R-Vent® is a 40% recycled ventilation mat used in cedar, metal, & tile roof construction. The 90% open mesh creates an airspace/cavity that is perfect for promoting air flow in all directions between the metal panels and sheathing.
Install plywood roof sheathing onto rafters. Install roofing felt or ice dam protection membrane over sheathing. Check local codes and manufacturer’s recommendations for specific requirements.
Install R-Vent® over roofing felt, ice protection membrane, and metal edge flashing or drip edge. Ensure R-Vent® material is installed flush against edge of the flashing or drip edge. Carefully trim the R-Vent® material at all penetrations with a utility knife or scissors.
When installing metal or alternate material shingles, unroll R-Vent® horizontally just ahead of the shingles as they are installed. Tack or nail R-Vent® in place every three square feet. Do not overlap the R-Vent® material. Butt each course tightly against the previous course and at vertical seams.
When installing vertical metal roofing panels, unroll R-Vent® vertically from ridge to eave just ahead of the metal panels as they are installed. Tack or nail R-Vent® in place every three square feet. Do not overlap the R-Vent® material. Butt each course tightly against the previous course and at vertical seams.
At ridge locations, extend R-Vent® material over the ridge and butt against the material on the opposite side of the roof. If a ridge vent is utilized, follow the ridge vent manufacturer’s recommendations for underlayment material installation.
Apply roofing materials using manufacturer’s recommended fasteners and instructions, allowing for the additional thickness of the R-Vent® material.
Roof Ventilation Products Thickness Roll Size Sq. Ft. Per Roll Rolls Per Pallet UOM R-Vent® .361” (9.16 mm) 39” X 61.5’ 200 18 Sq. Ft.