How Do You Measure A Roof To Get The Square Footage

1 roof square 100 square feet.

How do you measure a roof to get the square footage.

If your roof measures 48 feet 15 m x 24 feet 7 3 m multiplying its length by its width would give you a square footage of 1 152 square feet 107 0 m 2. If you use ground measurements to determine your roof squares you will need to also compensate roof overhang and slopes to get an accurate count. So if you divide your answer of a product of length times height by two you will get the area of a triangle. Multiply the number of roofing squares for a medium pitch roof by 1 12 to 1 25 or by 1 3 to 1 42 for a high pitch roof to get the square roof area.

Then divide the total by 2 to get the square footage. The length l times the height h of a triangle is twice its area a2. Thus in a simple style house you ll only have to click on the corners. 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.

Things you will need steel tape measure. If you were to click on the peaks it wouldn t give you an accurate reading of your measurement. 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. How to calculate your roof square footage first measure the length and width of each surface on the roof then multiply these values to get the square footage of that surface.

Calculate the square footage of a gambrel style roof using imperial measurements. Outside of the u s a degree angle is typically used. The lower slope length is measured from outside wall to the start of the upper sloped roof section. For example if a triangle shaped roof plane measures 60 feet along the base and is 30 feet high we have 60 x 30 1 800 feet divided by 2 900 square feet for the triangle shaped plane.

Make sure to document the number of chimneys skylights or other obstructions and include dormers in your measurements. The roof surface area would be 24. L h 2 area calculating an area of a triangle when estimating a roof. For instance a 7 12 roof pitch means that the roof rises 7 inches for every 12 horizontal inches.