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Thermakraft 220 synthetic wall underlay

Abbreviation
Appraisal number 912
Amendment
Amended 09/09/2019
Valid from
22/04/2016

Information provider
BRANZ Limited
Information type
BRANZ Appraisal
Format
PDF

Description

Thermakraft 220 Synthetic Underlay is a flexible synthetic wall underlay for use under direct fixed and cavity wall claddings on timber and steel framed buildings. The product is manufactured from non-woven, spun bonded polypropylene and is coloured white.

 

Scope

Flexible Wall Underlay

Thermakraft 220 Synthetic Underlay has been appraised for use as a flexible wall underlay for timber and steel framed 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; and,
  • with direct fixed absorbent wall claddings; or,
  • with direct fixed non-metallic, non-absorbent wall claddings; or,
  • with absorbent and non-absorbent wall claddings installed over an 18 mm minimum drained cavity; or,
  • with masonry veneer in accordance with NZBC Acceptable Solution E2/AS1 for timber framed buildings or to a specific design for steel framed buildings; and,
  • situated in NZS 3604 Wind Zones up to and including Very High.

Use over Rigid Wall Underlay

Thermakraft 220 Synthetic Underlay has been appraised for use as a flexible wall underlay over rigid wall underlays on timber and steel framed 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; and,
  • with absorbent and non-absorbent wall claddings installed over an 18 mm minimum drained cavity; and,
  • with masonry veneer in accordance with NZBC Acceptable Solution E2/AS1 for timber framed buildings or to a specific design for steel framed buildings; and,
  • situated in NZS 3604 Wind Zones up to and including Extra High.

Specific Design

Thermakraft 220 Synthetic Underlay has also been appraised for use on buildings subject to specific weathertightness design. Building designers are responsible for the building design and for the incorporation of Thermakraft 220 Synthetic Underlay into their design in accordance with the declared properties and the instructions of Thermakraft Limited.

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

This Appraisal has been amended to update: 

  • The product name from 'Thermakraft 220 Wall Underlay' to 'Thermakraft 220 Synthetic Underlay'
  • Product weight/properties
  • Fire words in section 10.1, 11.1 and installer skill level 13.1 
Download this resource (PDF, 544KB)
For assistance with locating previous versions, please contact the information provider.

This Appraisal has been amended to update: 

  • The product name from 'Thermakraft 220 Wall Underlay' to 'Thermakraft 220 Synthetic Underlay'
  • Product weight/properties
  • Fire words in section 10.1, 11.1 and installer skill level 13.1 
This resource is not cited by any other resources.

Thermakraft 220 synthetic wall underlay

This document is not CITED BY any other resources:

Thermakraft 220 synthetic wall underlay

Description

Thermakraft 220 Synthetic Underlay is a flexible synthetic wall underlay for use under direct fixed and cavity wall claddings on timber and steel framed buildings. The product is manufactured from non-woven, spun bonded polypropylene and is coloured white.

 

Download this resource (PDF, 544KB)
Thermakraft 220 synthetic wall underlay
Description

Thermakraft 220 Synthetic Underlay is a flexible synthetic wall underlay for use under direct fixed and cavity wall claddings on timber and steel framed buildings. The product is manufactured from non-woven, spun bonded polypropylene and is coloured white.

 

Download this resource (PDF, 544KB)
This resource does not cite any other resources.

Thermakraft 220 synthetic wall underlay

This resource does not CITE any other resources.
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