You will need to express this size in terms of square feet.
Estimate roof square feet.
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.
Many homes have an asphalt shingle roof but some have wood metal tile and slate which can be more expensive.
Estimate the pitch of the roof.
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.
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.
Since it takes 3 bundles of shingles to cover a square plan to purchase 3 bundles for each square.
The answer is the number of roofing squares for the roof.
Roof pitches in degrees.
This gives us a 3d roof area of 1 625 sq ft.
The average roof is 3 000 square feet or around 30 squares.
The calculator cannot account for complex shapes based on a measurement of square footage alone.
To find the squares divide the overall roof area by 100 and then round up.
1square of roofing covers 100 square feet of roof a bundle is 1 3 of a square.
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.
Because each 100 square feet of roof is one roofing square divide the total area from step 1 by 100.
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.
It will display 3 figures.
This is simply 100 square feet of roof.
For instance if the roof is 1550 square feet then it is 16 squares.
The first step in a free roofing estimate is measuring the roof dimensions.
Roofing material is estimated by the square which is equal to 100 square feet.
A square simply refers to a 10 x 10 square of roofing.
How to estimate roofing materials.
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.
Costs can vary widely depending on how complex your roofing structure is type of roofing material overall slope number.
Low average and high figures for the estimator tool.
This nominal square footage amount is then multiplied by a factor associated with the roof s pitch.