Skip to main content

The requirements for cavity insulation to prevent toxic fumes passing through to any part of the building.

First published:
3 April 2017
Last updated:


Building regulations guidance: part D (toxic substances) , file type: PDF, file size: 282 KB

282 KB
If you need a more accessible version of this document please email Please tell us the format you need. If you use assistive technology please tell us what this is.