Minimum Slope For Asphalt Shingle Roof

Shingles of all types need to have a slope to function properly.

Minimum slope for asphalt shingle roof.

The requirements for an asphalt shingles roof are contained in the international building code. Roofing material or system. Minimum slope for asphalt shingles. Minimum required slope x in 12 minimum required slope degrees asphalt shingles.

18 43 asphalt shingles with special underlayment requirements 2 in 12. This number corresponds to the number of inches of rise in a 12 foot run. The minimum slope for an asphalt shingle roof is 2 12. Rolled roofing material is often used on roofs that are low sloped.

Experience the total owens corning roofing system and high quality roofing shingles. 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. 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. Installation on roof slopes below a 2 in 12 pitch is not recommended at all.

Minimum required roof slope for roofing materials. Asphalt shingles can only be installed on roof slopes of 2 12 or greater. The 2 12 number is rise over run or two units of vertical for every 12 units horizontal. There are differing opinions as to the minimum slope for a roof but the generally accepted minimum is 3 12.

Owens corning produces high quality asphalt coating asphalt sealants and adhesives for asphalt shingles. Learn more about slope roof. We can even help you find a professional to install it. Some people recommend not installing asphalt shingles on slopes below 5 12 but a skilled roofer may well be able to make this work.

According to this code the minimum slope for asphalt shingles is 17 degrees or two vertical units to twelve units in the horizontal. Otherwise the safest minimum pitch for rolled roofing is 2 inches of decline per 12 inches of horizontal direction 2 12 pitch. This means for every 12 horizontal units the roof must rise a minimum of 2 vertical units. The minimum requirement is 2 12.

Asphalt shingles continue to be the most widely installed roof covering option in north america. That works out to about nine degrees if that works better for you. What is the minimum pitch slope of an asphalt shingle roof. What is the recommended installation requirements for the installation of a shingle below a 4 in 12 pitch.

Asphalt shingles minimum roof slope roof pitch r905 2 2. The roof pitch between 2 12 and 4 12 is considered as a low pitch roof. 9 46 built up roof asphalt.