How much does pitch add to a roof?

How much does pitch add to a roof?

A low-slope roof might cost 10% more to install than a flat-roof, while a steep-slope roof might cost 20-30% more. Roofs with a very steep pitch might cost even more than that to install.

What is the rise on a 3/12 pitch?

It is the most common way in US and Canada to describe a roof’s basic quality – slope or steepness. Roof pitch is represented in inches rise of 12 inches run. For example a “3 pitch” or “3 in 12 pitch” or “3/12 pitch”, all mean that the roof rises 3 inches, for every 12 inches of it’s horizontal run.

What are the angles of a 3/12 pitch?

Roof Angle Chart

Pitch Angle
2/12 9.46*
3/12 14.04*
4/12 18.43*
5/12 22.62*

What is the slope of a 3/12 roof?


Pitch of Roof Slope Factor Valley & Hip Factor
1:12 1.0035 1.4167
2:12 1.0138 1.4240
3:12 1.0308 1.4362
4:12 1.0541 1.4530

Is a 3/12 roof pitch good?

Any roofs up to 3:12 are generally considered “low slope.” In the residential arena, we see lower slope roofs as part of the home’s architectural design. We also sometimes see low slope roofs on just certain areas of a home such as porches.

Is 3/12 A good roof pitch?

How much is a 3/12 slope?

A 3/12 roof pitch angle is about 14°, so on and so forth. 4/12 is quite typical. Anything under 3/12 is a low pitch roof. Anything above 6/12 is a steep roof pitch since it becomes harder to walk on the roof.

Can you Shingle a 3/12 pitch roof?

Shingles can be installed on low-sloped roofs with a pitch of 3/12 inches. However, it will require additional layers under the shingles, such as a double layer of asphalt-saturated felt paper or a single layer of ice and water shield.

How is roof pitch calculated?

The angle, or pitch, of a roof is calculated by the number of inches it rises vertically for every 12 inches it extends horizontally. For example, a roof that rises 6 inches for every 12 inches of horizontal run has a 6-in-12 pitch.

Can you shingle a 3/12 pitch roof?

How do you use pitch factor?

The roof pitch is a measure of roof steepness. The pitch is defined as the slope of the roof, and is commonly represented as the ratio of the RISE over the RUN in the form x/12….What is the roof pitch factor?

Roof Pitch Angle Roof Pitch Factor
1/12 4.76° 1.0035
2/12 9.46° 1.0138
3/12 14.04° 1.0308
4/12 18.43° 1.0541

What is the best pitch for a metal roof?

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.

Can I shingle a 3/12 pitch roof?