Bradford Enviroseal Weather Barrier exceeds the James Hardie Specification

James Hardie Change to Weather Barrier Requirements behind Lightweight Clad

James Hardie only allow the use of weather barriers that are classified as ‘Water Barrier’ and vapour permeable in BCA Climate Zone 2 to 8 or vapour barrier in BCA Climate Zone 1.

This means that ‘Non-Water Barrier’ sarkings are not suitable for use behind James Hardie Lightweight Cladding, including Thermoseal Wall Breather, in BCA Climate Zone 2 to 8. The classification table published by James Hardie in May 2019 outlines that all wall wrap products used behind James Hardie cladding in BCA Climate Zone 2 to 8 must be classified as a ‘Water Barrier’ and ‘Class 3 or 4 Vapour Permeable’.

WEATHER BARIER CLASSIFICATION
CLIMATE ZONES WATER BARRIER VAPOUR PERMEANCE
2 - 8 High Vapour Permeable (Class 3 or 4)
1 Vapour Barrier (Class 1 or 2)

 

Bradford Enviroseal Weather Barrier exceeds the James Hardie Specification

Bradford Enviroseal wall wrap is classified as a ‘Water Barrier (High)’ and ‘Class 4 Vapour Permeable’ and is suitable for use behind all James Hardie™ Lightweight Cladding.

Bradford Enviroseal wall wraps are also compliant behind all other facades including Brick Veneer, Hebel® and all types of Cemintel®, Weathertex, FC Sheet, Foam, Timber and Metal Sheet cladding. A full list of compliant cladding brands is provided in our Enviroseal Cladding Compatibility Flyer.

To make sure you’re compliant behind all types of external cladding Enviroseal vapour permeable wall wrap is the ideal product solution for all applications.

PRODUCT WIDTH (mm) LENGTH (m) (M² PER ROLL ROLLS PER PALLET PRODUCT CODE
Enviroseal RW 1500 30 45 90 167641
Enviroseal RW 1500 50 75 46 118153
Enviroseal RW 2750 25 68.75 72 138628

Download the Technical Bulletin Here.

For more information please contact us!

 

Sarking Products for Non-Combustible Construction in Class 2 – 9 Buildings

Deemed-to-satisfy and alternate solution construction fabrics. Download the brochure here.

Contact DesignSmart

For architects, engineers and builders:

  • Expert insulation advice
  • Project and value engineering support
  • Industry-leading building science research
1800 354 044
bradforddesignsmart@csr.com.au

Technical Project Support

Bradford has experts located around Australia available to help architects & specifiers with their technical specifications.