Roofing material is estimated by the square which is equal to 100 square feet.
Estimate roof square feet.
Since it takes 3 bundles of shingles to cover a square plan to purchase 3 bundles for each square.
Roof pitches in degrees.
As an example if your overhang is 12 inches you ll add 2 feet to the overall length and 2 feet to the overall width of the house.
Low average and high figures for the estimator tool.
In cases where a roof has a complex shape such as in the image to the right measuring the dimensions and areas of each part of the roof to calculate total area will result in a more accurate measurement of area.
Keep in mind that the average size of a roof is 1 700 square feet so your total will likely be 10 higher or lower than this figure.
For estimating purposes we also assume that there is a chimney a couple of dormers and two layers of old shingles that need to be torn off and removed before a new roof.
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.
Your roof is without a doubt one of the most important elements of your home.
The first step in a free roofing estimate is measuring the roof dimensions.
For instance if the roof is 1550 square feet then it is 16 squares.
How to estimate roofing materials.
This is simply 100 square feet of roof.
A square simply refers to a 10 x 10 square of roofing.
You can use the roofing calculator below to get a rough estimate of roofing costs per square foot depending on the type of roofing material.
To find the squares divide the overall roof area by 100 and then round up.
It will display 3 figures.
1square of roofing covers 100 square feet of roof a bundle is 1 3 of a square.
The calculator cannot account for complex shapes based on a measurement of square footage alone.
This gives us a 3d roof area of 1 625 sq ft.
Costs can vary widely depending on how complex your roofing structure is type of roofing material overall slope number.
Assuming this is a hip roof we multiply this by 1 1 which gives us roughly 18 squares or 1 800 square feet of the roof surface.
Because each 100 square feet of roof is one roofing square divide the total area from step 1 by 100.
The answer is the number of roofing squares for the roof.
The average roof is 3 000 square feet or around 30 squares.
To estimate roofing materials start by finding the total square footage of the roof and divide the number by 100 to determine the number of squares in the roof.
You will need to express this size in terms of square feet.