The minimum pitch for roll roofing is 2 12 or 2 inches rise to 12 inches run.
How much pitch on 12 foot roof.
If this distance measures 4 inches you have a 4 in 12 pitch.
A 4 12 pitch being 4 inches of vertical rise over one foot or 12 inches of horizontal run.
The minimum pitch for a standing seam metal roof is 1 4 or 3 inches rise to 12 inches run.
One engineer recommends a 12 12 pitch for the new roof while another recommends a 7 12 pitch.
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.
In roofing it is expressed in inches of vertical rise over inches of horizontal run.
8 inches and you have an 8 in 12 pitch.
There are advantages and disadvantages to having a steep pitch versus a shallow or low pitch the most obvious of which is the roof s ability to shed or withstand heavy snow rain or wind.
A a roof with a 6 rise for every 12 run has a 6 per foot or 6 in 12 pitch.
Roof pitch or slope is a measure of vertical rise to horizontal run expressed in inches per foot.
The roof pitch is important in determining the appropriate installation method and how much roofing material will be needed.
This measurement is best done on a bare roof because curled up roofing shingles will impair your measurement.