TradeSelect VapourTech Brane VHP
Vapour Permeable Membrane
Trade Select™ VapourTech Brane® VHP is classified as a Water Barrier and Class 4 Vapour Permeable membrane.
Very high levels of water vapour are allowed to absorb and diffuse through the core non-woven structure, ensuring condensation risk is controlled, while outside liquid water cannot penetrate inwards.
Trade Select™ VapourTech Brane® VHP is chemically non-reactive in conjunction with treated timber and salt conditions close to coastlines.
Product Advantages
- Class 4 Vapour Permeable
- Water Barrier
- Triple layer construction
- Low flammability, suitable for all BALs in bushfire-prone areas
Applications
Residential & Commercial Wall Wrap and Vapour Permeable Membrane for a wide range of wall systems.
Blank one so all stay closed
Product Details
| Product Name | Trade Select™ VapourTech Brane® VHP |
| Roll Size | 2740 mm x 30 m (82.2m2) 1370 mm x 30 m (41.1m2) 1500 mm x 30 m (45m2) |
| Duty Rating | Light Wall |
R Values
| Declared Total System R-Values | Winter | Summer |
| Light Weight Cladding Fixed to battens with Trade Select™ VapourTech Brane VHP® + R2.7 fibrous batt. | RT2.92 | RT2.77 |
| Brick Veneer Wall With Trade Select™ VapourTech Brane VHP® + R2.7 fibrous Batt | RT2.93 | RT2.78 |
Product Testing
Material Properties and Classifications
Trade Select™ VapourTech Brane® VHP classifications in accordance with AS/NZS 4200.1:2017.
| Flammability Index | AS 1530.2-1993 | Low ≤ 5 |
| Nominal Material Thickness | 0.38 mm | |
| Duty Rating | AS/NZS 4200.1:2017 | Light Wall |
| Vapour Control | ASTM E96 | Class 4 Vapour Permeable |
| Vapour Permeance | ASTM E96 | >1.1403 ug/N.s |
| Water Control | AS/NZS 4201.4:1994 | Water Barrier |
| Resistance to Dry Delamination | AS/NZS 4201.1:1994 | Pass |
| Resistance to Wet Delamination | AS/NZS 4201.2:1994 | Pass |
| Shrinkage (Repeated wetting & drying) | AS/NZS 4201.3:1994 | 0.0% |
| Emittance Value | AS/NZS 4201.5:1994 | 0.9, 0.9 |
Trade Select™ VapourTech Brane® VHP complies with AS 3959-2018 Construction of buildings in bushfire-prone areas for use in all BALs.
Seek independent advice regarding the selection of sarking prior to installation in the BAL design.
Health and Safety
Specification Notes
Product Name: Trade Select™ VapourTech Brane® VHP
The pliable building membrane to be installed shall be Trade Select™ VapourTech Brane® VHP very high permeance wall wrap and shall be installed in accordance with AS/NZS 4200.2:2017 Pliable Building Membranes and Underlays, Part 2: Installation.
Emittance Value: 0.9, 0.9
Emittance Classification: IR Non-Reflective, IR Non-Reflective
Vapour Control Classification: Class 4 Vapour Permeable,>1.1403 µg/N·s
Water Control Classification: Water Barrier
Flammability Index: Low (≤5)
Duty Classification: Light Wall in accordance with AS/NZS 4200.1:2017
Installation Instructions
Trade Select™ VapourTech Brane® VHP should be installed in accordance with AS/NZS 4200.2:1994 Pliable Building Membranes and Underlays, Part 2: Installation Requirements.
GENERAL
Trade Select™ VapourTech Brane® VHP should be installed horizontally as a continuous membrane by fixing to all framing members with the printed side facing out. Trade Select™ VapourTech Brane® VHP should extend from the top plate to the bottom plate on concrete slabs or bearers in timber construction. Fixings should be galvanised clouts or staples for timber construction and tech screws for fastening to steel constructions. In high wind areas, it is recommended to install using non-rip caps on clouts, staples or tech screws. Horizontal, vertical and end overlaps must be 150 mm, with all top layers overlapping the outside of lower layers to prevent water ingress. Stagger any vertical overlaps. Any damage made to Trade Select™ VapourTech Brane® VHP during installation including holes and tears must be repaired. Trade Select™ VapourTech Brane® VHP is not designed to withstand prolonged direct exposure to UV light and the elements. Outer cladding should be installed without delay.
