Garage Roof Pitch Angle

Roof pitch and corresponding angles.

Garage roof pitch angle.

Pitch angle incline slope they all can be used to refer to the steepness of a roof. A roof s pitch is determined by how much it rises vertically for every foot it runs horizontally. In the roofing trade the go to term is pitch and it is expressed in terms of 12 inches so the pitch of a roof is determined by how many inches the slope rises for every 12 inches it runs horizontally. Roof pitch refers to the amount of rise a roof has compared to the horizontal measurement of the roof called the run.

In the united states a run of 12 inches 1 foot is used and pitch is measured as the rise of the roof over 12 inches. See the image below for more explanation on rise run and pitch. First convert the pitch to a slope. A ratio is the most common way of expressing roof pitch or roof slope but degrees are also possible.

You can assess this in two ways either as the roof pitch angles which the rafters make with the horizontal or the proportion between the run and the rise of the roof. For instance a 7 12 roof pitch means that the roof rises 7 inches for every 12 horizontal inches. Outside of the u s a degree angle is typically used. Roof pitches exceeding the level of 9 12 or approximately 37 degrees are termed steep slope roofs.

Roof pitch refers to the slope which the rafter creates. Pitches lower than 4 12 have a slight angle and they are defined as low slope roofs. Often you express roof pitch as the ratio between the rise and the run in the form of x 12. A 12 in 12 pitch is a steep 45 degree angle roof.

The way pitch also known as roof slope is measured is rise over run. To do this simply convert the rise and run as a fraction to a decimal form eg. So if your roof rises 4 inches for every 12 inches of horizontal length then the pitch of your roof is expressed as 4 12. These are utilized in residential applications.

To find the angle of a roof in degrees convert the pitch to a slope then convert to degrees by finding the arc tangent of the slope. Roof pitch is the measurement of roof steepness. Pitches of less than 2 12 are considered flat roofs even though they may be very slightly angled. Some of the most common roof pitch types are conventional slope type roofs designed with pitch ranging from 4 12 to 9 12.

The most commonly used roof pitches fall in a range between 4 12 and 9 12. To see how pitch impacts the look of a garage and changes cost click the design center button on our pole barn kits page. Pitches above 9 12 are very highly angled and are designated steep slope roofs. Thus a moderate 6 in 12 roof pitch means that the roof rises 6 inches vertically for every 12 horizontal inches it runs.