BU670 Specifying windows and doors under H1 (2022)
Product Description
This bulletin guides architects and designers in understanding and specifying windows and doors that comply with the 5th edition of H1/ AS1 and H1/VM1. The 5th edition amendment 1 can be used until 26 November 2026. From 27 November 2026, anyone using H1/AS1 or H1/VM1 to demonstrate compliance with the Building Code must use the 6th edition.