Use our roof pitch calculator to find the pitch of your roof.
Roof pitch multiplier chart.
The roof pitch multiplier is the length of the hypotenuse divided by the run.
48 10 4 8.
Set the level on the edge of the speed square as shown below then.
Roof pitch multiplier chart.
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.
Next multiply the footprint of the roof by the multiplier below for your roof pitch to find the overall roof area.
Roof pitch multiplier c over b the chart gives a number of roof pitch multipliers for different roof slopes.
Just multiply the roof width by roof length and then the result should be multiplied by the use of the pitch multiplier.
Roof pitch area multipliers.
For example a 4 12 pitch roof that is 100 square feet.
Typically the steeper the roof is the higher the price will be.
Accurate roof calculations are achieved using this table and all you need to do is measure the roof width and length and then you are ready to do a roof pitch measurement.
Now divide the rise by the multiplier to get the pitch eg.
Determine how many square feet of roof area a building has by measuring from the ground.
The maths behind this number is that it is the square root of rise run 2 1.
How to find your what roof pitch category.
Simply locate a roof rafter board place the end of the level against the bottom edge and measure from the 12 inch mark vertically to the bottom edge of the rafter.
This will give you the rise over run or pitch.
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.
This roof pitch table displays a multiplier for adding for different roof pitches.
For roof slopes expressed as x in 12 rise in run the roof pitch multiplier is determined by finding the square root of rise run 1.
We included a roof pitch chart below the 7 12 example image and the calculator below that.
If you know the pitch of a roof you can use the numbers in the following pitch table to do the following.
Roof pitch how much to add.
Let s see how this works in a specific example.
Image 1 12 to 12 12 roof pitch 7 12 pitch.
The calculator above can handle much of this math.
The pitch of this roof is 4 8 12.
Understanding the roof pitch chart process.
100 1 054 105 4ft 2.
Roof pitch degree table.
If this isn t practical then perform the same measurement on the underside of the roof.
Measure with a speed square.
A speed square and level can be used to easily find the pitch of a roof.
