Measure Roof Pitch From Attic

Place an ending of carpenter s level such that it touches the underneath of the rafter and regulate till the bubble s centered amid the two lines.

Measure roof pitch from attic.

Tools needed include a ladder level tape measure pencil and something to create a flat surface on the rooftop. 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. To measure the roof pitch you ll need an 18 or 24 inch level a tape measure and a pencil. He uses the rise over run method to calculate the roof slope based on the geometry of a right triangle.

First measure 12 inches from one end of the level and make a mark. You are able to measure a roof pitch either from the rafter within the attic a rafter s overhang in the roof or a barge rafter that is alongside the gable. Today on the metal roofing channel thad explains how to measure roof slope from the attic rooftop and gable. However if you have a more complex roof you may need to calculate pitch section by section.

After measuring the slope estimate the roof pitch by dividing the slope by 2 if you have a simple gable roof. Measure from the attic another method to find the roof pitch is to go into the attic and measure the rise for a 12 run of the roof rafters which allows finding the pitch without going on the roof.