The Key Changes in Part L 2013 – Domestic

  • New Notional Building in SAP
  • Allows simple route to compliance
  • Start at the Notional Building values not at the Limiting Fabric U-values

Example 1: End Terrace 76m2

example 1

Example 1: With targets…

example 1 cont.

Effect of TFEE Flexibility: Triple Glazing

triple glazing
This shows one way that Part L 2013 allows flexibility of design. There are many other options available should you not wish to follow the exact ‘Fabric First’ specification of the notional building, as outlined on page 25 of the new Part L1A 2013 approved document, Section 5: Model designs.