WEATHERING

Attack on a material surface by atmospheric elements.

WEATHERSTRIP

A seal used around a window or door opening for protection against water and air infiltration.

WEEP

A small opening in a wall or window/door sill member through which water may drain to the outside of the structure.

WET GLAZING

A method of glazing in which the glass is secured into the sash/panel/frame by a glazing compound or sealant.

WINDOW

A unit assembly installed in walls of a building to provide light or vision, and optional ventilation.

WIRE GLASS

Rolled Glass having a layer of meshed or stranded wire completely imbedded as nearly as possible to the center of the thickness of the sheet before entering the rollers. This glass is obtainable as polished glass and patterned glass. Approved wired glass is used as fire retardant glazing as well as security glazing. It breaks more easily than unwired glass of the same thickness, but the wire restrains the fragments from falling out when broken.