Roof Multiplier For Pitch

A roof pitch multiplier also known as a roof pitch factor is a number that when multiplied by the area covered by a sloped roof gives the actual area of the roof.

Roof multiplier for pitch.

And for a roof with a slope of 6 12 that number 1 118 is your roof slope multiplier. That gives you 5 590 square feet which is the actual area of the surface of the roof. 2280 1900 380 feet added for pitch. Get your roof size by using this roof pitch calculator.

Enter your numbers into this go to roof pitch calculator. So the actual roof surface if it were laid down flat on the ground would be 1 118 times larger than the footprint of the roof. One method to find the pitch is to climb on the roof and measure the rise for a 12. Let s assume the pitch is 8 12.

For this example let s assume your roof covers an area that is 20 feet wide and. Take your area result and multiply it by the pitch multiplier or slope correction factor found in the table above to arrive at the roof s surface area. Step 2 find the value of 7 12 from the roof slope multiplier table which is 1 16. Measure from the attic.

Calculate the slope of the roof. Step by step example using the roof pitch multiplier table measure the area covered by the roof. Another method to find the roof pitch is to go into the attic and measure the rise. Measure from the roof.

If the home measures 20 x 40 and has a 7 12 roof then to calculate the slope of the roof follow these steps. Step 1 multiply 20 and 40 which equals 800. A roof pitch multiplier also called a roof pitch factor is a number that is multiplied by the area covered by a sloped roof to produce the area of the actual surface of the roof. The maths behind this number is that it is the square root of rise run 2 1.

Now you re ready to price out the materials. Take the area of the roof s footprint say it s 5 000 square feet and multiply 5 000 by 1 118. How to calculate the pitch of a roof method one.