P4PCFF2 Roof, Insulation At Ceiling Level
Build Up
Masonry Party Wall
Separating Wall and Roof
2 x 100mm Aircrete Block (0.19W/m²K) Party (Separating) Wall
Max. 100mm cavity fully filled with insulation (0.044W/mK) density up to 40kg/ m3
400mm Insulation (λ = 0.044W/mK) at Ceiling Level
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
p4pcff2_cad_file.dwg69.1 KB
Registered Detail certificates
p4pcff2_certificate.pdf639.99 KB
rcd_worksheet_173.pdf340.6 KB