Protect TF200 is used as a water-protection membrane in timber framed panel construction, where it performs a number of essential functions:
- To provide a second line of protection against rainwater penetration during the life of the building. Masonry cladding in particular requires a membrane since it allows some rain penetration into the cavity. Sheathing materials are not normally water-resistant. Protect TF 200 vapour-permeable membrane provides full protection to the whole of the external wall including the joints between panels, the sole plate and intermediate floor zones.
- To allow water vapour to escape from the structure into a drained and vented cavity behind the external cladding. The membrane is positioned on the cold side of the insulation to minimise the risk of condensation within the insulation, and to allow water vapour to escape into the vented cavity. Wall sheathing may be on the inner face (warm side), or the outer face (cold side) of the wall. This does not affect the placing of or need for the membrane.
- To protect and waterproof the structure during the construction period before external cladding is applied.