Roofing Felt Under Cement Board

Does drip edge go over or under felt.

Roofing felt under cement board.

Item 656632 model 0903000. Understanding the proper way to install the drip edge will only get you so far. Behind the green board thats above your cement board wont hurt but you don t need to. Roofing shingles and materials plus factory certified roofers including ratings from real homeowners from north america s largest roofing manufacturer.

All you need to do is tack it up or staple it. Having a layer of roof felt will block the resin preventing it from staining or compromising your roof shingles. Gaf shingle mate 36 in x 144 ft 400 sq ft felt roof underlayment. Residential and commercial roofing shingles slate roof ventilation roof underlayments asphaltic and tpo roof membranes.

According to most building codes and manufacturer recommendations the drip edge should be installed beneath the underlayment along the eaves of the roof. Roofing underlayment or felt protects the roofing from any resins that bleed out of the sheathing. Yes you ll need to put the felt just behind the cement board. After the subfloor is down roll out either felt paper or rosin paper starting next to the longest wall.

Roofing underlayment or felt protects the roof deck from rain before the roofing is installed. Installing building paper is a simple task. Felt paper comes in 15 pound and 30 pound options. The lightest cement board in the industry is ideal for use as a cover board in system applications such as liquid applied membranes or as a parapet fire or thermal barrier roof board.

Roofing underlayment or felt provides an extra weather barrier in case of blowoffs or water penetration through the roofing or flashings.