Construction Details
LABC Registered Construction Details are 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: LABC Registered Construction Details 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: LABC Registered Construction Details should not be used for Approved Document L Volume 1 and 2 (2022 edition) or any subsequent amendments.
P5MCFF1 Separating wall and roof with insulation at rafter level
Build Up
Party Masonry Cavity Wall
Separating Wall and Roof
2 x Leaves Lightweight Blockwork Party (Separating) Wall
Cavity fully filled with insulation
150mm insulation (λ = 0.044W/mK) between the rafters
50mm (λ =0.022W/mK) below the rafters
This LABC Registered Construction Detail is...
View DetailsP4MCFF1 Separating wall and roof with insulation at ceiling level
Build Up
Masonry Party Wall
Separating Wall and Roof
2 x Leaves Lightweight Blockwork to Party (Separating) Wall
Cavity fully filled with insulation
400mm Insulation (λ = 0.044W/mK) at Ceiling Level
This LABC Registered Construction Detail is only valid for use with building work intended...
View DetailsE6MCFF2 Intermediate Floor Within a Dwelling
Build Up
External Masonry Cavity Wall
Masonry Outer Leaf (λ = 0.77)
Lightweight Concrete Block λ ≤ 0.60 W/mK
Full Fill Insulation
Intermediate Timber Floor Within Dwelling
Timber Joist
This LABC Registered Construction Detail is only valid for use with building work intended to follow the...
View DetailsE7MCFF2 Concrete intermediate floor between dwellings
Build Up
External Masonry Cavity Wall
Masonry Outer Leaf (λ = 0.77)
Lightweight Concrete Block λ ≤ 0.60 W/mK
Full Fill Insulation
Precast Concrete Floor Between Dwellings
This LABC Registered Construction Detail is only valid for use with building work intended to follow the guidance in the...
View DetailsE18MCFF5 Masonry separating wall
Build Up
External Masonry Cavity Wall
Masonry Outer Leaf (λ = 0.77)
100mm Lightweight Concrete Block λ ≤ 0.60 W/mK Inner Leaf
Full Fill Insulation
2 x Dense Blockwork Leaves to Party (Separating) Wall
This LABC Registered Construction Detail is only valid for use with building work intended...
View DetailsE18MCFF2 Masonry separating wall
Build Up
External Masonry Cavity Wall
Masonry Outer Leaf (λ = 0.77)
100mm Lightweight Concrete Block λ ≤ 0.60 W/mK Inner Leaf
Full Fill Insulation
2 x Lightweight Blockwork Leaves to Party (Separating) Wall
This LABC Registered Construction Detail is only valid for use with building work...
View DetailsE17MCFF2 Inverted Corner
Build Up
External Masonry Cavity Wall
Masonry Outer Leaf (λ = 0.77)
Lightweight Concrete Block λ ≤ 0.60 W/mK
Full Fill Insulation
Inverted Corner
This LABC Registered Construction Detail is only valid for use with building work intended to follow the guidance in the following:
England
App... View DetailsE16MCFF2 Normal Corner
Build Up
External Masonry Cavity Wall
Masonry Outer Leaf (λ = 0.77)
Lightweight Concrete Block λ ≤ 0.60 W/mK
Full Fill Insulation
Normal Corner
This LABC Registered Construction Detail is only valid for use with building work intended to follow the guidance in the following:
England
Appro... View DetailsE13MCFF2 Pitched roof gable, between and under rafter insulation
Build Up
External Masonry Cavity Wall
Masonry Outer Leaf (λ = 0.77)
Lightweight Concrete Block λ ≤ 0.60 W/mK
Full Fill Insulation
Pitched Roof Gable
150mm insulation (0.022W/Mk) between rafters
50mm insulation (0.022W/Mk) beneath rafters
This LABC Registered Construction Detail is only...
View DetailsE12MCFF2 Pitched roof gable, insulation at ceiling level
Build Up
External Masonry Cavity Wall
Masonry Outer Leaf (λ = 0.77)
Lightweight Concrete Block λ ≤ 0.60 W/mK
Full Fill Insulation
Pitched Roof Gable
400mm insulation (0.044W/mK) at Ceiling Level
Ventilated Loft
This LABC Registered Construction Detail is only valid for use with building...
View Details