Thermal Bridging Analysis (Psi Values)

Minimising the heat loss from a building’s non-linear junctions has a significant impact on reducing its overall heating demand. Thermal Bridge Calculations are therefore becoming a critical component in the energy modelling undertaken for Building Regulations and overall fabric compliance. Accurate psi values are also necessary on many schemes in order to achieve the Zero Carbon and Passivhaus standards.

SRE undertakes detailed Thermal Bridge Calculations (using Psi-therm and Therm software) to determine specific psi values for all standard and non-standard junctions. As required by Building Regulations, the psi values can be signed off by a competent person and used within the SAP and SBEM software.