How To Measure Roof Sq Ft

Pitch measurement method 1.

How to measure roof sq ft. For instance a 7 12 roof pitch means that the roof rises 7 inches for every 12 horizontal inches. A square simply refers to a 10 x 10 square of roofing. To find the squares divide the overall roof area by 100 and then round up. 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 length l times the height h of a triangle is twice its area a2. 1 roof square 100 square feet. Include dormers the small outjuttings over attic. So if you divide your answer of a product of length times height by two you will get the area of a triangle.

For instance if the roof is 1550 square feet then it is 16 squares. This number will provide you the level area beneath the roof. Next you will need to use a roofing materials calculator. How to calculate square feet of a roof step 1.

Measure the ground dimensions of the house using a tape measure and write down these dimensions. 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. Convert the area to roofing squares. Multiply the length by the width to arrive at.

L h 2 area calculating an area of a triangle when estimating a roof. For example if your home is 60 feet long and 40 feet wide you would multiply the length by the width and come up with 2 400 square feet. Multiply the length and width of each square or rectangle shaped plane. 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.

Measure the length and width of every roof plane or surface. If this distance measures 4 inches you have a 4 in 12 pitch. This is simply 100 square feet of roof. 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.

The roof surface area would be 24. Calculate each plane separately. 8 inches and you have an 8 in 12 pitch. Because each 100 square feet of roof is one roofing square divide.

Outside of the u s a degree angle is typically used. To convert the square footage to roof squares divide the square footage by 100.