Wall plate

The piece of lumber placed at the top and/or bottom of a wall formed with studs. The sole or lower plate supports the wall and the upper structure of a building. The upper plate us used to support and retain the rafters.

Wallpaper

A paper made with a decorative surface that is applied to a wall surface to improve appearance of a room.

Weather stripping

The material applied along the edge of a door or window that is usually flexible and capable of spanning a gap between a door edge and the door casing. The strip of material prevents the entry of air.

Weatherhood

The hood or deflector on a vent opening that is intended to prevent rain water and undesired unconditioned air entry.

Weir

A barrier across a stream of liquid that is used to divert or measure flow per unit of time.