Glossary

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W

Warm-edge technology
The use of low-conductance spacers to reduce heat transfer near the edge of insulated glazing.
Weatherstripping
A strip of resilient material for covering the joint between the window sash and frame in order to reduce air leaks and prevent water from entering the structure.
Weep hole
A small opening in a wall or window sill member through which water may drain to the building exterior.
Window
A glazed opening in an external wall of a building; an entire unit consisting of a frame sash and glazing, and any operable elements.
Window hardware
Various devices and mechanisms for the window including catches, fasteners and locks, hinges, pivots, lifts and pulls, pulleys and sash weights, sash balances, and stays.