Minimum Roof Pitch For Shingles

Pitch is measured in inches of vertical rise of the roof over one foot 12 inches of horizontal run.

Minimum roof pitch for shingles.

Wood shakes require a minimum roof pitch of 3 12 or greater. Tuesday september 11 2018. Mineral surfaced roll roofing requires a minimum roof pitch of 1 12 or greater. That works out to about nine degrees if that works better for you.

The 2 12 number is rise over run or two units of vertical for every 12 units horizontal. However it is regrettable that many installers usually ignore this requirement due to the desire for a quick installation process. So a 4 12 pitch roof rises 4 inches for every 12 inches of horizontal run. They provide excellent weather resistance great value and now more than ever a tremendous range of beautiful designs and color blends.

Wood shingles require a minimum roof pitch of 3 12 or greater. What is the minimum pitch slope of an asphalt shingle roof. Slate and slate type shingles require a minimum roof pitch of 4 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. The short simple answer is 2 12 has traditionally been considered the absolute minimum acceptable roof slope suitable for asphalt shingles. The recommended minimum roof pitch for shingles is 2 12 or simply two units of vertical rise to every twelve units of horizontal span. Manufacturers of asphalt shingles recommend a pitch of 4 12 or more but the absolute minimum pitch is 2 12.