Peak Roof Height

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.

Peak roof height. Use the roof pitch to find the height of a roof peak. Conventional slope roof range between 4 in 12 and 8 in 12. This measurement is best done on a bare roof because curled up roofing shingles will impair your measurement. To determine the y height measure from the bird s mouth up the calculated slope x in 12 to the top of the rafter.

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. Roof pitch calculator results explained. 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 1 in 12 roof pitch roof rises 1 inch for every 12 inches of run. The run always remains constant at 12 inches. A flat roof has a slope of 2 in 12 or less.

Carpenters measure roof pitch as inches of rise per 12 inches of run.