Shield 2 12 Pitch Roof

Resilient asphalt shingles lie much flatter to the substrate than slate tile and concrete which keeps water from being easily blown under them.

Shield 2 12 pitch roof.

Asphalt shingles continue to be the most widely installed roof covering option in north america. It can be ice water shield or 2 layers of no. On roof slopes of 2 12 to 4 12 the remainder of the roof shall be two layers of 15 felt applied in shingle fashion or 1 layer of ice dam protection. Roof pitch degree table.

The below diagram helps outline exactly how to determine how much ice water shield is needed on any given roof above 4 12 pitch. Please give us your thoughts dave. Full coverage ice and water shield under shingles on a low slope roof if you intend to use asphalt shingles on a pitch of 2 1 2 in 12 you have no choice but to apply a waterproof underlayment fully adhered to the roof sheathing. I was told that we should use an ice shield block on the entire roof of our 1920 s two story bungalow with a 10 12 pitch and 4 12 pitch dormers.

A pitch of 2 12 is the minimum pitch for shingles made of asphalt so your roof just barely makes the cut off for one of the most popular roofing material options. We included a roof pitch chart below the 7 12 example image and the calculator below that. 15 asphalt saturated building felt set in hot asphalt or mastic. The short simple answer is 2 12 has traditionally been considered the absolute minimum acceptable roof slope suitable for asphalt shingles.

If this isn t practical then perform the same measurement on the underside of the roof. They provide excellent weather resistance great value and now more than ever a tremendous range of beautiful designs and color blends. It must be installed the full length of all valleys.