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Part C (Resistance to contaminants and moisture)

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These Approved Documents have been amended because of the introduction of the revised Approved Document supporting regulation 7 (Materials and Workmanship).
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Technical guidance on Schedule 1 of the Building Regulations about preparing sites and resistance to contaminants and moisture.

The document also mentions other standards that can be used for compliances purposes.

2017 changes

Please note the amendment slip to Approved Document C which comes into effect from 1 September 2017.

Archived versions of Approved Document C are available at the National Archives (external link).