How To Figure A Roof Square Foot

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.

How to figure a roof square foot.

Gambrel roof square footage calculator calculate the square footage of a gambrel style roof using imperial measurements. The lower slope length is measured from outside wall to the start of the upper sloped roof section. Roof pitch is given as the number of inches in height change over the distance of one foot. Dividing the total area of your roof by 100 will therefore help you figure out how many squares worth of shingles to order.

To find the squares divide the overall roof area by 100 and then round up. Divide your roof pitch by 12. Outside of the u s a degree angle is typically used. 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.

1square of roofing covers 100 square feet of roof a bundle is 1 3 of a square. Keep in mind that the average size of a roof is 1 700 square feet so your total will likely be 10 higher or lower than this figure. For instance a 7 12 roof pitch means that the roof rises 7 inches for every 12 horizontal inches. You will need to express this size in terms of square feet.

Roofing materials are typically packaged in squares each of which is the equivalent of 100 square feet 9 3 m 2 of roof space. This is simply 100 square feet of roof. If the house has an irregular shape measure each part separately figure the separate areas and add them together. If this distance measures 4 inches you have a 4 in 12 pitch.

Dividing by 12 gives the ratio of inches in rise per distance. Pitch measurement method 1. A square simply refers to a 10 x 10 square of roofing. Convert the area to roofing squares.

8 inches and you have an 8 in 12 pitch. For instance if the roof is 1550 square feet then it is 16 squares. The first step in a free roofing estimate is measuring the roof dimensions.