Height Of Roof Feet

The pitch of a roof determines the height of the ridge board that runs the length of the house.

Height of roof feet.

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. 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. For example if the roof rises 4 feet and the span is 16 feet twice the run then the pitch is 4 16 or 1 4. 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.

A 1 in 12 roof pitch roof rises 1 inch for every 12 inches of run. The total run is the distance from the peak to the edge of the roof which in this case is the total width divided in half which is equal to 10 feet or 120 inches. You will need to express this size in terms of square feet. Common rafter elevation if you are calculating rafter length from the center of the ridge beam as shown below you will need to subtract half of the thickness of the ridge beam from the top end of the rafter.

For example if the peak is 4 feet and the total roof with is 20 feet the total rise is 4 feet or 48 inches. Rafters are nailed to the ridge board and run down to overhang the exterior wall. Carpenters measure roof pitch as inches of rise per 12 inches of run.