How To Measure A Triangle Roof

Access one of the rafters then take the measurement this way.

How to measure a triangle roof.

For example if the roof slopes up from the front of a. 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. 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. Use a level against the underside of the rafter you re measuring to get the most accurate value.

Locate the level s 12 inch mark. 1 roof square 100 square feet. So if you divide your answer of a product of length times height by two you will get the area of a triangle. The most precise way to find the roof s slope is by measuring it from the underside.

Determine the distance from the edge of the roof to a point on the same plane directly under the highest point. 8 inches and you have an 8 in 12 pitch. 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. If this distance measures 4 inches you have a 4 in 12 pitch.

L 30 feet h 12 feet 30 12 2 180 square feet. Pitch measurement method 1 1. Record this as the roof width. 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.