6.8.26 DPC
Materials for damp proofing shall adequately resist the passage of moisture into the building.
The following are acceptable for use as DPCs:
- bitumen to BS 6398
- polyethylene to BS 6515 (not to be used in the chimney stack above roof level)
- proprietary materials assessed in accordance with Technical Requirement R3.
Last updated: 2nd January 2024