A 2 12 roof slope means your roof has 2 inches of vertical drop for every 12 inches of horizontal distance.
2 12 roof grade.
Why is the roof slope 25.
S grade 100 x 12 3 example roof picth 4 12 as grade.
That s the same as a 14 degree slope or a 25 slope.
These benefits do not come cheaply though.
Asphalt shingles continue to be the most widely installed roof covering option in north america.
Roof pitch degree table.
I didn t want the rental expense not to mention the risk of using an open flame on a combustible roof surface.
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.
While roof slope is typically expressed in rise it can also be expressed in degrees or in percent of slope.
Roof pitch is the slope created by the rafter.
3 of rise per 12 of run is the same as 1 of rise per 4 of run or 1 4 25.
A low slope roof is anywhere from 2 in 12 to 4 in 12.
What is a 2 12 roof pitch if a roof rises 2 in a length of 12 this is 2 12 roof pitch.
Image 1 12 to 12 12 roof pitch 7 12 pitch.
Pitches above 9 12 are very highly angled and are designated steep slope roofs.
The table below shows common roof pitches and the equivalent grade.
Common roof pitches and equivalent grade degree and radian angles.
Pitches lower than 4 12 have a slight angle and they are defined as low slope roofs.
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.
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.
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.
Pitches of less than 2 12 are considered flat roofs even though they may be very slightly angled.
There s always torch down but i don t do a lot of it and i don t own a torch.
2 12 roof pitch angle 9 46 degrees.
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.
The most commonly used roof pitches fall in a range between 4 12 and 9 12.
We included a roof pitch chart below the 7 12 example image and the calculator below that.
Steeper sloped roofs are considered more aesthetically pleasing and last longer.
A 3 in 12 roof rises 3 for every 12 of run.
Most roof s have a pitch in the 4 12 to 9 12 range.
A 12 in 12 roof can cost up to 50 more than a 4 in 12 roof.
Conventional slope roof range between 4 in 12 and 8 in 12.
