Membrane roofing

Specify robust, code-compliant membrane roofing. Our flat roof waterproofing options include bitumen, TPO, hot melt and asphalt membranes, suited to New Zealand’s diverse conditions. Contact our technical team for help selecting the right membrane for your project.

TPO Details & Install Guide

Our TPO Details & Install Guide was designed as a reference and onsite consultation tool. It includes our standard TPO details, drawings, technical information, and step-by-step installation guidance with supporting images. If you would like to request a copy, please email info@allco.co.nz