Description
Trade Select® VapourTech® RWC Roof Wall Commercial is a high-performance, four-layer vapour permeable membrane designed for use in both commercial and residential roof and wall systems across Australian Climate Zones 2 to 8. Classified as a Class 4 Vapour Permeable membrane, it allows high levels of water vapour to diffuse through its structure, effectively controlling condensation risk while preventing external liquid water ingress.
Constructed with a durable four-layer design, VapourTech® RWC offers superior strength, tear, puncture, and UV resistance. Its low flammability rating makes it suitable for use in all Bushfire Attack Levels (BALs) in bushfire-prone areas. The product is less than 1 mm thick, making it suitable for DtS non-combustible constructions as per NCC C1.9.
Application:
VapourTech® RWC is intended for use as a sarking under tile, steel, and slate roofs, as well as a wall wrap behind fibre cement, timber, Hebel, and brick veneer systems in Australian Climate Zones 2 to 8. In Climate Zone 1 and areas north of the Tropic of Capricorn in Climate Zone 2, a Class 1 or Class 2 Vapour Barrier, such as Trade Select® Sarking HVB or Sarking xR, is recommended.
When installed over battens in roofs, condensation can occur on the underside of the product; therefore, drainage battens should be installed to separate the product from the steel roof and allow for adequate drainage of pooled or trapped water. Similarly, when installed in walls behind non-absorbent claddings such as steel, provision should be made for adequate drainage of any trapped moisture.
