Roof Pitch Slope Factor Chart

A 10 slope roof should not be confused with a 10 pitch roof as a 10 slope roof means that the roof rises by ten inches for every foot of run.

Roof pitch slope factor chart.

Slope factor chart know your pitch when outfitting your residential or commercial structure with roofing materials from everlast roofing inc it s important to know the incline or pitch of your roof. A roof pitch multiplier also called a roof pitch factor is a number that is multiplied by the area covered by a sloped roof to produce the area of the actual surface of the roof for roof slopes expressed as x in 12 rise in run the roof pitch multiplier is determined by finding the square root of rise run 1. The roof slope factor chart also consists of conversion factors to determine the slope of the roof. Roof pitch is a term describing how steep or flat your roof slope is.

The picture below shows the pitch of a 7 12 roof slope meaning that for 12 of horizontal measurement roof run the vertical measurement roof rise is 7. The minimum roof pitch for shedding snow is around 30 or a 6 12 or 7 12 slope although this is not a definite as the material of your roof the direction of the snow and wind are some factors that can affect whether or not snow will slide as roofs of as little as 10 have been reported to shed snow. Two most common methods 4 12 or 4 12 are used for marking the pitch of a roof. The headache of using pythagoras and trigonometry can be spared by making use of these charts.