TradeSelect Brane VHP
Vapour Permeable Membrane
Trade Select™ Brane® VHP is a Very High Permeance (VHP), triple-layer Light* Duty wall wrap, designed for use behind fibre cement and timber cladding in timber and steel framed buildings, and in double brick and brick veneer drained cavity wall systems. When combined with taping of overlaps, Trade Select™ Brane® VHP will form an airtight wrap, reducing energy loss from the building envelope.
Classified as High Water Barrier, Low Vapour Barrier, Trade Select™ Brane® VHP permits very high levels of condensation absorption and diffusion, allowing water vapour to escape from within the wall structure while restricting the ingress of liquid moisture. Trade Select™ Brane® VHP is non-reactive so may be used in conjunction with treated timbers or close to coastlines. It can also be effectively used as an air barrier in unlined areas such as attics.
Product Advantages
- Translucent
- Tear resistant
- Low flammability
- Non-perforated
- Easy to install
- 2.74m width for quicker installation
Applications
Residential & Commercial Wall Wrap and Vapour Permeable Membrane for behind fibre cement and timber cladding in most Australian climates.
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Product Details
| Product Name | Trade Select™ 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* |
R Values
Product Testing
NCC/BCA Compliant
Trade Select™ Brane® VHP complies with AS/NZS 4200.1:1994, and therefore meets all the requirements of the National Construction Code and Building Code of Australia for pliable building membranes.
| Flammability Index | AS 1530.2-1993 | Low ≤ 5 |
| Duty Rating | AS/NZS 4200.1:1994 | Light* |
| Resistance to Water Penetration | AS/NZS 4201.4:1994 | High |
| Vapour Barrier | ASTM E96 | Low |
| Water Vapour Transmission Rate | 1584 g/m2·24hr (23°C, 50% RH) | |
| Emmitance | AS/NZS 4201.5:1994 | 0.42 |
| Calculated Reflectance | 58% |
Trade Select™ Brane® VHP complies with AS 3959-2009 Construction of buildings in bushfire-prone areas for use in wall systems BAL – LOW to BAL – FZ.
Health and Safety
Ametalin has assessed Trade Select™ Brane® VHP according to the criteria outlined in the National Occupational Health and Safety Commission (NOHSC):1008 (1998) and NOHSC: 1005 (1999). As a result of the assessment, this product is classified as non-hazardous according to the NOHSC criteria. To reduce risk of UV damage when installing this product, wear protective clothing, safety glasses and sunscreen, and work in the shade wherever practical. Take care when installing Trade Select™ Brane® VHP in windy conditions, as the wide width of the product can act as a sail.
Specification Notes
When specifying, state the following:
Product Name: Trade Select™ Brane® VHP
The pliable building membrane to be installed shall be Trade Select™ Brane® VHP very high permeance wall wrap. Product is manufactured by Ametalin and shall be installed in accordance with AS/NZS 4200.2: 1994 Pliable Building Membranes and Underlays, Part 2: Installation Requirements.
Water Vapour Transmission (WVT): 1584 g/m2•24hr
Vapour Resistance: 0.08 MN•s/g
Vapour Barrier Classification: Low
Water Barrier Classification: High
Duty: Light* in accordance with AS/NZS 4200.1:1994
Installation Instructions
Trade Select™ 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™ Brane® VHP should be installed horizontally as a continuous membrane by fixing to all framing members with the printed side facing out. Trade Select™ 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™ Brane® VHP during installation including holes and tears must be repaired. Trade Select™ Brane® VHP is not designed to withstand prolonged direct exposure to UV light and the elements. Outer cladding should be installed without delay.
