VapourTech® Wall

Trade Select™ VapourTech® Wall is used as a wall wrap behind fibre cement and timber cladding in most Australian climates.

If installed behind non-absorbent claddings such as steel, provision should be given for adequate drainage of any trapped moisture.

Product should not be used in roofing applications. 

Product is not reflective.

Product is not recommended for wall applications in ABCB Climate Zone 1. 

In direct fix cladding applications where the cladding reduces the drainage and drying capability of the product, an external drainage cavity is recommended using Ametalin Cavity Drainage Battens™ (10 mm) or ThermalCav™ Drainage Battens (20mm). Non-absorbent claddings such as steel, adequate drainage must be provided.  

VapourTech® Wall should not be used in direct contact with LOSP, organic solvent or oil based treated timbers. Separation from these components is required or alternative pliable building membranes investigated and specified such as Trade Select™ CeaseFire®. 

Blackbutt, Blackwood, Ironbark, Jarrah, Merbau, and Spotted Gum timber cladding among others, known for their high tannin content, natural faults and borer holes, have tendencies to leach and leak in conditions of very high humidity and /or prolonged water exposure. All direct to stud applications of the above treated timbers should be avoided therefore it is recommended that VapourTech® Wall should be separated by the incorporation of an external drainage cavity. and cladding placed on non-reactive battens to the external side of VapourTech® Wall. For specific timber and timber construction compatibility inquiries, kindly contact the our Technical team. 

When specifying, state the following:
Product Name: Trade Select™ VapourTech^® Wall

The pliable building membrane to be installed shall be Trade Select™ VapourTech^® Wall, very high permeance wall wrap and shall be installed in accordance with AS 4200.2: 2017 Pliable Building Membranes and Underlays, Part 2: Installation.

Emittance Value: 0.58, 0.56
Emittance Classification: IR Non-Reflective, IR Non-Reflective
Vapour Permeance: 3.7640 ug/N.s
Vapour Control Classification: Class 4 Vapour Permeable
Water Control Classification: Water Barrier
Air Control Classification: Air Barrier
Flammability Classification: Low (≤5)
Duty Classification: Light Wall in accordance with AS/NZS 4200.1:2017

VapourTech Wall - Technical Data Sheet (PDF)