Slope Of A 2 12 Roof

Most roof s have a pitch in the 4 12 to 9 12 range.

Slope of a 2 12 roof.

Other than the 45 roof slope which is 12 in 12 none of the standard roof pitches 5 in 12 6 in 12 etc are equal to a whole degree. Common roof pitches and equivalent grade degree and radian angles. Using a tape measure make a pencil mark 12 inches from the end of a carpenter s level. The short simple answer is 2 12 has traditionally been considered the absolute minimum acceptable roof slope suitable for asphalt shingles.

A 2 12 roof slope means your roof has 2 inches of vertical drop for every 12 inches of horizontal. Simply locate a roof rafter board place the end of the level against the bottom edge and measure from the 12 inch mark vertically to the bottom edge of the rafter. Asphalt shingles continue to be the most widely installed roof covering option in north america. Learn more about finding the angle of a line using our slope calculator.

A pitch of 2 12 is the minimum pitch for shingles made of asphalt so your roof just barely. These roofs have a pitch less than 4 12. This measurement is best done on a bare roof because curled up roofing shingles will impair your measurement. The best roofs for a 2 12 pitch roof pitch basics.

High pitched roofs often need extra fasteners and their pitch can be as high as 21 12. Then you ll be able to measure slope from an unfinished attic space under the roof. Conventional roofs are the easiest to construct and you can walk on them safely. The picture below shows the pitch of a 7 12 roof slope meaning that for 12 of horizontal measurement roof run the vertical measurement roof rise is 7.

What is the minimum slope for an asphalt shingle roof. This means for every 12 horizontal units the roof must rise a minimum of two and one half vertical units. Clay and concrete roof tiles can only be installed on roof slopes of 2 1 2 12 or greater. You can also calculate roof pitch even without using a roof slope calculator.

They provide excellent weather resistance great value and now more than ever a tremendous range of beautiful designs and color blends. Minimum roof slope roof pitch r905 3 2.