1 5 12 Roof Pitch

Clay or cement tiles can be used on a wide range of roof pitches.

1 5 12 roof pitch.

The basic ranges of pitch are not uniformly defined but range from flat which are not perfectly flat but sloped to drain water up to 1 2 12 to 2 12 1 in 24 to 1 in 6. The table below shows common roof pitches and the equivalent grade degrees and radians for each. A 4 12 is a roof slope that rises by 4 inches for every 12 inches across. Roof pitch degree table.

Note that roof pitch is sometimes used in parallel with roof slope. We included a roof pitch chart below the 7 12 example image and the calculator below that. 0 pitch 1 00x the roof area. The roof 50 squares has some complexity because of a 45 degree house section and a chimney.

However roof pitch is technically measured and defined differently. The contemporary house with cathedral ceilings has a 1 5 12 pitch. This means if a roof rises 4 in the length of 12 your roof pitch would be 4 12 or 18 43 degrees. You can go by the measurements taken by walking the roof.

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. I live in southwest ohio. Conventional from 4 12 1 in 3 to 9 12 3 in 4. It is a planks on rafters roof that was originally tar and gravel.

Now i am told that reroofing with shingles is counterindicated because of the low slope. 2 5 12 to 19 12 pitches. I e 4 inches of rise per 12 inches one foot of run. Since this is a flat roof or nearly flat roof.

1 pitch 1 01 2 pitch 1 02 3 pitch 1 03 4 pitch 1 05 5 pitch 1 085 6 pitch 1 12 7 pitch 1 16 8 pitch 1 21 9 pitch 1 25 10 pitch 1 31 11 pitch 1 36 12 pitch 1 42. Image 1 12 to 12 12 roof pitch 7 12 pitch. For pitches of 2 5 12 up to 4 12 the roof requires double underlayment. The house has had a shingle roof since it was build in 1955.

If a roof slope rises say 4 inches when measured 12 inches along the bottom of a horizontal roof truss the roof slope is said to be 4 12. Slopes above 19 12 are not recommended since tiles on very steep roofs can rattle. What is a 4 12 roof pitch. On blue prints architects engineers usually display the pitch of a roof in the format shown on the image where number 4 represents a rise and number 12 represents a length.

1 5 12 pitch roof return to is a metal roof right for my house. If this isn t practical then perform the same measurement on the underside of the roof. We have a prairie style house in east tennessee mixed humid climate zone 4a built in the 1950s with a low slope roof pitch of 1 5 per 12.