GLOSSARY-W

Weather-strip

A strip of resilient material for covering the joint between the window and door sash and frame in order to reduce air leaks and prevent water from entering the structure.

Weather-tight

Sealed to prevent entry of air and precipitation into the structure.

Weep-hole

Small holes drilled along the bottom edge of storm sash or combination storm-screens to permit moisture condensation or wind-driven rain to drain away from the sill to the outdoors.

Wind Bourne debris region

Areas within hurricane-prone regions within one mile of the coast where the basic wind speed is 110mph or greater, or where the basic wind speed is equal to or greater than 120mph, or Hawaii.

Wind-load

Force exerted on a surface by moving air.

Window

A glazed opening in an external wall; an entire unit consisting of a frame, sash and glazing, and any operable elements.

Window bar

See: Muntin.

Window frame

The fixed frame of a window, which holds the sash or casement as well as hardware.

Window hardware

Various devices and mechanisms for the window including: catches, cords and chains, fasteners and locks, hinges and pivots, lifts and pulls, pulleys and sash weights, sash balances, and stays.

Windowpane divider

A short bar used to separate glass in a sash into multiple lights. Also called a muntin or a grille.

Window unit

A complete window with sash and frame.

Wind pressure

The pressure produced by stopping the wind velocity; the main cause of air infiltration.