PSI Value Calculation (Thermal Bridging)
PSI-value (thermal bridging) calculations to quantify junction losses and support compliant SAP inputs and fabric specifications.
Thermal bridging calculations for retrofit junctions where performance claims depend on credible PSI values—not generic defaults.
- Junction-specific PSI values documented for SAP and design reviews
- Coordination with insulation interfaces and airtightness strategy
- Outputs usable by coordinators and designers in one evidence trail
Next steps
See how Retrofit OS fits your current programmes and scheme mix.