How To Measure Roof Pitch From Inside

A barge rafter at the side of the gable step 2 position a level against the underside of the rafter.

How to measure roof pitch from inside.

To determine the y height measure from the bird s mouth up the calculated slope x in 12 to the top of the rafter. 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. Let s say it is equal to 1 5 m. 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.

Using ruler and tape you can do it anyway of these ways. Let s assume it is equal to 6 m. Pitch is expressed as x in 12 inches. 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.

Roof slope calculator example of use. First measure 12 inches from one end of the level and make a mark. Measure the rise of your roof. Pitch measurement method 1 1.

To use this method there are 3 possible places to take your measurements. Calculate the rafter length substituting these values. The overhang of a rafter at the end of the roof. To determine the finished height of the ridge beam add the rise m and the y height.

Locate the level s 12 inch mark. 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. Measure the run length it is the horizontal distance between the roof ridge and the wall of the building. The most precise way to find the roof s slope is by measuring it from the underside.

Access one of the rafters then take the measurement this way. The top of the ridge beam m y. To find the pitch of your roof you ll first need to set up a ladder tall enough to reach it. Place one end of a carpenter s level against the underside of the.

Step 1 access a rafter. Placing a ladder near the roof you will put a level a foot or so up on the roof hold it level and measure from the. This method tends to be more accurate because no layers of roofing are involved. Use a level against the underside of the rafter you re measuring to get the most accurate value.

Any of the following will give you a good measurement 1 x research source a rafter in the attic. 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. Then in the attic place the end of the level against the bottom of a roof rafter and hold it perfectly level.