What does a 9/12 roof pitch mean?

If a roof rises 9″ in a length of 12″, this is 9/12 roof pitch. 9/12 roof pitch angle = 36.37 degrees.

Is a 9/12 roof steep?

A 9/12 roof pitch (36.37 degrees). is the steepest standard slope. Anything above a 9 over 12 is considered steep slope.

What is the slope of a roof that has a pitch of 9 in 12?

Chart: Slopes in Degrees Converted to Standard Roof Pitch

Convert Roof Slope from Degrees to Rise-in-Run
1.473 in 12
1.687 in 12
1.901 in 12
10° 2.116 in 12

What is the most common roof pitch?

Conventional slope roofs are most common with residential roofs. This means the slope has a pitch between 4/12 and 9/12 on most homes. Roofs with a pitch exceeding 9/12 are called steep slope roofs.

What roof pitch looks best?

For metal panel roof systems, NRCA recommends slopes of 1/2:12 or more for structural panel systems and 3:12 or more for architectural panel systems. For asphalt shingle, clay and concrete tile, metal shingle, slate and wood shake and shingle roof systems, NRCA recommends slopes of 4:12 or more.

INTERESTING:  You asked: What thickness of plywood should you use on a roof?

What roof pitch is considered steep?

OSHA defines a “steep roof” as any roof with a rise/run ratio over 4:12 (18.43 degrees). While most standard-pitched residential roofs seldom exceed a 12:12 pitch (45 degrees), the landscape is occasionally marked by a design which harkens back to earlier times, when much greater roof pitches were more common.

What pitch is too steep to walk?

Common Roof Slopes Expressed in Rise/Run and Angle + Slope expressed as Grade

Common Roof Slopes Expressed in Rise/Run and Angle + Slope expressed as Grade
Roof Slope Expressed as Rise / Run in Inches Roof Slope Expressed as an Angle Walkability
0 / 12 0 ° or 180 ° Easy to walk on
1 / 12 4.76 °
2 / 12 9.46 °

How do I calculate roof pitch?

How to Calculate Roof Pitch in Degrees

  1. First, you need to measure the run of your roof. …
  2. Next, you need to figure out the rise. …
  3. Now, divide the rise by the run. …
  4. Then, divide 1 by your tangent.
  5. Finally, multiply this result by 180/π and you’ve calculated your roof pitch!

What does a 2 12 roof pitch look like?

A 2/12 roof slope means your roof has 2 inches of vertical drop for every 12 inches of horizontal distance. Simply put, it’s a shallow roof. … A roof this shallow is likely to be found on a ranch house, a shed dormer or a porch.

What is the angle of a 7 12 pitch roof?

The following diagram will let you easily convert roof pitch to degrees; a 7:12 pitch equals 30.26 degrees.

What is the typical roof pitch for a ranch house?

Barb, Traditionally, Ranch style homes had a consistent low roof pitch. Usually a 4/12 either hipped, gabled or with a dutch gable. Occasionally you see a Ranch with a 6/12 but just as often they have a 3/12.

INTERESTING:  How much does metal roofing weigh?

What is the best roof pitch for snow?

Roofs in snowy climates should have a slope of at least a 10-degree pitch minimum. A steeper angled roof sheds the snow more quickly. While the angle of the roof helps shed snow, adding too many angles to the roof for a more aesthetic effect could cause structural problems with snow shedding in the wintertime.

What is the average roof angle?

For most home styles, roof pitches fall in a range 4/12 (a moderate) slope up to 8/12 (fairly steep). Examples of extreme slopes range from 1/4:12 (almost flat) to 12/12 (sloping down at a perfect 45-degree angle).

What is the lowest shingle pitch?

The minimum roof pitch for shingles is a 2:12 pitch.

If your roof is less than 2 vertical units (inches or feet) up for every 12 horizontal units out, it’s considered low slope.