Get the square footage of roof and divide it by 100 and it will give the number of squares you need and for every decimal number over 3 buy a bundle to achieve the amount of material.
How much is a square foot of roofing.
Now in order to determine how many squares are there on the gable roof for example all you need to do is divide the total square footage by 100.
1square of roofing covers 100 square feet of roof a bundle is 1 3 of a square.
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.
Most homeowners spend between 1 500 and 3 000 total when hiring a professional and the cost goes up from there for high end materials like slate or other stone tiles which are heavier.
Bundles of roofing material per square.
Most composition shingles are 3 bundles per square most of the 40yr composition shingles are 4 bundles per square some 5 or more.
Number of squares.
This refers to the roof area that measures approximately 100 square feet.
To accurately calculate the area of your roof you must first determine its slope or pitch.
Outside of the u s a degree angle is typically used.
A roof s pitch is determined by how much it rises vertically for every foot it runs horizontally.
2 feet x 50 feet 100 square feet or 1 roofing square 50 feet x 50 feet 2500 square feet so 2500 100 25 roofing squares.
Thus a moderate 6 in 12 roof pitch means that the roof rises 6 inches vertically for every 12 horizontal inches it runs.
Total square footage from example 2 above.
For instance a 7 12 roof pitch means that the roof rises 7 inches for every 12 horizontal inches.