How Do You Measure A Roof Of A Building

8 inches and you have an 8 in 12 pitch.

How do you measure a roof of a building.

So if you divide your answer of a product of length times height by two you will get the area of a triangle. Make sure to document the number of chimneys skylights or other obstructions and include dormers in your measurements. The length l times the height h of a triangle is twice its area a2. If you were to click on the peaks it wouldn t give you an accurate reading of your measurement.

Thus in a simple style house you ll only have to click on the corners. 3 multiply the amount of overhang by two to include the opposite side of the building. 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. It does have to contain all the straight lines of your roof and an accurate measurement of those lines.

Remember it doesn t have to be to scale or look pretty. Roughly draw out your roof on a piece of paper. In the united states a run of 12 inches 1 foot is used and pitch is measured as the rise of the roof over 12 inches. Measure the amount of horizontal overhang between the building s outer wall and the roof s outer edge.

Outside of the u s a degree angle is typically used. For example what we need on the picture of the roofs below are measurements of all the blue or red lines. For instance a 7 12 roof pitch means that the roof rises 7 inches for every 12 horizontal inches. First measure the length and width of each surface on the roof then multiply these values to get the square footage of that surface.

Calculating an area of a triangle when estimating a roof. If this distance measures 4 inches you have a 4 in 12 pitch. 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.