2 12 Roof Grade

We included a roof pitch chart below the 7 12 example image and the calculator below that.

2 12 roof grade.

What is the minimum slope for an asphalt shingle roof the short simple answer is 2 12 has traditionally been considered the absolute minimum acceptable roof slope suitable for asphalt shingles. While roof slope is typically expressed in rise it can also be expressed in degrees or in percent of slope. The most commonly used roof pitches fall in a range between 4 12 and 9 12. Steeper sloped roofs are considered more aesthetically pleasing and last longer.

What is a 2 12 roof pitch if a roof rises 2 in a length of 12 this is 2 12 roof pitch. That means the roof doesn t shed water as easily as steeper roofs which is why choosing the right type of roofing material is so important. A bituminous underlayment such as grace ice water shield under standard three tab asphalt shingles would work but only on slopes 2 12 and steeper. Simply put it s a shallow roof.

Image 1 12 to 12 12 roof pitch 7 12 pitch. That s the same as a 14 degree slope or a 25 slope. A 3 in 12 roof rises 3 for every 12 of run. These benefits do not come cheaply though.

Pitches of less than 2 12 are considered flat roofs even though they may be very slightly angled. If this isn t practical then perform the same measurement on the underside of the roof. Roof pitch is the slope created by the rafter. Roof pitch on the form x 12 can be expressed in grades as.

Conventional slope roof range between 4 in 12 and 8 in 12. The table below shows common roof pitches and the equivalent grade. 2 12 roof pitch angle 9 46 degrees. Roof pitch degree table.

A low slope roof is anywhere from 2 in 12 to 4 in 12. A pitch over 9 12 is considered a steep slope roof between 2 12 and 4 12 is considered a low slope roof and less than 2 12 is considered a flat roof. You can find the roof pitch in the form of x 12 like 4 12 or 9 12. S grade 100 4 12 33 3 roof pitch on the form x 12 can be expressed in angles as.

Anything more than 9 in 12 is considered steep. I didn t want the rental expense not to mention the risk of using an open flame on a combustible roof surface. 3 of rise per 12 of run is the same as 1 of rise per 4 of run or 1 4 25. There s always torch down but i don t do a lot of it and i don t own a torch.

Common roof pitches and equivalent grade degree and radian angles. S grade 100 x 12 3 example roof picth 4 12 as grade. Pitches lower than 4 12 have a slight angle and they are defined as low slope roofs. Why is the roof slope 25.

Most roof s have a pitch in the 4 12 to 9 12 range. Asphalt shingles continue to be the most widely installed roof covering option in north america.