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Concrete Underlay Compliance

November 17, 2019

The HIA Technical Committee has recently been advised that some concrete underlay’s which are being used under residential concrete raft slabs, do not meet the performance requirements set out in the Building Code of Australia 2019 Clause SA 3.2.2.6 damp proofing membrane. Clause 5.3.3.3 of AS 2870 requires the damp proof membrane to have 0.2mm high impact resistance together with the manufacturers or distributors name, trademark or code.

For further information please contact your Technical Adviser on 1300 650 620.