by George Booth | Sep 29, 2023 | Last Articles
Solar Gain Coefficient (g-value) In the context of windows and glazing, the g-value, also known as the solar heat gain coefficient (SHGC), represents the fraction of solar radiation (both directly transmitted and absorbed and then reradiated) that enters a building...
by George Booth | Sep 29, 2023 | Last Articles
A “U-value” is a measure of the rate of heat flow through an element. It is expressed in W/m2k, and shows the amount of heat lost in watts (W) per square metre of material (for example wall, roof, floor etc.) When the temperature (k) outside is at least one degree...
