Damp-proof membranes

Explore our range of damp-proof membranes (DPMs) and vapour barriers – solutions for concrete floor damp proofing and under-slab moisture control, all tested and compliant for New Zealand conditions. Contact our technical advisory team to select the right systems for your project

Bitumen DPM

by Casali

Self-adhesive or torch-applied bitumen membranes for low-risk, non‑hydrostatic applications. Single-layer vapour resistance for walls, slabs and transition zones below ground, with root-resistant options available.

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Polythene DPM

by Allco

A durable polyethylene damp-proof membrane for low-risk, non‑hydrostatic conditions. This high-strength DPM is tougher than standard polyethylene, available in two thicknesses and offers effective vapour resistance beneath slabs and ground beams.

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