How do I Calculate the Pitch of a Roof?

Q.  How do I calculate the pitch of a roof?

A.  Roof pitch is a numerical measure of the steepness of a roof. The roof’s pitch is the measured vertical rise divided by the measured horizontal span or run. It is the same thing as what is called “slope” in geometry. The purpose of a pitched roof is to redirect rain or snow. In the United States, slope is typically given in inches per 1 foot, or as a ratio of inches per 12 inches, and commonly referred to with units of “pitch.” For a roof slope of 1/3, a “4 pitch” roof indicates 4 inches of rise over 1 foot of run; a “4:12 pitch” is 4 inches of rise over 12 inches of run. You can calculate roof pitch with the following formula: Roof pitch = (rise/run)x12.

Hot Product

fence trac
FenceTrac Fence Systems

FenceTrac is a revolutionary fence system that uses patented U-channel rails and metal posts to create a secure and sturdy frame for any type of infill. You can choose from wood, vinyl, composite, bamboo, metal, or any other material that fits your style and budget. You can also mix and match different infills to create […]