Technical Support

The calculation is as follows: U-value = Thermal conductivity / thickness (where the thickness is measured in meters). When you are comparing U-values, a lower number is better.

Passive design uses layout, fabric and form to reduce or remove mechanical cooling, heating, ventilation and lighting demand. Examples of passive design include optimising spatial planning and orientation to control solar gains and maximise daylighting, manipulating the building form and fabric to facilitate natural ventilation strategies and making effective use of thermal mass to help reduce peak internal temperatures.

Install Processing information

A Condensation Risk Analysis evaluates the likelihood of interstitial condensation in your roof or wall construction.