Door and window sill gasket

1 . A door and window sill gasket adapted to seal the frame of doors and windows against moisture and/or air and insects, the gasket comprising:

a water resistant compressible material having an upper surface, a lower surface, and at least one edge,

the lower surface of the compressible material being attached to an adhesively-coated top face of a rubberized asphalt sealing membrane providing an air/water infiltration barrier and having an adhesively-coated lower face covered by a removable release liner, the membrane including a flexible, covered flange extending outwardly from the at least one edge of the compressible material.

2 . The gasket of claim 1 , wherein the flexible covered membrane includes a silicon release liner removably attached to the top face of the membrane.

3 . The gasket of claim 1 , wherein the flexible covered membrane includes a drain material attached to the top face of the membrane.

4 . The gasket of claim 1 , wherein the upper surface of the compressible material is downwardly sloped towards the flange.

5 . The gasket of claim 1 , wherein the membrane is highly elastic and has an elongation of up to 500 percent.

6 . The gasket of claim 1 , wherein the compressible material is comprised of closed cell polyethylene foam.

7 . The gasket of claim 1 , wherein a rear edge of the compressible material is provided with a backdam.

8 . The gasket of claim 3 , wherein the drain material is formed by a flexible, plastic sheet provided with a plurality of raised dimples forming a series of flow paths along the sheet.

9 . A method of providing a sill gasket at a bottom of door or window framework having a horizontal bottom member located between a pair of spaced apart vertical side members, the method comprising the steps of:

providing a water resistant compressible material having an upper surface, a lower surface, and at least one edge, the lower surface of the compressible material being attached to an adhesively-coated top face of a rubberized asphalt sealing membrane providing an air/water infiltration barrier and having an adhesively-coated lower face covered by a removable release liner, the membrane including a flexible, covered flange extending outwardly from the at least one edge of the compressible material;

removing the release liner from the lower face of the membrane and adhesively securing the membrane with the attached compressible material horizontally across an entire length of the bottom member such that opposed ends of the membrane extend vertically along and are adhesively attached to the inside surfaces of the door jam structural members with the flange of the membrane projecting forwardly from the subfloor;

folding and adhesively applying the flange of the membrane to respective front surfaces of the bottom member and the spaced apart side members; and

securing the threshold to at least the upper surface of the compressible material along the subfloor.

10 . A method of providing a sill gasket to create positive flow of water leaked into a window away therefrom and to prevent moisture infiltration between a window frame and a framework having a top member, a bottom member and side members, each having a front surface defining a window opening, the method comprising the steps of:

providing a water resistant, compressible material having an upper surface, a lower surface, and at least one edge, the upper surface sloping downwardly towards the at least one edge, the lower surface of the compressible material being attached to an adhesively-coated top face of a rubberized asphalt sealing membrane providing an air/water infiltration barrier and having an adhesively-coated lower face covered by a removable release liner, the membrane including a flexible, covered flange extending outwardly from the at least one edge of the and having a drain material attached to the top face of the membrane;

removing the release liner from the lower face of the membrane and adhesively securing the membrane with the attached compressible material and one portion of the flange with the drain material along inner surfaces of the bottom and side members of the window opening framework with a remaining portion of the flange with the drain material extending forwardly from the bottom member of the window opening framework;

folding and adhesively applying the remaining portion of the flange with the drain material to the front surface of the bottom member of the window opening framework;

setting the window frame in the window opening on top of the drain material and fastening the window frame to the respective front surfaces of the top, bottom and side members of the framework; and

applying a sealing tape over peripheral edges of the window frame along the top and side members of the framework.

11 . A method of providing a sill gasket at bottom of door or window framework having a horizontal bottom member located between a pair of spaced apart vertical side members, the method comprising the steps of:

providing a water resistant compressible material having an upper surface, a lower surface, and at least one edge, the lower surface of the compressible material being attached to an adhesively-coated top face of a rubberized asphalt sealing membrane providing an air/water infiltration barrier and having an adhesively-coated lower face covered by a removable release liner, the membrane including a flexible, covered flange extending outwardly from the at least one edge of the compressible material;

removing the release liner from the lower face of the membrane and adhesively securing the membrane with the attached compressible material horizontally across an entire length of the bottom member such that opposed ends of the membrane extend vertically along and are adhesively attached to the inside surfaces of the spaced apart side members with at least a portion of the covered flange of the membrane projecting forwardly from the bottom member; and

folding and adhesively applying the flange of the membrane to respective front surfaces of the bottom member and the spaced apart side members.