Rate of heat flow through the complete heat barrier, from room air to outside air. The lower the U-value, the better the insulating value. The reciprocal of R-value. [top]

Invisible rays of solar radiation at the short-wavelength voilet end of the spectrum. Ultraviolet rays can cause fading of paint finishes, carpets, and fabrics as well as deterioration of some materials. [top]

See Sealed Unit. [top]

Urethane coating is a two component elastomeric coating. It provides weather resistance, offers abrasion resistance, chemical resistance and color retention in severe conditions.  [top]