How To Measure Square Footage Of A Flat Roof

Simply input the surface area of the roof choose from one of the available options and you will get your first roofing estimate. Multiply the length and width of each square or rectangle shaped plane. Make sure to document the number of chimneys skylights or other obstructions and include dormers in your measurements.

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Next you will need to use a roofing materials calculator.

How to measure square footage of a flat roof.

A square simply refers to a 10 x 10 square of roofing. How to calculate square feet of a roof. After that place your level against the gable trim and flat against the side of the house. Convert the area to roofing squares.

Check that your footage measurements are within this range so you can start off on the right foot. 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. First use your measuring tape to measure 12 inches on your large level and make a mark at the 12 inch line. Calculate each plane separately.

1 roof square 100 square feet. Because each 100 square feet of roof is one. Steep roofs measure your house at ground level then add in the roof s overhang for greater accuracy. To find the squares divide the overall roof area by 100 and then round up.

Climb to the top of your roof. L h 2 area calculating an area of a triangle when estimating a roof. This is simply 100 square feet of roof. Next place your ladder against your house at the gable end.

Flat roofs if your roof is flat or has no more than a 3 in 12 pitch you can calculate its total square footage by simply multiplying the length by the width. 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. For instance if the roof is 1550 square feet then it is 16 squares. 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.

Measure the length and width of every roof plane or surface. If the house has an irregular shape measure each part separately figure the separate areas and add them together. So if you divide your answer of a product of length times height by two you will get the area of a triangle. The length l times the height h of a triangle is twice its area a2.

Include dormers the small outjuttings over attic windows.