Water intrusion prevention method and apparatus

摘要

A method and device are presented that creates a channel adjacent a nailing flange of a window in between the window and the rough opening that receives the window. The channel is created by establishing a barrier that prevents foam insulation inserted into the space between the window and the rough opening from reaching the nailing flange. The channel then ensures proper drainage of water that enters the window cavity down to the window sill. A gasket is presented that can be attached to the window or the rough opening to create the barrier. Alternatively, a disintegrating object or a wicking object can be used to impede the flow of insulation foam and to create the appropriate channel. The present invention is equally applicable to doors or other framed objects received into the exterior shell of a building.

主权项

1. A window unit for insertion into a rough opening of a building, the window unit having an interior surface and an exterior surface, the window unit comprising:
a) a glass pane; b) a window frame having side walls surrounding the glass pane; c) a nailing flange attached to a first plurality of side walls proximal to the exterior surface of the window; and d) a barrier wall attached to a second plurality of side walls in a position more proximal to the interior surface than the nailing flange, the barrier wall having:
i) a base attached to the second plurality of side walls;ii) an extension attached to the base, wherein the extension is generally straight extending away from the base by at least 0.20 inches when unbent, further wherein the extension has flexibility to allow the extension to bend during insertion into the rough opening of the building.