Glossary of building terms: W

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Wall plate (Timber Roof Construction) – A strip of timber, laid on top of walls to level the underside of rafters and trusses.

Wall tie (Masonry) – A mechanical fastener, which connects leaves of masonry to each other or to other materials.

Warping– Any distortion in a material.

Waste pipe and vent– Plumbing plastic pipe that carries waste water to the municipal sewage system.

Water closet (WC)– Another name for toilet.

Waterproof/waterproofing – The process of rendering a building element or building totally resistant to the ingress of any moisture.

Water-repellent preservative– A liquid applied to wood to give the wood water repellent properties

Water table– The location of the underground water, and the vertical distance from the surface of the earth to this underground water.

Weatherstrip– Narrow sections of thin metal or other material installed to prevent the infiltration of air and moisture around windows and doors.

Web (Timber Roof Construction) – A member that joins the top and bottom chords to form triangular patterns that give truss action.

Web (Timber Roof Structures) – member that joins the top and bottom chords to create triangular patterns that give truss action.

Weep holes– Small holes in storm window frames that allow moisture to escape.

Window frame– The stationary part of a window unit; window sash fits into the window frame.

Window sash– The operating or movable part of a window; the sash is made of window panes and their  border.

Wire nut– A plastic or ceramic device used to connect bare electrical wires together.

Workability (Cement plaster) – The quality of mix in respect of all the properties affecting its behaviour during application and subsequent working. The operative’s opinion of workability is influenced by the flow properties, the cohesiveness of the mix and its retentivity of moisture against the substrates.