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.
P5PCFF1 Roof, Insulation At Rafter Level
Build Up
Party Masonry Cavity Wall
Separating Wall and Roof
2 x 100mm Aircrete Block (0.15W/m²K) Party (Separating) Wall
100mm cavity fully filled with insulation (0.044W/mK) density up to 40kg/m3
150mm insulation (λ = 0.044W/mK) between the rafters
50mm (λ =0.022W/mK) below the rafters
Th...
View DetailsP4PCFF1 Roof, Insulation At Ceiling Level
Build Up
Masonry Party Wall
Separating Wall and Roof
2 x 100mm Aircrete Block (0.15W/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...
View DetailsP1PCFF5 In-Situ Concrete Ground Bearing Floor, Insulation Below Slab
Build Up
Masonry Party Wall
2 x 100mm Aircrete Block (0.15W/m²K) Party (Separating) Wall
100mm cavity fully filled with insulation (0.044W/mK)
Ground Bearing Concrete Floor
Insulation Below Floor Slab
This LABC Registered Construction Detail is only valid for use with building work intended...
View DetailsP1PCFF3 Suspended Concrete Floor, Insulation Below Slab
Build Up
Masonry Party Wall
2 x 100mm Aircrete Block (0.15W/m²K) Party (Separating) Wall
100mm cavity fully filled with insulation (0.044W/mK)
150mm Cast In-Situ Suspended Slab
Insulation Below Floor Slab
This LABC Registered Construction Detail is only valid for use with building work...
View DetailsP1PCFF1 Suspended Beam And Block Floor, Insulation Above Slab
Build Up
Masonry Party Wall
2 x 100mm Aircrete Block (0.15W/m²K) Party (Separating) Wall
100mm cavity fully filled with insulation (0.044W/mK)
150mm Beam & Aircrete Block Infill
75mm Screed
Insulation Above Precast Beam and Block Floor
This LABC Registered Construction Detail is only valid...
View DetailsE18MCFF11 Party Wall Between Dwellings
Build Up
External Masonry Cavity Wall
Masonry Outer Leaf (λ = 0.77)
100mm Aircrete Block Inner Leaf (λ = 0.15 W/mK)
Full Fill Insulation
2 x 100mm Aircrete Block (0.19W/m²K) Party (Separating) Wall
100mm cavity fully filled with insulation (0.044W/Mk)
This LABC Registered Construction...
View DetailsE18MCFF8 Party Wall Between Dwellings
Build Up
External Masonry Cavity Wall
Masonry Outer Leaf (λ = 0.77)
100mm Aircrete Block Inner Leaf (λ = 0.15 W/mK)
Full Fill Insulation
2 x 100mm Aircrete Block (0.15W/m²K) Party (Separating) Wall
100mm cavity fully filled with insulation (0.044W/mK)
This LABC Registered Construction...
View DetailsE17MCFF5 Inverted Corner
Build Up
External Masonry Cavity Wall
Masonry Outer Leaf (λ = 0.77)
100mm Aircrete Block Inner Leaf (λ = 0.15 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:
Engla...
View DetailsE16MCFF5 Normal Corner
Build Up
External Masonry Cavity Wall
Masonry Outer Leaf (λ = 0.77)
100mm Aircrete Block Inner Leaf (λ = 0.15 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...
View DetailsE13MCFF5 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 = 0.15 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...
View Details