Apply a weather resistant barrier over sidewall sheathing. Please note some regions may require two layers of weather resistant barrier. Check local codes for more information.
Easy installation makes this product the fastest, easiest, most resilient way to provide a rainscreen layer and capillary break to your building envelope. Install CavClear Rainscreen Mat WS after windows and doors have been properly installed and flashed.
- Starting at the base of the wall unroll CavClear Rainscreen Mat WS from right to left with the four-inch fabric flap at the bottom, the three-dimensional (green) polymer matrix against the weather resistant barrier and the fabric facing the exterior of the building. Staple or nail every three square feet.
- On the first (bottom) course only, un-fold the four-inch fabric flap and tuck it between the (green) polymer matrix and the weather resistant barrier to create an insect screen.
- On intermediate courses, butt blue polymer material together tightly without overlapping. Pull four inch fabric flap over previous course (shingle style) and staple.
- On top course, invert the roll and unroll left to right with the four-inch fabric flap at the top. Unfold the fabric flap and tuck it between the (green) matrix and the weather resistant barrier to create an insect screen.
- Apply exterior cladding over CavClear Rainscreen Drainage Mat WS using manufacturer’s recommended fasteners and spacing.
CavClear Rainscreen Mat WS has a Class A flame spread according to NFPA285 testing, and contains a core polymer of UV stabilized polypropylene.
CavClear® Rainscreen Drainage Mat WS 10mm product meets the physical requirements of Section 18.104.22.168, Item 1b of the 2005 National Building Code of Canada and 2006 British Columbia Building Code.
Store in a clean, dry, sheltered area off of the ground until used. Protect from UV rays.