Minimum Roof Pitch For Shingles
That works out to about nine degrees if that works better for you.
Minimum roof pitch for shingles. The minimum requirement is 2 12. 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. Metal roof shingles require a minimum roof pitch of 3 12 or greater.
Shingles of all types need to have a slope to function properly. Slate and slate type shingles require a minimum roof pitch of 4 12 or greater. However it is regrettable that many installers usually ignore this requirement due to the desire for a quick installation process. Manufacturers of asphalt shingles recommend a pitch of 4 12 or more but the absolute minimum pitch is 2 12.
They provide excellent weather resistance great value and now more than ever a tremendous range of beautiful designs and color blends. So a 4 12 pitch roof rises 4 inches for every 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. Wood shakes require a minimum roof pitch of 3 12 or greater.
Tuesday september 11 2018. 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. Mineral surfaced roll roofing requires a minimum roof pitch of 1 12 or greater.