Figuring Roof Pitch

Rise run pitch where pitch is expressed in percent.

Figuring roof pitch.

Here s an easy safe way to determine the pitch from inside your attic. Knowing the pitch of your roof is useful when designing an addition installing skylights or cutting new rake boards. Roof pitch refers to the slope which the rafter creates. The easiest way to do this is by accessing a rafter in your attic if you can.

How to calculate the pitch of a roof. How to measure roof pitch. 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. The roof pitch is important in determining the appropriate installation method and how much roofing material will be needed.

You can use the following equations to find the length of the rafter and the slope. To measure the roof pitch you ll need an 18 or 24 inch level a tape measure and a pencil. How to calculate roof pitch. Rafter rise run from the pythagorean theorem.

After measuring the slope estimate the roof pitch by dividing the slope by 2. Often you express roof pitch as the ratio between the rise and the run in the form of. Homes and other buildings have roofs with slopes ranging from no slope or flat to very steep slopes. Roof pitch calculator results explained.

Roof pitch is used to describe the slope or angle of the roof. Slope the slope of a roof is represented as x 12 where x is the number of inches in rise for every 12 inches of run this is very useful information for many purposes especially for roof framing the slope sometimes called pitch is calibrated on speed squares. How do you calculate a roof pitch. Angle the angle of a roof is the same as the roof s slope except instead of being.