How Do You Find The Area Of A Roof

That gives you 5 590 square feet which is the actual area of the surface of the roof.

How do you find the area of a roof.

Convert the area to roofing squares. Calculating the area true once you have your roof s pitch divide the number by 12. Roof pitch is given as the number of inches in height change over the distance of one foot. Take the area of the roof s footprint say it s 5 000 square feet and multiply 5 000 by 1 118.

Dividing by 12 gives the ratio of inches in rise per distance. For example if your measurement is seven inches the rise is expressed as 7 12 in roofing terminology. Both metric and imperial measurement systems are displayed in a popup menu over the results area. So if you divide your answer of a product of length times height by two you will get the area of a triangle.

8 inches and you have an 8 in 12 pitch. The calculated area is only an estimation. 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. And that s the number you were looking for.

The length l times the height h of a triangle is twice its area a2. 1 9 1. This applies to lengths as well as areas. Calculating an area of a triangle when estimating a roof.

For example if your roof s pitch is 4 in 12 you would divide 4 by 12. Calculate the square footage of a gambrel style roof using imperial measurements. Now you re ready to price out the materials. Divide your roof pitch by 12.

The answer is the number of roofing squares for the roof. 1 roof square 100 square feet. Pitch measurement method 1. Next square your result.

Measure the distance from the surface of the roof to the bottom of the level at the 12 inch mark. If your number is 1 3 squared would yield 1 9 after that add 1 to your number. Take your area result and multiply it by the pitch multiplier or slope correction factor found in the table above to arrive at the roof s surface area. If this distance measures 4 inches you have a 4 in 12 pitch.

This distance is the rise.