Minimum Roof Pitch For Asphalt Shingles

This number corresponds to the number of inches of rise in a 12 foot run.

Minimum roof pitch for asphalt shingles.

In 12 0 25 in 12 1 19 built up roof coal tar pitch. What is the minimum pitch slope of an asphalt shingle roof. Installation on roof slopes below a 2 in 12 pitch is not recommended at all. Clay and concrete tile requires a minimum roof pitch of 2 1 2 12 or greater.

The 2 12 number is rise over run or two units of vertical for every 12 units horizontal. Minimum roof pitch for shingles it is important for shingle roofs to function properly and one method of ensuring that this is achieved is to observe the pitch requirements for the shingles. Experience the total owens corning roofing system and high quality roofing shingles. Asphalt shingle roofing is designed to shed water that is flowing downward over its surface with each shingle overlapping the one below.

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. The recommended minimum roof pitch for shingles is 2 12 or simply two units of vertical rise to every twelve units of horizontal span. We can even help you find a professional to install it.

Roofing material or system. There are differing opinions as to the minimum slope for a roof but the generally accepted minimum is 3 12. 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. The minimum requirement is 2 12.

Metal roof shingles require a minimum roof pitch of 3 12 or greater. So a 4 12 pitch roof rises 4 inches for every 12 inches of horizontal run. That works out to about nine degrees if that works better for you. The roof pitch between 2 12 and 4 12 is considered as a low pitch roof so shingles can be installed in the roof slope between 2 12 and 4 12.

Minimum required slope x in 12 minimum required slope degrees asphalt shingles. Let us recap on the minimum roof pitch required for each type of roofing material. Pitch is measured in inches of vertical rise of the roof over one foot 12 inches of horizontal run. The short simple answer is 2 12 has traditionally been considered the absolute minimum acceptable roof slope suitable for asphalt shingles.

The minimum slope for an asphalt shingle roof is 2 12. Minimum required roof slope for roofing materials. 9 46 built up roof asphalt. Asphalt shingles require a minimum roof pitch of 2 12 or greater.

What is the minimum slope for an asphalt shingle roof. Asphalt shingles continue to be the most widely installed roof covering option in north america. Owens corning produces high quality asphalt coating asphalt sealants and adhesives for asphalt shingles.