Minimum Slope For Asphalt Shingle Roof

Minimum slope for asphalt shingles.

Minimum slope for asphalt shingle roof.

Rolled roofing material is often used on roofs that are low sloped. Otherwise the safest minimum pitch for rolled roofing is 2 inches of decline per 12 inches of horizontal direction 2 12 pitch. Experience the total owens corning roofing system and high quality roofing shingles. Asphalt shingles continue to be the most widely installed roof covering option in north america.

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. 9 46 built up roof asphalt.

What is the recommended installation requirements for the installation of a shingle below a 4 in 12 pitch. In 12 0 25 in 12 1 19 built up roof coal tar pitch. Roofing material or system. Learn more about slope roof.

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 slope x in 12 minimum required slope degrees asphalt shingles. The minimum slope for an asphalt shingle roof is 2 12. The roof pitch between 2 12 and 4 12 is considered as a low pitch roof.

18 43 asphalt shingles with special underlayment requirements 2 in 12. The 2 12 number is rise over run or two units of vertical for every 12 units horizontal. The minimum requirement is 2 12. According to this code the minimum slope for asphalt shingles is 17 degrees or two vertical units to twelve units in the horizontal.

Shingles of all types need to have a slope to function properly. 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. Asphalt shingles can only be installed on roof slopes of 2 12 or greater. 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.

That works out to about nine degrees if that works better for you. There are differing opinions as to the minimum slope for a roof but the generally accepted minimum is 3 12. The requirements for an asphalt shingles roof are contained in the international building code. What is the minimum pitch slope of an asphalt shingle roof.

This number corresponds to the number of inches of rise in a 12 foot run. 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 required roof slope for roofing materials.