water resistance test pressure
the air pressure at which a window will resist water infiltration during a water test which consists of water spray and air pressure. Usually expressed in psf, e.g., "the TRACO TR-5000 has a water resistance test pressure of 7.5 psf."
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walkway
a glazed enclosure typically used to connect two existing buildings.
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WDMA
Window & Door Manufacturers Association – formerly the NWWDA – National Wood Window and Door Association
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wedge glazing
a flexible, continuous gasket that ensures a high compression seal between the glass and glazing bead by applying pressure.
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weep slot
an opening in a window sill and/or sash rail to allow water to drain to the exterior.
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wind load
the amount of pressure exerted by the wind on a window or door generally expressed in pounds per square foot (psf). Not to be confused with a project’s location "Basic Wind Speed", which is usually expressed in miles per hour (mph).
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window size
always expressed as width first, then height.
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window style
the description of the way a window operates, e.g., hung, sliding, casement, etc.
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wire glass
1/4" clear or obscure glass having a layer of diamond or square pattern wire mesh embedded in the glass lite. It cannot be tempered and is not an approved safety glazing material.
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