Flashing for integrating windows with weather resistant barrier

Abstract

A self-adhesive flashing for integrating a flanged fenestration unit installed in a rough opening in a wall with a water resistive barrier where the flashing includes an elongated substrate having a pressure-sensitive adhesive layer adhered to at least one side of the substrate along a lateral edge of the substrate and methods for applying the flashing.

1 . A flashing for integrating a flanged fenestration unit and a water resistive barrier, the flashing comprising:
 (a) an elongated flexible substrate having two major surfaces and a first lateral edge and second lateral edge defining a width of the substrate therebetween, the substrate selected from the group consisting of nonwoven fabric, woven fabric, film, paper, sheet metal, and combinations thereof;   (b) an elongated adhesive layer having a width less than the width of the substrate adhered to one of the major surfaces of the substrate adjacent the first lateral edge of the substrate;   (c) a release liner covering the adhesive layer wherein the release liner is scored or perforated along a line parallel to the first lateral edge of the substrate and located a distance from the first lateral edge that is less than the width of the adhesive layer dividing the release liner into a first release liner section adjacent the first lateral edge and a second release liner section.   
   
   
       2 . A flashing for integrating a flanged fenestration unit and a water resistive barrier, the flashing comprising:
 (a) an elongated flexible substrate having two major surfaces and a first lateral edge and second lateral edge defining a width of the substrate therebetween, the substrate selected from the group consisting of nonwoven fabric, woven fabric, film, paper, sheet metal, and a combination thereof;   (b) an elongated adhesive layer having a width less than the width of the substrate adhered to each of the major surfaces of the substrate adjacent the first lateral edge of the substrate;   (c) a release liner covering each of the adhesive layers.   
   
   
       3 . A flashing for integrating a flanged fenestration unit and a water resistive barrier, the flashing comprising:
 (a) an elongated flexible substrate having two major surfaces and first and second lateral edges defining a width of the substrate therebetween, the substrate selected from the group consisting of nonwoven fabric, woven fabric, film, paper, sheet metal, and a combination thereof;   (b) a first elongated adhesive layer adhered to one of the major surfaces of the substrate wherein the first elongated adhesive layer has a first edge substantially adjacent the first lateral edge of the substrate and a second edge,   (c) a second elongated adhesive layer adhered to the other major surface of the substrate wherein the second elongated adhesive layer does not overlap the first elongated adhesive layer in the plane of the substrate;   (d) a release liner covering each of the adhesive layers.   
   
   
       4 . A flashing for integrating a flanged fenestration unit and a water resistive barrier, the flashing comprising:
 (a) an elongated flexible substrate having two major surfaces and a first lateral edge and second lateral edge defining a width of the substrate therebetween, the substrate selected from the group consisting of nonwoven fabric, woven fabric, film, paper, sheet metal, and combinations thereof;   (b) an elongated adhesive layer having a width less than the width of the substrate adhered to one of the major surfaces of the substrate such that elongated adhesive layer extends beyond the first lateral edge of the substrate;   (c) a first release liner covering only the width of the surface of the elongated adhesive layer that extends beyond the first lateral edge of the substrate   (d) a second release liner covering the entire width of the surface of the elongated adhesive layer opposite the surface in (c) wherein the second release liner is scored or perforated along a line parallel to the first lateral edge of the substrate and divides the second release liner into a first section and a second section.   
   
   
       5 . The flashing of  claim 1 ,  2 ,  3  or  4 , wherein the adhesive layer comprises butyl rubber adhesive. 
   
   
       6 . The flashing of  claim 1 ,  2 ,  3  or  4 , wherein the substrate is folded outward near the second lateral edge. 
   
   
       7 . The flashing of  claim 3 , wherein the first elongated adhesive layer and the second elongated adhesive layer each has a width of about 1 inch (2.54 cm) to 3 inches (7.6.2 cm). 
   
   
       8 . A method for preventing the ingress of moisture into a wall of a building surrounding a flanged fenestration unit installed in a rough opening of the wall, the wall and the rough opening being defined by framing members, the method comprising:
 (a) installing the fenestration unit in the rough opening such that the flange of the fenestration unit overlaps the framing members of the rough opening;   (b) providing a flashing comprising an elongated flexible substrate having two major surfaces and a first lateral edge and second lateral edge defining a width of the substrate therebetween, an elongated adhesive layer having a width less than the width of the substrate adhered to one of the major surfaces of the substrate adjacent the first lateral edge of the substrate, and a release liner covering the adhesive layer wherein the release liner is scored along a line parallel to the first lateral edge of the substrate and located a distance from the first lateral edge that is less than the width of the adhesive layer dividing the release liner into a first release liner section adjacent the first lateral edge and a second release liner section;   (c) folding the flashing along the scored line such that the substrate is folded on itself;   (d) removing the second release liner section from the flashing to expose a portion of the adhesive layer;   (e) adhering the exposed adhesive to the flange of the fenestration unit along the sides and uppermost portion of the fenestration unit;   (f) removing the first release liner section from the flashing to expose the remaining portion of the adhesive layer;   (g) installing water resistive barrier over the wall surrounding the fenestration unit such that the water resistive barrier is adhered to the remaining portion of the adhesive layer along the sides and uppermost portion of the fenestration unit and such that the water resistive barrier immediately below the lowermost portion of the fenestration unit is covered by the substrate of the flashing.   
   
   
       9 . A method for preventing the ingress of moisture into a wall of a building surrounding a flanged fenestration unit installed in a rough opening of the wall, the wall and the rough opening being defined by framing members, the method comprising:
 (a) installing the fenestration unit in the rough opening such that the flange of the fenestration unit overlaps the framing members of the rough opening;   (b) providing a flashing comprising an elongated flexible substrate having two major surfaces and a first lateral edge and second lateral edge defining a width of the substrate therebetween, an elongated adhesive layer having a width less than the width of the substrate adhered to each of the major surfaces of the substrate adjacent the first lateral edge of the substrate, and a release liner covering each of the adhesive layers;   (c) removing the release liner from one of the adhesive layers to expose the adhesive layer;   (d) adhering the exposed adhesive layer to the flange of the fenestration unit along the sides and uppermost portion of the fenestration unit;   (e) removing the release liner from the flashing to expose the remaining adhesive layer;   (f) installing water resistive barrier over the wall surrounding the fenestration unit such that the water resistive barrier is adhered to the remaining adhesive layer along the sides and uppermost portion of the fenestration unit and such that the water resistive barrier immediately below the lowermost portion of the fenestration unit is covered by the substrate of the flashing.   
   
   
       10 . A method for preventing the ingress of moisture into a wall of a building surrounding a flanged fenestration unit installed in a rough opening of the wall, the wall and the rough opening being defined by framing members, the method comprising:
 (a) providing a flashing comprising an elongated flexible substrate having two major surfaces and a first lateral edge and second lateral edge defining a width of the substrate therebetween, an elongated adhesive layer having a width less than the width of the substrate adhered to one of the major surfaces of the substrate adjacent the first lateral edge of the substrate, and a release liner covering the adhesive layer wherein the release liner is scored along a line parallel to the first lateral edge of the substrate and located a distance from the first lateral edge that is less than the width of the adhesive layer dividing the release liner into a first release liner section adjacent the first lateral edge and a second release liner section;   (b) folding the flashing along the scored line such that the substrate is folded on itself;   (c) removing the second release liner section from the flashing to expose a portion of the adhesive layer;   (d) adhering the exposed adhesive to the flange of a fenestration unit along the sides and uppermost portion of the fenestration unit;   (e) installing the fenestration unit in the rough opening such that the flange of the fenestration unit overlaps the framing members of the rough opening;   (f) removing the first release liner section from the flashing to expose the remaining portion of the adhesive layer;   (g) installing water resistive barrier over the wall surrounding the fenestration unit such that the water resistive barrier is adhered to the remaining portion of the adhesive layer along the sides and uppermost portion of the fenestration unit and such that the water resistive barrier immediately below the lowermost portion of the fenestration unit is covered by the substrate of the flashing.   
   
   
       11 . A method for preventing the ingress of moisture into a wall of a building surrounding a flanged fenestration unit installed in a rough opening of the wall, the wall and the rough opening being defined by framing members, the method comprising:
 (a) providing a flashing comprising an elongated flexible substrate having two major surfaces and a first lateral edge and second lateral edge defining a width of the substrate therebetween, an elongated adhesive layer having a width less than the width of the substrate adhered to each of the major surfaces of the substrate adjacent the first lateral edge of the substrate, and a release liner covering each of the adhesive layers;   (b) removing the release liner from one of the adhesive layers to expose the adhesive layer;   (c) adhering the exposed adhesive layer to the flange of a fenestration unit along the sides and uppermost portion of the fenestration unit;   (d) installing the fenestration unit in the rough opening such that the flange of the fenestration unit overlaps the framing members of the rough opening;   (e) removing the release liner from the flashing to expose the remaining adhesive layer;   (f) installing water resistive barrier over the wall surrounding the fenestration unit such that the water resistive barrier is adhered to the remaining adhesive layer along the sides and uppermost portion of the fenestration unit and such that the water resistive barrier immediately below the lowermost portion of the fenestration unit is covered by the substrate of the flashing.   
   
   
       12 . A method for forming the flashing of  claim 2  comprising:
 (a) providing a flashing starting material comprising:
 (i) an elongated flexible substrate having two major surfaces and a first lateral edge and second lateral edge defining a width of the substrate therebetween, the substrate selected from the group consisting of nonwoven fabric, woven fabric, film, paper, sheet metal, and a combination thereof; 
 (ii) an adhesive layer adhered to one of the major surfaces of the substrate such that a first portion of the adhesive layer covers a portion of the substrate adjacent the first lateral edge of the substrate in the second portion of the adhesive layer extends beyond the first lateral edge; 
 (iii) a release liner covering the adhesive layer on the side opposite the substrate wherein the release liner is scored along the lateral edge of the substrate; 
   (b) folding the adhesive layer over the lateral edge of the substrate so that the adhesive layer is adhered to each of the major surfaces of the substrate.   
   
   
       13 . The method of  claim 12 , wherein the starting flashing material further comprises an intermediate release liner covering the second portion of the adhesive layer extending beyond the first lateral edge, the method further comprising removing the intermediate release liner prior to folding the adhesive layer over the lateral edge of the substrate.