BEIS IWI and moisture closed systems clarification
BEIS has issued clarification regarding Internal Wall Insulation and moisture closed systems.
The BEIS Retrofit Internal Wall Insulation, Best Practice guidance does not prohibit the use of moisture closed internal wall insulation systems on existing solid walls.
The insulation choice and moisture strategy should be based upon a multitude of factors, not least a
robust retrofit assessment, and a good understanding of moisture risks in internal wall insulation.
For further details, please download the guide below:
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