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