Maximum Roof Pitch For Asphalt Shingles

The maximum slope considered suitable for normal shingle application is 45 degrees or 12 per foot.

Maximum roof pitch for asphalt shingles.

Fortunately the requirements are quite accommodating. Secure the shingle to the roof deck with fasteners as recommended by the roofing manufacturer. That works out to about nine degrees if that works better for you. If a roof slope exceeds this limitation the shingles should be applied by the following recommended method complying with astm d4586.

Why is 2 12 the minimum. 5 12 to 12 12 pitch. All asphalt shingle roofs with a pitch of 4 12 or more have an underlayment of 15 lb. There are plenty of other options however for flat and nearly.

For example if it is a very low slope water including snowmelt or. Wood and slate shingles do not lock together as tightly as other types of shingles. The roof pitch between 2 12 and 4 12 is considered as a low pitch roof so shingles can be installed in the roof slope between 2 12 and 4 12. Minimum required slope x in 12 minimum required slope degrees asphalt shingles.

Roofing material or system. Pitched roofs are most often associated with asphalt shingles although standing seam roofs are becoming ever more popular on pitched roofs as well. Minimum required roof slope for roofing materials. The short simple answer is 2 12 has traditionally been considered the absolute minimum acceptable roof slope suitable for asphalt shingles.

Asphalt shingles do require that you have a minimum pitch to your roof. 18 43 asphalt shingles with special underlayment requirements 2 in 12. Nrca s recommended minimum roof slope guidelines for steep slope roof systems generally are greater at steeper inclines than those in the building code. Wood and slate shingles are used in many of the same types of roofs as asphalt composite shingles but may not be appropriate for roofs near the lower end since they are more susceptible to leaking.

Asphalt felt paper that is tacked to the roof sheathing. For asphalt shingle clay and concrete tile metal shingle slate and wood shake and shingle roof systems nrca recommends slopes of 4 12 or more. The 2 12 number is rise over run or two units of vertical for every 12 units horizontal. Asphalt shingles continue to be the most widely installed roof covering option in north america.

They provide excellent weather resistance great value and now more than ever a tremendous range of beautiful designs and color blends. The minimum requirement is 2 12. If you re having asphalt shingles put on your roof you will have to have a minimum slope. In 12 0 25 in 12 1 19 built up roof coal tar pitch.

What is the minimum pitch slope of an asphalt shingle roof. The minimum slope for an asphalt shingle roof is 2 12. Shingles of all types need to have a slope to function properly. They won t be appropriate for all roofs.

Considering the roof slope requirement is important.