Published at Wednesday, April 24th, 2019 - 09:38:10 AM. Roof Pitch. By Evonne Leduc.
Both pitch and slope indicate the incline of a roof, expressed as a proportion of the vertical to the horizontal. Since slope affects how roof systems are installed, including dictating which type of roof-covering material can be applied, understanding how to measure the slope of a roof may be valuable to a home inspector.
The slope of a roof affects its ability to shed water and determines the limits for using asphalt shingles. Most asphalt shingles may be used on roof slopes from 4:12 to 21:12, using standard application methods. Asphalt shingles may be used on slopes from 2:12 to 3.9:12, if special low-slope application procedures are followed.
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