Minimum Pitch Angle Shingle Roof

Shingles of all types need to have a slope to function properly.

Minimum pitch angle shingle roof.

Complete list of roofing types. Asphalt shingles can only be installed on roof slopes of 2 12 or greater. That works out to about nine degrees if that works better for you. Roof slope equivalents as rise.

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. Express roof pitch as the ratio of the amount of the vertical rise of a roof or rise over the. The recommended minimum roof pitch for shingles is 2 12 or simply two units of vertical rise to every twelve units of horizontal span.

The minimum pitch for a roof is 1 4 12 which translates to 1 4 inch rise to 12 inches of run. They provide excellent weather resistance great value and now more than ever a tremendous range of beautiful designs and color blends. Roof pitch defined and explained. The ratio can be indicated by a division slash separating the numbers such as 2 12 or 7 12.

Degrees to pitch rise in run table. Or the colon can replace the slash as in 2 12 or 7 12. In the roofing trade the go to term is pitch and it is expressed in terms of 12 inches so the pitch of a roof is determined by how many inches the slope rises for every 12 inches it runs horizontally. Roof pitch multiplier table.

Run in degrees and as percentage the minimum roof slope allowed by code for any type of roof is in 12 applicable only to coal tar pitch roof systems. However you can only use this pitch with built up roofing or specialized synthetic roofing. Roof pitch designations are comprised of two numbers indicating a ratio. The minimum requirement is 2 12.

Asphalt shingles minimum roof slope roof pitch r905 2 2. Pitch is the term used to describe the angle slope or slant of your roof. This means for every 12 horizontal units the roof must rise a minimum of 2 vertical units. Pitch angle incline slope they all can be used to refer to the steepness of a roof.

The minimum roof pitch for shedding snow is around 30 or a 6 12 or 7 12 slope although this is not a definite as the material of your roof the direction of the snow and wind are some factors that can affect whether or not snow will slide as roofs of as little as 10 have been reported to shed snow. The short simple answer is 2 12 has traditionally been considered the absolute minimum acceptable roof slope suitable for asphalt shingles.