Min Roof Slope For Shingles

Manufacturers of asphalt shingles recommend a pitch of 4 12 or more but the absolute minimum pitch is 2 12.

Min roof slope for shingles. Shingles of all types need to have a slope to function properly. 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. Asphalt shingles continue to be the most widely installed roof covering option in north america. The minimum requirement is 2 12.

They provide excellent weather resistance great value and now more than ever a tremendous range of beautiful designs and color blends. This number corresponds to the number of inches of rise in a 12 foot run. The minimum pitch for shingles is 1 6 which is equivalent to 4. Roofing material or system.

In 12 0 25 in 12 1 19 built up roof coal tar pitch. Finding the right products for your low slope roof. That works out to about nine degrees if that works better for you. Some people recommend not installing asphalt shingles on slopes below 5 12 but a skilled roofer may well be able to make this work.

Asphalt shingles can only be installed on roof slopes of 2 12 or greater. There are differing opinions as to the minimum slope for a roof but the generally accepted minimum is 3 12. Match the roofing on the covered porch with the main roof. What is the minimum pitch slope of an asphalt shingle roof.

The recommended minimum roof pitch for shingles is 2 12 or simply two units of vertical rise to every twelve units of horizontal span. 18 43 asphalt shingles with special underlayment requirements 2 in 12. Asphalt shingles minimum roof slope roof pitch r905 2 2. 9 46 built up roof asphalt.

Asphalt composition shingles are designed to be installed on roof slopes greater than a 4 in 12 pitch. Pitch is measured in inches of vertical rise of the roof over one foot 12 inches of horizontal run. So a 4 12 pitch roof rises 4 inches for every 12 inches of horizontal run. Determine the minimum slope of the roof based on the roofing material.

Residential low slope roofing can generally be divided up into two broad categories. This means for every 12 horizontal units the roof must rise a minimum of 2 vertical units. The 2 12 number is rise over run or two units of vertical for every 12 units horizontal. Minimum required roof slope for roofing materials.

Minimum required slope x in 12 minimum required slope degrees asphalt shingles. Therefore the asphalt manufactures base their warranties around the minimum recommended pitch of 4 in 12.