For example a 4 12 pitch roof that is 100 square feet.
Roofing square footage multiplier.
Plane 1 plane 2 24 000 sq.
Determine how many square feet of roof area a building has by measuring blueprints or plans.
Multiply the area by the pitch multiplier to get the roof s square footage.
First multiply the length by the width.
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.
For the total square footage of the roof.
Multiply 20 and 40 which equals 800.
If you know the pitch of a roof you can use the numbers in the following pitch table to do the following.
Many homes have an asphalt shingle roof but some have wood metal tile and slate which can be more expensive.
Then take the product of these two dimensions and multiply it by your pitch multiplier.
Roof surfaces are measured in squares a square is an area of roof which measures 100 square feet.
So continuing our example if you ve got a two story house with a total square footage of 2 700 square feet with each floor having.
It is often compared to slope but is not exactly the same.
If the home measures 20 x 40 and has a 7 12 roof then to calculate the slope of the roof follow these steps.
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.
800 multiplied by 1 16.
The average roof is 3 000 square feet or around 30 squares.
Next multiply the footprint of the roof by the multiplier below for your roof pitch to find the overall roof area.
Multiply step 1 and step 2 i e.
Roofing material is estimated by the square which is equal to 100 square feet.
Find the value of 7 12 from the roof slope multiplier table which is 1 16.
Determine how many square feet of roof area a building has by measuring from the ground.
Multiply by the square footage of a single floor of your house.
To determine the number of squares on the gable roof above simply divide its total of 24 000 square feet by 100.
100 1 054 105 4ft 2.
Roof pitch is the measurement of a roof s vertical rise divided by its horizontal run.
A roof pitch multiplier also called a roof pitch factor is a number that is multiplied by.
