Extension Calculations – Colwich

THE BRIEF

  • UK Building Compliance completed an L1B Extension Calculation on this proposed extension in Colwich
  • To achieve compliance, the proposed extension must improve the performance of the dwelling
Extension Calculations - Colwich

THE PROCESS

  • Exceeding targets in energy and fabric efficiency required our STROMA accredited consultants to advise the following:  
  • Specifying a low U-Value in all proposed and upgraded elements of the property
  • Recommending the installation of an air source heat pump
  • Further suggestions resulted in an efficient MVHR System being implemented

THE RESULTs

  • SAP RESULTS

≤ 32.31

Notional Dwelling Emission Rate (DER)

≤ 97.08

Notional Dwelling Fabric Energy Efficiency (DFEE)

29.67

Proposed Dwelling Emission Rate (DER)

84.08

Proposed Dwelling Fabric Energy Efficiency (DFEE)


PASS


PASS

  • Compliant
  • The proposed dwelling is more efficient than the notional dwelling therefore compliant with the Part L Building Regulations 

Please refer to our Myth Busters for SAP Calculations here for common misconceptions and see our SAP Calculations page here for more information

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