Decades of Proven Performance – Now CodeMark Certified

Decades of Proven Performance – Now CodeMark Certified

We are proud to announce that Volclay is now CodeMark certified, further strengthening its position as one of New Zealand’s most trusted waterproofing systems, giving specifiers, contractors, and building owners even greater confidence that Volclay not only performs in the field but also meets the industry’s most rigorous standards.

For over 50 years, Allco has been trusted across New Zealand as a supplier of high-performing waterproofing membranes. Our Volclay range for below-ground waterproofing is recognised as best-in-class and has become the go-to solution for vertical foundation walls, horizontal decks, and slab applications. Used in thousands of projects across New Zealand and more than 30 countries, Volclay consistently delivers durability, reliability, and long-term protection.

This reputation has been built on the unique self-sealing properties of sodium bentonite forming and its capacity to create a barrier against water ingress. Easy to install, resistant to harsh weather and with an outstanding performance track record, Volclay is trusted by architects, engineers, façade specialists, and contractors alike.

A Complete Roofing Range – Also CodeMark Certified

Alongside Volclay, Allco offers a full range of roofing membranes and systems designed to perform in New Zealand’s demanding conditions. Our portfolio includes our Casali Bitumen membranes our JM TPO membranes and Hydrotech hot melt system.

Each of these solutions is also CodeMark certified, reinforcing our commitment to durability, moisture protection, and safety at the highest level of compliance.

Unique to Allco’s range, the Hydrotech hot melt membrane is zero-degree fall certified, allowing for greater design flexibility, enabling architects and engineers to explore innovative roofing solutions without compromising compliance or performance.

Whether you’re looking for durability, energy efficiency, or design flexibility, Allco provides a system to suit every roof type and project scale.

Support at Every Step

We also know a membrane is only as effective as the system and expertise behind it. That’s why we provide comprehensive technical support, design assistance, and a nationwide network of approved applicators. From concept to completion, our team ensures every project is delivered with confidence and excellence.