How To Measure Sq Feet Of Roof

Roof pitches in degrees.

How to measure sq feet of roof.

Next you will need to use a roofing materials calculator. Measure your house at ground level then add in the roof s overhang for greater accuracy. In cases where a roof has a complex shape such as in the image to the right measuring the dimensions and areas of each part of the roof to calculate total area will result in a more accurate measurement of area. Measure the length and width of every roof plane or surface.

Because each 100 square feet of roof is one. Multiply the length and width of each square or rectangle shaped plane. Calculate each plane separately. If the house has an irregular shape measure each part separately figure the separate areas and add them together.

This nominal square footage amount is then multiplied by a factor associated with the roof s pitch. 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 its pitch is 6 in 12 a pitch multiplier of 1 12 multiplying 1 152 sq ft 107 0 m 2 by 1 12 would give you an overall square footage of 1 290 square feet 120 m 2. The calculator cannot account for complex shapes based on a measurement of square footage alone.

Check that your footage measurements are within this range so you can start off on the right foot. As an example if your overhang is 12 inches you ll add 2 feet to the overall length and 2 feet to the overall width of the house. Convert the area to roofing squares.