How To Measure Roof Pitch From Inside

First measure 12 inches from one end of the level and make a mark.

How to measure roof pitch from inside. Use a level against the underside of the rafter you re measuring to get the most accurate value. To use this method there are 3 possible places to take your measurements. Measure the rise of your roof. Let s assume it is equal to 6 m.

Let s say it is equal to 1 5 m. Roof slope calculator example of use. The most precise way to find the roof s slope is by measuring it from the underside. The overhang of a rafter at the end of the roof.

Measuring from the underside of the roof is usually the most accurate way to find the slope since there is no roofing material to make an uneven surface. Roof pitch angle in degrees the measurements are taken from the bottom of the rafters the procedure to calculate roof pitch is the same. Place a level against the rooftop a few feet in from the edge and angle it so that the floating bubble is centered then measure the distance from the end of the level to the surface of the roof. 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.

This method tends to be more accurate because no layers of roofing are involved. Any of the following will give you a good measurement 1 x research source a rafter in the attic. A barge rafter at the side of the gable step 2 position a level against the underside of the rafter. Calculate the rafter length substituting these values.

Measure the run length it is the horizontal distance between the roof ridge and the wall of the building. Pitch measurement method 1 1. If this distance measures 4 inches you have a 4 in 12 pitch. Using ruler and tape you can do it anyway of these ways.

Then in the attic place the end of the level against the bottom of a roof rafter and hold it perfectly level. How to measure roof pitch to measure the roof pitch you ll need an 18 or 24 inch level a tape measure and a pencil. To find the pitch of your roof you ll first need to set up a ladder tall enough to reach it. To determine the y height measure from the bird s mouth up the calculated slope x in 12 to the top of the rafter.

Access one of the rafters then take the measurement this way. 8 inches and you have an 8 in 12 pitch. Pitch is expressed as x in 12 inches. Locate the level s 12 inch mark.

On a ladder at the walled part of the pitched roof place the level against the roof overhang rafter with the 12 inch. Roof pitch calculator results explained. The top of the ridge beam m y. Place one end of a carpenter s level against the underside of the.