2 12 Roof Asphalt Shingles

Asphalt shingles shall only be used on roof slopes of two units vertical in 12 units horizontal 17 percent slope or greater.

2 12 roof asphalt shingles.

Resilient asphalt shingles lie much flatter to the substrate than slate tile and concrete which keeps water from being easily blown under them. The 2 12 number is rise over run or two units of vertical for every 12 units horizontal. The first thing to know about your roofing project. What is the minimum pitch slope of an asphalt shingle roof.

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. Installation on roof slopes below a 2 in 12 pitch is not recommended at all. Per bundle 30 pieces model 0840552 49 95 bundle 49 95 bundle. A roof slope of 2 12 up to but not including 4 12 is considered as low in residential construction.

Self sticking rubberized asphalt products like grace ice water shield are acceptable but expensive substitutes for 15 felt. The minimum requirement is 2 12. Shingles of all types need to have a slope to function properly. Additional underlayment protection with special application methods are required when asphalt shingles are installed on a low slope roof following the manufacturer s application instructions.

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 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. What precautions need to be taken to install shingles. Everything can be done at a distance.

Get free shipping on qualified asphalt roof shingles or buy online pick up in store today in the building materials department. Thanks to digital technology all of your decisions and interactions from selecting the right roofer to choosing a shingle to paying the contractor can be done at a distance. The short simple answer is 2 12 has traditionally been considered the absolute minimum acceptable roof slope suitable for asphalt shingles. Gaf timbertex pewter gray double layer hip and ridge cap roofing shingles 20 lin.