#u-values

U-Values – What are they and why are they important?

U-Values are a measure of thermal transmittance The requirement for a building to have a low U-value is set out in the Building Regulations. The regulations specify that the U-value of a building should be less than 0.25 w/m2K. The U-values for different building elements are determined by the types of insulation used. In addition, the U-values of building fabric have been standardised through…

New Fact Sheet on #Passivhaus U-values…

CLICK HERE for Fact Sheet on Passivhaus U-values

Check out the FACT SHEETS section of website for further information all areas of Passivhaus design and construction

a u-value is a measure of heat loss in a building element

the higher the u-value, the faster heat transfers through the material