Selecting Steel Walls

Type of Construction External Treatment Minimum wall width Robust Detail
Loadbearing
light steel frame
100mm Masonry only 263mm E-WS-1
100mm Masonry or
weatherboarding
313mm E-WS-4
Reinforced
concrete frame
100mm Masonry only
Infill glazing units
250mm E-WS-2
100mm Masonry, or glazing or cladding 290mm E-WS-5
Offsite manufactured volumetric 100mm Masonry only 276mm E-WS-3
KEY B.Regs
+ 3 dB
+ 5 dB

Thickness quoted is the minimum possible to comply with the full Robust Details specification including finishes.

A skim coat would be in addition.

Deeper studs will increase this dimension.

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for Floor/Wall Combinations
and Code for Sustainable Homes

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for Selecting Your Robust Details