AS/NZS 2904: Damp-proof courses and flashings
AS/NZS 2904 is the Australian standard for DPC and flashing materials. Covers 5 material classes. Called up by NCC ABCB Housing Provisions Part 5.7.
Ask Chalkline about this →AS/NZS 2904 is the Australian and New Zealand standard for damp-proof course (DPC) and flashing materials. It specifies sheet membrane, strip, and collar materials by composition, thickness, mass per unit area, and impact resistance. Current edition AS/NZS 2904:1995, incorporating Amendment 1 (1998) and Amendment 2 (2013); reaffirmed R2013 (verified 2026-05-13, Standards Australia).
Also known as: AS 2904.
Category: Masonry / waterproofing.
Material classes
| Clause | Class |
|---|---|
| 7.2 | Metals (lead, copper, aluminium) |
| 7.3 | Bitumen-coated metals |
| 7.4 | Polyethylene-coated metals |
| 7.5 | Bitumen-impregnated materials |
| 7.6 | Embossed black polyethylene film |
Excludes vapour barriers, mortar-type DPCs, and liquid-applied membranes (those sit under AS 4654 and manufacturer specifications).
NCC reference
Called up by ABCB Housing Provisions Part 5.7 (Weatherproofing of masonry) as the materials spec for DPCs in Class 1 and 10 buildings. Part 5.7 references clauses 7.4, 7.5, and 7.6 (verified 2026-05-13, ABCB Housing Provisions 5.7). NCC Volume Two Part H2 itself has no national DTS citation; the SA H2D4(3) variation cites AS/NZS 2904 only to prohibit clauses 7.2 and 7.3 metals in South Australia. Slip joints use the same material classes where the membrane meets the relevant clause.
Related
- Damp-proof course (glossary)
- Slip joint (glossary)
- Flashing (glossary)
- AS 3700 Masonry structures (compliance)
See also
- ABCB Housing Provisions (glossary)
- Cavity masonry (glossary)
- Weep hole (glossary)
- Articulation joint (glossary)
Last updated: 2026-05-13. Verified: 2026-05-13.