon installation of said window unit, said weatherproofing backer configured to extend beyond said window flange and engage said weatherproofing membrane to form a sealed bridge between the interior surface of said flange of said window unit and the interior surface of said weatherproofing membrane. 21. A weatherproofing backer as described in claim 20 wherein, upon tightening of said attaching hardware, said weatherproofing backer is adapted to be resiliently deformed and to form an expansion joint between said flange of said window unit and said exterior surface of said wall. 22. A weatherproofing backer as described in claim 21 wherein said foam web of said expansion joint is selected for a predetermined recovery rate to maintain a sealed condition over a temperature range of −70° F. to +180° F. 23. A weatherproofing system for use in building structures having a wall with a rough opening therethrough for receiving a window unit with a flange thereabout, an exterior surface of said wall being a substrate for said window unit, said weatherproofing system comprising, in combination: a foam liner portion formed from a polymeric web having two major surfaces adapted, upon installation, to line the interior of said rough opening; a foam seal portion formed from a polymeric web having two major surfaces, said foam seal portion adjacent to and contiguous with said foam liner portion, said foam seal portion adapted, upon installation, to compressively seal against said flange of said window unit, to be resiliently deformed thereby, and to be disposed on said substrate; a foam outer peripheral portion formed from a polymeric web having two major surfaces, said foam outer peripheral portion adjacent to and contiguous with said foam seal portion adapted, upon installation, to be disposed on said substrate; a pressure-activated adhesive layer disposed on one of said two major surfaces of said foam liner portion, of said foam seal portion and of said foam outer peripheral portion, said adhesive layer having sufficient tack to, upon pressure activation, be adapted to respectively adhere said foam liner portion to said interior of said rough opening and said foam seal portion and said foam outer peripheral portion to said substrate; and, a weatherproofing membrane disposed on said substrate and extending over said foam outer peripheral portion and said foam seal portion and attached to said substrate therethrough. 24. A weatherproofing system as described in claim 23 wherein said window unit further comprises an inner frame and wherein said foam liner portion has a predetermined thickness and adapts said window unit to upon installation, to compressively seal said inner frame against said foam liner portion whereby the requirement for adding additional insulation is obviated. 25. A weatherproofing system as described in claim 24 wherein said polymeric web forming said foam seal portion is self-setting and is adapted to mold to said flange of said window unit, to have sufficient memory upon thermal contraction to maintain intimate contact with said flange of said window unit and to have sufficient resilience upon thermal expansion to maintain intimate contact with said flange of said window unit. 26. A weatherproofing system as described in claim 25 wherein said polymeric web maintains the sealed condition over a temperature range of −70° F. to +180° F.