Minimum Roof Pitch For Shingles

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

Minimum roof pitch for shingles.

That works out to about nine degrees if that works better for you. Wood shakes require a minimum roof pitch of 3 12 or greater. What is the minimum pitch slope of an asphalt shingle roof. They provide excellent weather resistance great value and now more than ever a tremendous range of beautiful designs and color blends.

Asphalt shingles continue to be the most widely installed roof covering option in north america. Slate and slate type shingles require a minimum roof pitch of 4 12 or greater. Metal roof shingles require a minimum roof pitch of 3 12 or greater. Tuesday september 11 2018.

Pitch is measured in inches of vertical rise of the roof over one foot 12 inches of horizontal run. The minimum requirement is 2 12. The short simple answer is 2 12 has traditionally been considered the absolute minimum acceptable roof slope suitable for asphalt shingles. However it is regrettable that many installers usually ignore this requirement due to the desire for a quick installation process.

Mineral surfaced roll roofing requires a minimum roof pitch of 1 12 or greater. So a 4 12 pitch roof rises 4 inches for every 12 inches of horizontal run. What is the minimum slope for an asphalt shingle roof. The 2 12 number is rise over run or two units of vertical for every 12 units horizontal.