Covertek 401 Roof Underlay

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Abbreviation: Appraisal number 943 (2016)
Amendment: 13/02/2020
Valid from: 30/11/2016

Information provider: BRANZ Limited
Information type: BRANZ Appraisal
Format: PDF

Description

Covertek 401 Roof Underlay is a non fire retardant, synthetic self-supporting building underlay for use under roof claddings. The product consists of a micro-porous water resistant film ultrasonically bonded to two layers of non-woven spun-bonded polyolefin and is coloured white.

Scope

Covertek 401 Roof Underlay has been appraised for use as a roof underlay on buildings within the following scope:

the scope limitations of NZBC Acceptable Solution E2/AS1, Paragraph 1.1 with regards to building height and floor plan area; or,
the scope limitations of NASH Building Envelope Solutions, Paragraph 1.1 for steel framed buildings; and,
with masonry tile roof cladding; and,
with metal tile roof cladding; and,
with profiled metal roof cladding; and,
situated in NZS 3604 Wind Zones up to, and including Extra High.

For assistance with locating previous versions, please contact the information provider.

Notes/comments

This Appraisal has been amended to update fire clause references, update product name and to include NASH Building Envelope Solutions.

View on Information Provider website Download this resource (PDF, 840KB)

For assistance with locating previous versions, please contact the information provider.

This Appraisal has been amended to update fire clause references, update product name and to include NASH Building Envelope Solutions.

This resource is not cited by any other resources.