What is a U value?

What is a U value? A U value is the measurement of heat loss (or heat flow) per m2 of surface area per 1 degrees C (Kelvin) temperature difference. The calculation measures the heat flow through a series of elements and includes internal and external resistance. An example is displayed below: In order to calculate…

Thermal Bridge Details

Thermal Bridge Details When carrying out a house design then to make it much easier for a SAP Calculation, it is really important to consider the Thermal Bridge Details. The default accredited details are now already incorporated into Part L 2013 so you really need to consider enhancements. The U value for a wall, roof…