Planning Condition: 19% Reduction – SAP Calculations, Croydon

THE BRIEF

  • We were instructed to carry out L1A SAP Calculations on this block of flats in Croydon
  • The Planning Condition required a 19% DER (Dwelling Emissions Rate) Reduction on top of baseline Part L Standards
Planning Condition: 19% Reduction - SAP Calculations, Croydon

THE PROCESS

  • UKBC assisted with the specification of the Glazing, U-Values, Insulation, Heating Systems and Thermal Bridging
  • Creative solutions were required in order to achieve the 19% DER Reduction retrospectively
  • Our assessors recommended additional technologies such as flue gas heat recovery systems, waste water recovery systems and air source heat pumps in order to achieve this Reduction

THE RESULT

  • SAP RESULTS

≤ 23.63

Target Emission Rate (TER)

≤ 55.94

Target Fabric Energy Efficiency (TFEE)

18.80

Dwelling Emission Rate (DER)

49.12

Dwelling Fabric Energy Efficiency (DFEE)

PASS

PASS

  • Compliant
  • Compliant with Part L Building Regulation Standards
  • Planning Condition of 19% Additional Reduction in DER met:
  • 20.44% Improvement in DER
  • 12.19% Improvement in DFEE 
Planning Condition: 19% Reduction - SAP Calculations, Croydon

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