Thermakraft Covertek 401 Roof Underlay

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Abbreviation: Appraisal number 943 (2021)
Amendment: 09/01/2023
Valid from: 1/12/2021

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

Description

Thermakraft 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 or light grey.

Scope

Thermakraft 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 for timber-framed buildings; 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 and NASH Standard Part 2 Wind Zones up to, and including Extra High.

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

Notes/comments

This Appraisal replaces BRANZ Appraisal No. 943 (2016).

This Appraisal has been amended to update the product name, company name, and technical literature.

View on Information Provider website Download this resource (PDF, 473KB)

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

This Appraisal replaces BRANZ Appraisal No. 943 (2016).

This Appraisal has been amended to update the product name, company name, and technical literature.

This resource is not cited by any other resources.