Roof pitch is the measurement of a roof s vertical rise divided by its horizontal run.
Square footage of roof with pitch.
Roof pitch is given as the number of inches in height change over the distance of one foot.
It is often compared to slope but is not exactly the same.
Dividing by 12 gives the ratio of inches in rise per distance.
A 12 in 12 pitch is a steep 45 degree angle roof.
A roof s pitch is determined by how much it rises vertically for every foot it runs horizontally.
Things you will need steel tape measure.
Roof pitch is used to describe the slope or angle of the roof.
The roof pitch is important in determining the appropriate installation method and how much roofing material will be needed.
Multiply the square footage of your roof by 1 to get the 10 percent waste allowance.
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.
Roof is 6 12 pitch and measures at 2 400 square feet so 2400 x 1 12 2 688 2 88 sqs added for pitch.
A roof with a 6 rise for every 12 run has a 6.
Depending on the pitch additional equipment may also be necessary.
Get your roof size by using this roof pitch calculator.
To conclude the example if your total roofing area is 17 300 square feet your waste allowance would be 17 300 x 1 1 730 square feet.
1square of roofing covers 100 square feet of roof a bundle is 1 3 of a square.
Thus a moderate 6 in 12 roof pitch means that the roof rises 6 inches vertically for every 12 horizontal inches it runs.
Multiply the number of roofing squares for a medium pitch roof by 1 12 to 1 25 or by 1 3 to 1 42 for a high pitch roof to get the square roof area.
Foam roofing costs 4 50 per square foot installed and an additional 1 63 sf to remove the original roof bringing it to 6 85 per square foot to account for roof pitch.
A steep roof pitch can add to the cost of installation as it will be more time consuming to work on a steeper pitch.
Estimate per square foot.
Roof pitch or slope is a measure of vertical rise to horizontal run expressed in inches per foot.
The total amount of roofing material you need is 17 300 1 730 19 030 square feet.
4 7.
See the image below for more explanation on rise run and pitch.