Peak Roof Height

Carpenters measure roof pitch as inches of rise per 12 inches of run.
Peak roof height. This measurement is best done on a bare roof because curled up roofing shingles will impair your measurement. The run always remains constant at 12 inches. Per asce 7 the mean roof height h is defined as the average of the roof eave height and the height to the highest point on the roof surface except that for roof angles of less than or equal to 10 the mean roof height is permitted to be taken as the roof eave height. The top of the ridge beam m y.
A low slope roof is anywhere from 2 in 12 to 4 in 12. Conventional slope roof range between 4 in 12 and 8 in 12. 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. To determine the finished height of the ridge beam add the rise m and the y height.
As a reminder please don t forget to add height of rafter thickness of roofing material and ridge vent to the number that you ll get using our calculator. The pitch of a roof determines the height of the ridge board that runs the length of the house. Roof pitch calculator results explained. A 1 in 12 roof pitch roof rises 1 inch for every 12 inches of run.
If your goal is to only calculate the roof height do not enter any numbers in wall height field and only use building width and roof pitch fields.