This measurement is best done on a bare roof because curled up roofing shingles will impair your measurement.
One side slope roof elevation.
Sloped roof house elevation.
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.
If this isn t practical then perform the same measurement on the underside of.
Sometimes the shorter slope is less pitched than the longer side.
However from the wind uplift mitigation perspective a 7 12 roof slope can be considered as a two story building due to the higher overall steepness and profile of the roof.
Mono pitched roofs pitched here means a roof plane rather than a slope and implies it is not a flat roof mono pitched roof shed skillion lean to roof 2.
A roof with one slope historically attached to a taller wall.
We ll call this distance to peak.
Then calculate distance to peak x roof slope where roof slope is the rise run.
A roof slope of 7 12 is also good and can provide the additional benefit of helping minimize the effects of wind driven rain.
It has the upper ridge at the peak 2 slopes on each side and the added characteristic of one side s slope being noticeably longer.
For some houses this will be the center of the house for other roof styles it may not be the center.