How Do You Figure Out The Pitch Of A Roof

If you can t get to your attic you can measure slope on your rooftop as long as it s safe to go up there.

How do you figure out the pitch of a roof.

Pitch measurement method 1. One method to find the pitch is to climb on the roof and measure the rise for a 12 run. 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 your roof pitch is greater than 3 your roof is considered pitched read more about roof pitch at wikipedia.

The roof pitch measures the steepness of your shed roof and typically takes values from 1 to 12. After measuring the slope estimate the roof pitch by dividing the slope by 2 if you have a simple gable roof. 8 inches and you have an 8 in 12 pitch. Roof pitch refers to the slope which the rafter creates.

You can assess this in two ways either as the roof pitch angles which the rafters make with the horizontal or the proportion between the run and the rise of the roof. Then in the attic place the end of the level against the bottom of a roof rafter and hold it perfectly level. 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. If this distance measures 4 inches you have a 4 in 12 pitch.

This free roof pitch calculator will take your roof width see the picture and rise the height of the roof and will calculate the roof pitch both as numeric value. On the roof hold the level perfectly level and measure the height from the roof to the level 12 inches away from where the level touches the surface this will be the rise. You ll need a level that is 12 or longer and a tape measure. The value displayed as the rise will be your x.

Often you express roof pitch as the ratio between the rise and the run in the form of x 12. Pitch tan angle where angle is the roof pitch expressed in degrees. The easiest way to do this is by accessing a rafter in your attic if you can. Before you calculate roof pitch you ll need to measure the slope of your roof.

To measure the roof pitch you ll need an 18 or 24 inch level a tape measure and a pencil. First measure 12 inches from one end of the level and make a mark. If you want to find the roof pitch in the form of x 12 simply calculate the pitch and substitute 12 for the run length. On a ladder beside the roof place the level a foot or so up the roof hold it level and measure from the 12 inch mark on the level s bottom straight down to the roof.