Maximum 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.

Maximum roof pitch for shingles.

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. Pitch is measured in inches of vertical rise of the roof over one foot 12 inches of horizontal run. Asphalt shingles do require that you have a minimum pitch to your roof. That works out to about nine degrees if that works better for you.

What is the minimum pitch slope of an asphalt shingle roof. And 4 12 minimum roof slope for slate and wood shakes. Asphalt shingles continue to be the most widely installed roof covering option in north america. 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.

These shingles are appropriate for pitches as low as 4 12 pitch all the way up to a 12 12. So a 4 12 pitch roof rises 4 inches for every 12 inches of horizontal run. It is important for shingle roofs to function properly and one method of ensuring that this is achieved is to observe the pitch requirements for the shingles. Shingles of all types need to have a slope to function properly.

There are plenty of other options however for flat and nearly. Manufacturers of asphalt shingles recommend a pitch of 4 12 or more but the absolute minimum pitch is 2 12. Roof pitch multiplier table. They provide excellent weather resistance great value and now more than ever a tremendous range of beautiful designs and color blends.

Metal shingles and wood shingles. Minimum and maximum roof slope limits vary based on specific roof system and project types. The maximum slope considered suitable for normal shingle application is 45 degrees or 12 per foot. Degrees to pitch rise in run table.

Roof slope equivalents as rise. If a roof slope exceeds this limitation the shingles should be applied by the following recommended method complying with astm d4586. They won t be appropriate for all roofs. The short simple answer is 2 12 has traditionally been considered the absolute minimum acceptable roof slope suitable for asphalt shingles.

Complete list of roofing types. If you re having asphalt shingles put on your roof you will have to have a minimum slope. Clay and concrete tile minimum roof slope roof pitch r905 3 2. This means for every 12 horizontal units the roof must.

Following is a review of code requirements and nrca s roof slope guidelines as well as some additional factors designers should consider. The 2 12 number is rise over run or two units of vertical for every 12 units horizontal. Clay and concrete roof tiles can only be installed on roof slopes of 2 1 2 12 or greater. The minimum requirement is 2 12.

Fortunately the requirements are quite accommodating.