How To Measure A Triangle Roof

Find the dimensions of each of the roof s faces.

How to measure a triangle roof.

If you have a roof section that s 30 feet 9 1 m long and 12 feet 3 7 m high multiplying those dimensions would give you an area of 180 square feet 17 m 2. Locate the level s 12 inch mark. The length l times the height h of a triangle is twice its area a2. Pitch measurement method 1 1.

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. So if you divide your answer of a product of length times height by two you will get the area of a triangle. If the roof has a triangular shape stretch your tape measure along the bottom edge then measure from the peak point down to the center of the bottom edge. 8 inches and you have an 8 in 12 pitch.

Use a level against the underside of the rafter you re measuring to get the most accurate value. If this distance measures 4 inches you have a 4 in 12 pitch. For example if the roof slopes up from the front of a. 1 roof square 100 square feet.

The most precise way to find the roof s slope is by measuring it from the underside. L 30 feet h 12 feet 30 12 2 180 square feet. For trapezoidal roofs measure the bottom edge the top edge also known as the ridge and the distance between the 2 edges. The basic formula for finding the area of a triangle is the base times the height in this case the distance between the base and the peak.