Energy performance calculations required for Building Control approval and final certification.
SAP Calculations & EPCs (Part L)
On-site air permeability testing to demonstrate compliance with Part L.
Airtightness Testing (Part L)
Measured airflow testing to confirm ventilation systems meet Part F requirements.
Ventilation Flow Rate Testing (Part F)
Calculation demonstrating potable water use does not exceed 125 litres per person per day.
Water Efficiency Calculations (Part G)
Targeted report required where large areas of glazing are proposed.
Highly Glazed Extension Reports (Part L)
Overheating risk assessments undertaken using simplified or TM59 calculations, as required by Part O.
Overheating Risk Assessments (Part O)
