Minimum Roof Pitch For Shingles

So a 4 12 pitch roof rises 4 inches for every 12 inches of horizontal run.

Minimum roof pitch for 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. What is the minimum slope for an asphalt shingle roof. Mineral surfaced roll roofing requires a minimum roof pitch of 1 12 or greater. Wood shakes require a minimum roof pitch of 3 12 or greater.

Shingles of all types need to have a slope to function properly. 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. They provide excellent weather resistance great value and now more than ever a tremendous range of beautiful designs and color blends.

Slate and slate type shingles require a minimum roof pitch of 4 12 or greater. Tuesday september 11 2018. Manufacturers of asphalt shingles recommend a pitch of 4 12 or more but the absolute minimum pitch is 2 12. That works out to about nine degrees if that works better for you.

Wood shingles require a minimum roof pitch of 3 12 or greater. Asphalt shingles continue to be the most widely installed roof covering option in north america. What is the minimum pitch slope of an asphalt shingle roof. The 2 12 number is rise over run or two units of vertical for every 12 units horizontal.