The length l times the height h of a triangle is twice its area a2.
Satalite way to know how many squares a roof is.
With that as background you are now ready to estimate how many shingles you will purchase for your roof project.
A square simply refers to a 10 x 10 square of roofing.
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To find the squares divide the overall roof area by 100 and then round up.
The result is 240 and this means you would need 240 squares of shingles to cover that roof.
This can make it even safer to do your measuring and it also removes a level of guessing to your calculation.
The answer is the number of roofing squares for the roof.
This is simply 100 square feet of roof.
How to estimate roofing materials.
When figuring the amount of shingles needed to roof a house you first convert the total square footage of the roof to squares a square represents 100 square feet of area covered by shingles.
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The number of squares determines the amount of shingles needed.
There are many great benefits to using google earth to measure your roof but nothing is as good as using diy s satellite roof measurement.
As a rule of thumb there are 3 bundles to a square assuming that you are using three tab strip shingles.
There are also 29 standard sized shingles measuring 12 inches by 36 inches in each one of these.
The first of which is that you don t even have to go up on the roof.
Because each 100 square feet of roof is one roofing square divide the total area from step 1 by 100.
This free roofing calculator estimates the area of a roof and the amount of materials required to replace or build said roof.
So if you divide your answer of a product of length times height by two you will get the area of a triangle.
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Although roofing projects are estimated and sold by the square roofing material is often not sold in 1 square increments.
Singles are often sold in bundles with three bundles equaling one roof square.
1 roof square 100 square feet.
A square is an area of roof which measures 100 square feet.
For instance if the roof is 1550 square feet then it is 16 squares.
The most common type of shingle called a three tab or strip shingle is generally packaged three bundles per square.
To determine the number of squares on the gable roof above simply divide its total of 24 000 square feet by 100.