H1 Done. We’ve got your insulation solutions covered. 

Research shows that damp, mouldy, poorly ventilated homes affect the respiratory health of many New Zealanders.

To help address these issues, MBIE has introduced the new 5th edition of H1/AS1 and H1/VM1 for housing and H1/AS2 or H1/VM2 for buildings greater than 300 m². This means significantly more insulation will be needed in the ceiling, walls and floors of new buildings from 1 May 2023.

Learn more about the H1 Building Code changes below or download our H1 FAQs.

What's New

Why is notching recommended

Why two layers of R3.6 is not recommended

How to avoid an unnecessary raised heel truss

Design Navigator and the BRANZ Home Insulation Guide

New Secondary Insulation Layer Wall Solution

We have developed a Secondary Insulation Layer Wall Solution, which enables the delivery of a 90mm timber frame wall, with a secondary insulation between 45mm thickness internal battens.

Learn More

Introducing our new product range, Pink® Superbatts® insulation.

Specifically designed to meet the H1 Building Code changes, our Pink® Superbatts® are extra wide to bridge thermal gaps and maximise thermal performance.

Learn more

Frequently Asked Questions - H1 Changes