Minimum Slope Of Roof For Shingles

What is the minimum pitch slope of an asphalt shingle roof.

Minimum slope of roof for shingles.

This number corresponds to the number of inches of rise in a 12 foot run. The minimum slope for an asphalt shingle roof is 2 12. So a 4 12 pitch roof rises 4 inches for every 12 inches of horizontal run. Learn more about slope roof.

Owens corning produces high quality asphalt coating asphalt sealants and adhesives for asphalt shingles. The roof pitch between 2 12 and 4 12 is considered as a low pitch roof. Experience the total owens corning roofing system and high quality roofing shingles. The same can also be the case when the tiled roof has a reduced exposure.

Pitch is measured in inches of vertical rise of the roof over one foot 12 inches of horizontal run. Some people recommend not installing asphalt shingles on slopes below 5 12 but a skilled roofer may well be able to make this work. The following table provides the minimum required allowable roof slope for each type of roofing material mentioned in the code. The 2 12 number is rise over run or two units of vertical for every 12 units horizontal.

There are differing opinions as to the minimum slope for a roof but the generally accepted minimum is 3 12. The minimum requirement is 2 12. The minimum roof slope allowed by code for any type of roof is in 12 applicable only to coal tar pitch roof systems. An installer will apply the cedar shingles of a fully waterproof built up roof or layer.

In high moisture climates low slope roofs will require additional maintenance to ensure excess water does not enter your home. Asphalt shingles can only be installed on roof slopes of 2 12 or greater. Shingles of all types need to have a slope to function properly. The requirements for an asphalt shingles roof are contained in the international building code.

That works out to about nine degrees if that works better for you. Asphalt shingles continue to be the most widely installed roof covering option in north america. Minimum slope for asphalt shingles. This means for every 12 horizontal units the roof must rise a minimum of 2 vertical units.

The short simple answer is 2 12 has traditionally been considered the absolute minimum acceptable roof slope suitable for asphalt shingles. We can even help you find a professional to install it. Manufacturers of asphalt shingles recommend a pitch of 4 12 or more but the absolute minimum pitch is 2 12. If your home features a low slope roof you can still install the cedar roof of your dreams.

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