Minimum Pitch For Shingle Roof

Minimum pitch for metal roof.

Minimum pitch for shingle roof.

Asphalt shingles minimum roof slope roof pitch r905 2 2. However you can only use this pitch with built up roofing or specialized synthetic roofing. The minimum pitch for a roof is 1 4 12 which translates to 1 4 inch rise to 12 inches of run. The minimum pitch is typically 3 12 meaning the roof should rise 3 inches for every 12 inches of horizontal foot.

With regards to metal roofing the profile refers to the shape adopted by the metal sheets when they are bent to form the panels. The metal roof minimum slope doesn t stray far from other building with different material. Shingles of all types need to have a slope to function properly. The minimum roof slope allowed by code for any type of roof is in 12 applicable only to coal tar pitch roof systems.

They provide excellent weather resistance great value and now more than ever a tremendous range of beautiful designs and color blends. The roofing materials most often used for these pitches include asphalt composite shingles. The 2 12 number is rise over run or two units of vertical for every 12 units horizontal. The short simple answer is 2 12 has traditionally been considered the absolute minimum acceptable roof slope suitable for asphalt shingles.

What is the minimum pitch slope of an asphalt shingle roof. To get the minimum pitch for a metal roof the vertical rise per foot is divided by the horizontal slope. These shingles are appropriate for pitches as low as 4 12 pitch all the way up to a 12 12. That works out to about nine degrees if that works better for you.

This means for every 12 horizontal units the roof must rise a minimum of 2 vertical units. The minimum requirement is 2 12. Asphalt shingles continue to be the most widely installed roof covering option in north america. The standard of lower pitch actually ranges between 1 12 to 5 12.

Traditional 3 tab shingles made with asphalt composite are the most popular type of shingle and are the most flexible in terms of adapting to many roof pitches.