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Building Regulations Part C: Site preparation and resistance to contaminants and moisture

Welcome to the technical guidance page for Part C of the building regulations, covering resistance to contamination and control of moisture.

The approved document can be downloaded below, with additional guidance at the foot of this page.

Approved Document C: Site preparation and resistance to contaminants and moisture

Additional Guidance:

 

LABC Technical Guidance:

Technical guide: Guidance on design and construction of basements

LABC Member Document:

Member Document: BBA position statement on installing cavity wall insulation