While in the 3 foot wide material we only need 177 feet and 8 inches of linear material.
Roofing linear meter.
Find the square footage of the roof.
And if you know the total area to cover you can calculate the length of material at a given width to fit the area.
If you have a simple gable roof you ll only need to measure and sum up the 2 planes of the roof.
In the attic place the level against a rafter with the 12 inch mark on the bottom of the rafter.
For instance a 7 12 roof pitch means that the roof rises 7 inches.
Roofing materials are typically packaged in squares each of which is the equivalent of 100 square feet 9 3 m 2 of roof space.
All metric inputs in millimetres unless otherwise noted.
Roof pitch is the measurement of a roof s vertical rise divided by its horizontal run.
For example if the length is 21 feet and the width is 10 feet the surface area is 210 square feet 21.
This distance is the roof s rise.
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Roof slope style.
Measure from the end of the level up to the bottom edge of the rafter.
Dividing the total area of your roof by 100 will therefore help you figure out how many squares worth of shingles to order.
A 12 in 12 pitch is a steep 45 degree angle roof.
Pitch measurement method 3.
If your material comes in set widths you can calculate the area a given total length of this material will cover.
Measure the length and width of each portion of the roof multiply length by width for each plane and then add the planes together for the total square footage.
For a 12 000 sq ft 1 100 m 2 roof you ll need a minimum of 120 squares.
The overall length for this roof is 26 feet so for the 2 foot wide material divide 266 5 linear feet by 26 feet and the result is 10 25 pieces or 11 pieces of metal roofing 2 foot wide by 26 feet long.
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.
That is the roof s rise.
Linear ft of panels in your order 12 inch 18 inch 24 inch 50 270 180 135 100 540 360 270 200 1080 720 540.
Linear meters measures length.
Multiply the length of the roof by the width to establish the surface area in square feet.
A roof s pitch is determined by how much it rises for every foot it runs.