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  4. Approved Documents and technical guidance Wales
  5. Wales Approved Document Part C: Site preparation and resistance to contaminants and moisture

Wales Approved Document 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.

Part C

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

2004 edition incorporating 2010 amendments

Download now

Additional Guidance

Amendments to Approved Documents Part A, B and C Wales

 

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

Part C

Building Regulations guidance

Browse the full suite of Approved Documents for England and Wales plus additional guidance, our resource library, statutory and archive documents.
Find out more

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