Tom, one of our technicians, completed the L1B SAP Calculation for this proposed extension in Stevenage which had excessive glazing (>25% of the floor area)
THE PROCESS
UK Building Compliance assisted with the specification of the Glazing U-Value, Thermal Insulation and heating system
This was to ensure that the notional dwelling was more efficient than the proposed dwelling which is a requirement in order to demonstrate Part L1B compliance
THE RESULT
Compliant
Reduction in Dwelling Emission Rating (DER) and Dwelling Fabric Energy Efficiency (DFEE) beyond Notional Standards
Compliant with Part L Building Regulation Standards
The Predicted EPC showed a rating of high C for energy efficiency and mid C for environmental impact - good for a property of this age
