Minimum Roof Pitch For Fiberglass Shingles

Owens corning produces high quality asphalt coating asphalt sealants and adhesives for asphalt shingles.

Minimum roof pitch for fiberglass shingles.

The short simple answer is 2 12 has traditionally been considered the absolute minimum acceptable roof slope suitable for asphalt shingles. Asphalt shingles continue to be the most widely installed roof covering option in north america. To get the minimum pitch for a metal roof the vertical rise per foot is divided by the horizontal slope. The 2 12 number is rise over run or two units of vertical for every 12 units horizontal.

Shingles of all types need to have a slope to function properly. They provide excellent weather resistance great value and now more than ever a tremendous range of beautiful designs and color blends. Metal roof shingles require a minimum roof pitch of 3 12 or greater. You could also opt for a pvc flat roofing membrane.

The minimum pitch for shingles is 1 6 which is equivalent to 4 inches rise to 24 inches run. 2 5 12 to 19 12 pitches clay or cement tiles can be used on a wide range of roof pitches. We can even help you find a professional to install it. Slopes above 19 12 are not recommended since tiles on very steep roofs can rattle.

There are some standing seam metal roofing options available from atas and other manufacturers that can be installed on a roof with pitch of 1 12. The minimum requirement is 2 12. So you would need to pick the right option as most regular standing seam metal roofs will require a roof pitch of 2 12 or even 3 12 at a minimum. Clay and concrete tile requires a minimum roof pitch of 2 1 2 12 or greater.

Asphalt shingles require a minimum roof pitch of 2 12 or greater. Installation on roof slopes below a 2 in 12 pitch is not recommended at all. With regards to metal roofing the profile refers to the shape adopted by the metal sheets when they are bent to form the panels. For pitches of 2 5 12 up to 4 12 the roof requires double underlayment.

The minimum roof slope for metal roofs is dependent upon the roof profile. Corrugated metal roofing has the same minimum pitch. That works out to about nine degrees if that works better for you. The minimum pitch for a standing seam metal roof is 1 4 or 3 inches rise to 12 inches run.

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. Experience the total owens corning roofing system and high quality roofing shingles. Minimum pitch for metal roof.