Measure Roof Slope Angles

Check the surface of the.

Measure roof slope angles.

The gentle slope of a 4 12 roof pitch falls on the cusp between moderate pitch and low pitch. Take a measurement of 12 inches using a level. 3 12 1. 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.

Before taking any measurements you must first confirm that it s safe to walk on your roof. First convert the pitch to a slope. Roof slope expressed as rise run in inches. A 4 12 roof pitch is referred to as the roof rises 4 inches in height for every 12 inches as it measured horizontally from the edge of the roof to the centerline.

0 12. For example if the level is four inches from the soffit and the 12 inch mark the pitch. 0 or 180 0. Easy to walk on.

Roof slope expressed as an angle. Measure from the top of the level at the 12 inch mark up to where the tape measure touches the soffit again. Take the measurement of the vertical. What is the pitch of a 30 degree roof.

Common roof slopes expressed in rise run and angle slope expressed as grade. To do this simply convert the rise and run as a fraction to a decimal form eg. 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. Rise run rise run slope.