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Certificate 99/3635 Du Pont Engineering Products s.ar.l. Tyvek Universal underlays in energy-efficient non ventilated pitched roof systems. Fourth issue

Publication Year

2002

Document Status

Withdrawn

Abstract

A roof tile underlay system for tiled or slated pitched roofs.

Document History

Revoked - Jan 2004.

Publisher Information

British Board of Agrément

The British Board of Agrément have been providing authoritative and independent information on the performance of building products for over 40 years. The certificates they produce contain data on durability, installation and compliance with Building Regulations.

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