How Do U Figure Square Feet Of A Roof

Depending whether the roof area is measured horizontally possibly from a drawing or photograph a correction factor is necessary to determine the actual area of the roof.

How do u figure square feet of a roof.

If you measured in feet inches divide inches by 12 and add that to your feet measure to get total feet. The top ridge will be shorter than the one of the gable roof but the four hips will add to the ridge length. L h 2 area calculating an area of a triangle when estimating a roof. Include dormers the small outjuttings over attic windows.

Multiply the length by the width to arrive at. 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. Measure the ground dimensions of the house using a tape measure and write down these dimensions. If you measured in feet skip to calculate the area as square footage.

1square of roofing covers 100 square feet of roof a bundle is 1 3 of a square. The square footage of a hip roof area is identical to the square footage of a gable roof of the same size. A square simply refers to a 10 x 10 square of roofing. Calculate each plane separately.

Get the square footage of roof and divide it by 100 and it will give the number of squares you need and for every decimal number over 3 buy a bundle to achieve the amount of material. If you measured in another unit of measure do the following to convert to feet. Divide by 12 and that is your measurement in feet. The only difference in this calculation to the one for a gable roof area is the amount of the ridge.

Thus a moderate 6 in 12 roof pitch means that the roof rises 6 inches vertically for every 12 horizontal inches it runs. For instance if the roof is 1550 square feet then it is 16 squares. To find the squares divide the overall roof area by 100 and then round up. This is simply 100 square feet of roof.

Convert the area to roofing squares. Because each 100 square feet of roof is one roofing square divide. How to calculate square feet of a roof. The length l times the height h of a triangle is twice its area a2.

Measure the length and width of every roof plane or surface. So if you divide your answer of a product of length times height by two you will get the area of a triangle. The first step in a free roofing estimate is measuring the roof dimensions. 1 roof square 100 square feet.

Multiply the length and width of each square or rectangle shaped plane. Given pitch and a horizontal area measurement multiply the horizontal area by a correction factor corresponding to pitch provided in the table below to determine the actual area of the roof to be used in the roofing material calculator. You will need to express this size in terms of square feet.