DuPont Tyvek Breathable Self-supporting Fire Retardant Synthetic Roof Underlays
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- Ministry of Business, Innovation and Employment
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- Product Certificate (CodeMark)
DuPontTM Tyvek® Breathable Self-Supporting Fire Retardant Synthetic Roof Underlays are synthetic building underlays for use under roof claddings.
The underlays are spun bonded high-density polyethylene, laminated to a non-woven polypropylene sheet. The product is coloured grey on the top face and white on the bottom face.
DuPontTM Tyvek® Supro (2506B) DuPontTM Tyvek® Supro Plus (2506B) DuPontTM Tyvek® Pro (2508B)
For use under roof claddings on timber-framed and steel-framed buildings with a roof pirtch of 3 degrees or more to limit wind entry and assist with moisture management.
Scope limitations are described in the DuPont Tyvek Supro/Suproplus/Pro Installation Guide - New Zealand, version 28 Feb -17.
Must be separated from heat sources.