GlassCatalogue_LowRes

Glossary Of Terms / W-Z
WERS
Window Efficiency Rating System
Wet seal
Application of an elastomeric sealant between the glass and frame or glass to form
a weather-tight seal. Similar to silicone seal.
WHP laminate
An automotive quality laminated safety glass with high penetration resistance and high
light transmission (Windscreen High Performance).
Wind load
The pressure acting on an external surface of a building caused by the direct action
of the wind.
Window rating
The level of performance for strength, weatherproofing, or insulation of windows and doors
as determined by test. Window ratings for housing are expressed in wind classification
terms, and window ratings for buildings other than housing are expressed in design wind
pressure terms.
Wind zones
Those areas identified by local building authorities or specifying authorities as subject to
specific ranges of wind pressure and loads.
Wired glass
Glass having a layer of meshed or stranded wire embedded near to the centre of thickness
of the panel. This glass is available as polished glass (one or both surfaces polished to
make it clear) and patterned glass. Refer to Pyroshield.
Work life
The time during which a curing sealant (usually of two compounds) remains suitable for
use after being mixed with a catalyst. Also known as Pot Life.
Xerogel
A type of transparent insulation material similar to aerogel but simpler to manufacture. It
has both a higher visible transmittance and higher thermal conductivity than aerogel.
Zenith
The point on the skydome directly overhead, a 90 degree solar altitude.
256 Product Catalogue For Glass Processors & IG Manufacturers