Minimum Slope For Asphalt Shingle Roof

Minimum required slope x in 12 minimum required slope degrees asphalt shingles.

Minimum slope for asphalt shingle roof.

Roofing material or system. 9 46 built up roof asphalt. The requirements for an asphalt shingles roof are contained in the international building code. The roof pitch between 2 12 and 4 12 is considered as a low pitch roof.

Otherwise the safest minimum pitch for rolled roofing is 2 inches of decline per 12 inches of horizontal direction 2 12 pitch. Shingles of all types need to have a slope to function properly. Learn more about slope roof. What is the minimum pitch slope of an asphalt shingle roof.

Asphalt shingles minimum roof slope roof pitch r905 2 2. This means for every 12 horizontal units the roof must rise a minimum of 2 vertical units. Owens corning produces high quality asphalt coating asphalt sealants and adhesives for asphalt shingles. The asphalt shingle manufactures recommend that you install asphalt shingles on a recommended minimum of 4 in 12 or greater however most manufactures will warrant their shingles down to a 2 in 12 pitch if the recommended installation method is used.

What is the recommended installation requirements for the installation of a shingle below a 4 in 12 pitch. Experience the total owens corning roofing system and high quality roofing shingles. The minimum requirement is 2 12. Asphalt shingles continue to be the most widely installed roof covering option in north america.

If your roof pitch declines up to 1 inch vertically for every 12 inches horizontally 1 12 pitch it is a good candidate for rolled roofing as long as you use the concealed nail method of fastening. Minimum slope for asphalt shingles. This number corresponds to the number of inches of rise in a 12 foot run. Asphalt shingles can only be installed on roof slopes of 2 12 or greater.

According to this code the minimum slope for asphalt shingles is 17 degrees or two vertical units to twelve units in the horizontal. That works out to about nine degrees if that works better for you. What is the minimum slope for an asphalt shingle roof the short simple answer is 2 12 has traditionally been considered the absolute minimum acceptable roof slope suitable for asphalt shingles. Some people recommend not installing asphalt shingles on slopes below 5 12 but a skilled roofer may well be able to make this work.

Let owens corning help you determine when it is time for a new roof and then let us help you choose the shingles for your roof that are right for you. Minimum required roof slope for roofing materials. There are differing opinions as to the minimum slope for a roof but the generally accepted minimum is 3 12. The minimum slope for an asphalt shingle roof is 2 12.

In 12 0 25 in 12 1 19 built up roof coal tar pitch. Rolled roofing material is often used on roofs that are low sloped. We can even help you find a professional to install it.