How To Find The Slope Or Pitch Of A Roof

This article series gives clear examples just about every possible way to figure out any or all roof dimensions and measurements expressing the roof area width length slope rise run and.

How to find the slope or pitch of a roof.

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. Once you know the roof slope multiplier for a particular slope you can use it to find the actual area of any size sloped roof with the same slope. The pitch is the measurement of the rise of the roof to the span of the roof and is expressed as a fraction. So in this case for every 12 inches the roof goes across horizontally b while rising 6 inches a there s actually 13 416 inches of roof c.

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 pitch of a roof is its slope find the pitch of the roof shown. This measurement is best done on a bare roof because curled up roofing shingles will impair your measurement. Roof pitch is used to describe the slope or angle of the roof.

Roof slope or pitch rise run area and other features. Although the terms pitch and slope are often used interchangeably they have two different meanings. 8 feet by 15 feet log on. Roof pitch or slope is a measure of vertical rise to horizontal run expressed in inches per foot.

The span of the roof is the distance from one wall s top plate to another wall s top plate stretching across the length of the roof. Slope is the correct term for the ratio of vertical to horizontal distance on a particular plane of the roof. Most people interested in roof pitch are actually measuring the slope which is the most useful measurement when considering roofing material and rainwater. Often you express roof pitch as the ratio between the rise and the run in the form of x 12.

The roof pitch is important in determining the appropriate installation method and how much roofing material will be needed. These articles explain various methods for measuring all roof data.