E13MCFF6 Pitched Roof, Gable, Insulation At Rafter Level

Build Up

External Masonry Cavity Wall

Masonry Outer Leaf (λ = 0.77)

100mm Aircrete Block Inner Leaf (λ = 0.19 W/mK)

Full Fill Insulation

Pitched Roof Gable

150mm insulation (0.044W/mK) between rafters

50mm insulation (0.022W/mK) beneath rafters

Unventilated Rafter Void

 

This LABC Registered Construction Detail is only valid for use with building work intended to follow the guidance in the following:

England

  • Approved Document L1A and L2A (2013 edition incorporating amendments up to and including 2016)
  • Approved Document L1B (2010 edition incorporating amendments up to and including 2018)
  • Approved Document L2B (2010 edition incorporating amendments up to and including 2016)

NOTE: This LABC Registered Construction Detail should not be used for Approved Document L Volume 1 and 2 (2021 edition) or any subsequent amendments.

Wales

  • Approved Document L1A, L1B, L2A and L2B (2014 edition incorporating amendments up to and including 2016)

NOTE: This LABC Registered Construction Detail should not be used for Approved Document L Volume 1 and 2 (2022 edition) or any subsequent amendments.

 

Architect downloads

Registered Detail certificates