How Do You Measure A Roof Of A Building

Outside of the u s a degree angle is typically used.

How do you measure a roof of a building.

3 multiply the amount of overhang by two to include the opposite side of the building. Then calculate the pitch of the roof by placing a level against it angling the level so the bubble is centered and measuring the distance between the end of the level and 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. Outline the roof at the points that are on the same level or elevation to ensure that you re getting an accurate calculation of your roofing measurements.

1 roof square 100 square feet. If you were to click on the peaks it wouldn t give you an accurate reading of your measurement. To measure a roof start by measuring the length and width of the building s exterior walls and multiplying them to get the area. Roughly draw out your roof on a piece of paper.

Measure the amount of horizontal overhang between the building s outer wall and the roof s outer edge. Remember it doesn t have to be to scale or look pretty. It does have to contain all the straight lines of your roof and an accurate measurement of those lines. For instance a 7 12 roof pitch means that the roof rises 7 inches for every 12 horizontal inches.

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. For example what we need on the picture of the roofs below are measurements of all the blue or red lines. The length l times the height h of a triangle is twice its area a2. If this distance measures 4 inches you have a 4 in 12 pitch.

Calculating an area of a triangle when estimating a roof. 8 inches and you have an 8 in 12 pitch. Pitch measurement method 1. Make sure to document the number of chimneys skylights or other obstructions and include dormers in your measurements.