Minimum Roof Pitch For Shingles

Tuesday september 11 2018.

Minimum roof pitch for shingles.

Pitch is measured in inches of vertical rise of the roof over one foot 12 inches of horizontal run. Metal roof shingles require a minimum roof pitch of 3 12 or greater. 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.

What is the minimum pitch slope of an asphalt shingle roof. Wood shingles require a minimum roof pitch of 3 12 or greater. The minimum requirement is 2 12. What is the minimum slope for 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. That works out to about nine degrees if that works better for you. However it is regrettable that many installers usually ignore this requirement due to the desire for a quick installation process. The short simple answer is 2 12 has traditionally been considered the absolute minimum acceptable roof slope suitable for asphalt shingles.

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. 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.