The asphalt shingle manufactures recommend that you install asphalt shingles on a recommended minimum of 4 in 12 or greater however most manufactures will warrant their shingles down to a 2 in 12 pitch if the recommended installation method is used.
2 12 roof asphalt shingles.
Asphalt shingle manufacturers will warrant shingles installed on roof slopes as low as 2 12 when these special installation procedures are followed.
Installation on roof slopes below a 2 in 12 pitch is not recommended at all.
Asphalt shingles should never be applied to roof slopes below 2 12 2 of vertical rise for every 12 of horizontal run or 9 5.
The minimum requirement is 2 12.
What precautions need to be taken to install shingles.
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The short simple answer is 2 12 has traditionally been considered the absolute minimum acceptable roof slope suitable for asphalt shingles.
A pitch of 2 12 is the minimum pitch for shingles made of asphalt so your roof just barely makes the cut off for one of the most popular roofing material options.
Resilient asphalt shingles lie much flatter to the substrate than slate tile and concrete which keeps water from being easily blown under them.
Gaf timbertex pewter gray double layer hip and ridge cap roofing shingles 20 lin.
And your family can remain in the home during the installation or repair.
The first thing to know about your roofing project.
Self sticking rubberized asphalt products like grace ice water shield are acceptable but expensive substitutes for 15 felt.
What is the minimum pitch slope of an asphalt shingle roof.
Everything can be done at a distance.
The 2 12 number is rise over run or two units of vertical for every 12 units horizontal.
Per bundle 30 pieces model 0840552 49 95 bundle 49 95 bundle.
Asphalt shingles shall only be used on roof slopes of two units vertical in 12 units horizontal 17 percent slope or greater.
Shingles of all types need to have a slope to function properly.