Roof Pitch Slope Factor

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.

Roof pitch slope factor.

The slope factor works with metric and imperial measurements. 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. 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. This will give you the rise over run or pitch.

The roof slope factor chart also consists of conversion factors to determine the slope of the roof. 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 tile shingle slate and metal roofing roof pitch is a term used in the roofing industry to describe the angle slope of a roofing structure. The pitch of a roof is determined by 2 numbers.

For example if you measure 4 inches the pitch of your roof is 4 12. In construction the slope factor can be used to easily calculate the area of a roof. Roof area in square metres length in metres width in metres slope factor. Roof pitch refers to the slope which the rafter creates.

Most commonly a roof pitch will be from 0 flat to 12 45. Often you express roof pitch as the ratio between the rise and the run in the form of x 12. The rise and the length.