To calculate the roof area if you have a seat roof.
How to measure the area of your roof.
That measurement is the number of inches the roof rises in 12 inches.
Calculate the pitch of the roof.
To find the pitch of your roof you ll first.
Some homes will have roofs with multiple pitches.
The length l times the height h of a triangle is twice its area a2.
Each time you add points the area will update and there is a box below that will convert this into acres meters kilometers miles and finally square feet.
Pitch measurement method 1.
The pitch is the steepness of the roof.
The highest point of a roof.
Next place your ladder against your house at the gable end.
After you ve done this you can click along the outer edge of the roof that you wish to calculate the area for.
So if you divide your answer of a product of length times height by two you will get the area of a triangle.
L 30 feet h 12 feet 30 12 2 180 square feet.
And that s the number you were looking for.
Front of the roof 12 x 6 72 square meters m.
Measuring your roof from the ground 1.
Therefore mark off 12 inches on the level and place it down horizontally against the roof rafter.
Divide the area you calculated in step 4 by 100.
If this distance measures 4 inches you have a 4 in 12 pitch.
Take the area of the roof s footprint say it s 5 000 square feet and multiply 5 000 by 1 118.
First use your measuring tape to measure 12 inches on your large level and make a mark at the 12 inch line.
Find the length and width of the building s exterior walls.
And for a roof with a slope of 6 12 that number 1 118 is your roof slope multiplier.
It will also give you the perimeter of the shape of the roof.
In the construction industry roofs are measured in squares one square equals 100 square feet.
Climb to the top of your roof.
8 inches and you have an 8 in 12 pitch.
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.
Stretch your tape measure along the walls from end to end.
Use a pitch.
1 roof square 100 square feet.
Back of the roof 12 x 6 72 square meters m.
Next measure vertically from the 12 inch mark on the level straight up to the underside of the rafter as illustrated below.
That gives you 5 590 square feet which is the actual area of the surface of the roof.
To calculate the area of your roof first you ll need to calculate the pitch of it.
Measure the width and length of each side of the roof.
