Maximum Roof Pitch For Shingles

Minimum and maximum roof slope limits vary based on specific roof system and project types.

Maximum roof pitch for shingles.

Roof slope equivalents as rise. The short simple answer is 2 12 has traditionally been considered the absolute minimum acceptable roof slope suitable for asphalt shingles. 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. The maximum slope considered suitable for normal shingle application is 45 degrees or 12 per foot.

The roofing materials most often used for these pitches include asphalt composite shingles. Asphalt shingles do require that you have a minimum pitch to your roof. The minimum requirement is 2 12. That works out to about nine degrees if that works better for you.

Complete list of roofing types. There are plenty of other options however for flat and nearly. 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. Clay and concrete roof tiles can only be installed on roof slopes of 2 1 2 12 or greater.

Degrees to pitch rise in run table. Fortunately the requirements are quite accommodating. Roof pitch multiplier table. Clay and concrete tile minimum roof slope roof pitch r905 3 2.

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. 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.

Metal shingles and wood shingles. Also if asphalt shingles are installed on a roof slope of 2 12 to 4 12 it shall be provided with a double underlayment application. They won t be appropriate for all roofs. These shingles are appropriate for pitches as low as 4 12 pitch all the way up to a 12 12.

Shingles of all types need to have a slope to function properly. Secure the shingle to the roof deck with fasteners as recommended by the roofing manufacturer. So a 4 12 pitch roof rises 4 inches for every 12 inches of horizontal run. 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. Pitch is measured in inches of vertical rise of the roof over one foot 12 inches of horizontal run. This means for every 12 horizontal units the roof must. 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.

They provide excellent weather resistance great value and now more than ever a tremendous range of beautiful designs and color blends.