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.

2 12 roof grade.

A low slope roof is anywhere from 2 in 12 to 4 in 12. Why is the roof slope 25. 2 12 roof pitch angle 9 46 degrees. I didn t want the rental expense not to mention the risk of using an open flame on a combustible roof surface.

A 12 in 12 roof can cost up to 50 more than a 4 in 12 roof. We included a roof pitch chart below the 7 12 example image and the calculator below that. Most roof s have a pitch in the 4 12 to 9 12 range. Simply put it s a shallow roof.

3 of rise per 12 of run is the same as 1 of rise per 4 of run or 1 4 25. S grade 100 x 12 3 example roof picth 4 12 as grade. 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. These benefits do not come cheaply though.

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. Pitches of less than 2 12 are considered flat roofs even though they may be very slightly angled. Pitches above 9 12 are very highly angled and are designated steep slope roofs.

Image 1 12 to 12 12 roof pitch 7 12 pitch. The most commonly used roof pitches fall in a range between 4 12 and 9 12. S grade 100 4 12 33 3 roof pitch on the form x 12 can be expressed in angles as. Roof pitch is the slope created by the rafter.

There s always torch down but i don t do a lot of it and i don t own a torch. While roof slope is typically expressed in rise it can also be expressed in degrees or in percent of slope. Steeper sloped roofs are considered more aesthetically pleasing and last longer. Roof pitch degree table.

Roof pitch on the form x 12 can be expressed in grades as. A 2 12 roof slope means your roof has 2 inches of vertical drop for every 12 inches of horizontal distance. Pitches lower than 4 12 have a slight angle and they are defined as low slope roofs. What is a 2 12 roof pitch if a roof rises 2 in a length of 12 this is 2 12 roof pitch.

Anything more than 9 in 12 is considered steep. A 3 in 12 roof rises 3 for every 12 of run. If this isn t practical then perform the same measurement on the underside of the roof. 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.

The table below shows common roof pitches and the equivalent grade. That s the same as a 14 degree slope or a 25 slope.