Minimum Roof Slope For Shingles

Residential low slope roofing can generally be divided up into two broad categories.

Minimum roof slope 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. Asphalt shingles minimum roof slope roof pitch r905 2 2. Minimum required roof slope for roofing materials. The 2 12 number is rise over run or two units of vertical for every 12 units horizontal.

This means for every 12 horizontal units the roof must rise a minimum of 2 vertical units. They provide excellent weather resistance great value and now more than ever a tremendous range of beautiful designs and color blends. So a 4 12 pitch roof rises 4 inches for every 12 inches of horizontal run. Finding the right products for your low slope roof.

The minimum pitch for a standing seam metal roof is 1 4 or 3 inches rise to 12 inches run. Pitch is measured in inches of vertical rise of the roof over one foot 12 inches of horizontal run. Low slope roofs present a challenge where water is concerned. Minimum required slope x in 12 minimum required slope degrees asphalt shingles.

Some people recommend not installing asphalt shingles on slopes below 5 12 but a skilled roofer may well be able to make this work. This number corresponds to the number of inches of rise in a 12 foot run. However those naysayers would be wrong. The short simple answer is 2 12 has traditionally been considered the absolute minimum acceptable roof slope suitable for asphalt shingles.

Low slope roofing shingles. 9 46 built up roof asphalt. Manufacturers of asphalt shingles recommend a pitch of 4 12 or more but the absolute minimum pitch is 2 12. If you have a low slope roof but would love to have a shingled look rather than other solutions like rolled sheet roofing you are in.

That works out to about nine degrees if that works better for you. The minimum requirement is 2 12. Shingles of all types need to have a slope to function properly. In 12 0 25 in 12 1 19 built up roof coal tar pitch.

Minimum roof pitch for 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. 18 43 asphalt shingles with special underlayment requirements 2 in 12. Larger flat roofed applications low slope such as residential condominium complexes row homes and town houses and smaller applications such as residential porch and garage transitions from the main home where the slope of the roof changes dramatically. The minimum pitch for shingles is 1 6 which is equivalent to 4 inches rise to 24 inches run.

Asphalt shingles continue to be the most widely installed roof covering option in north america. Roofing material or system. There are differing opinions as to the minimum slope for a roof but the generally accepted minimum is 3 12.