The answer is the number of roofing squares for the roof.
Roof square footage vs home square footage.
Take that to a 12 12 pitch and the actual roof square footage goes up to assuming peaked along the 100 dimension 3896 sf.
Roofing quote footage is not the same as home square footage.
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.
Roof size calculations the hard way.
Multiply the square footage of your roof by 1 to get the 10 percent waste allowance.
The roof square footage is what we roofing contractor need to calculate a budget quote to do the job.
So continuing our example if you ve got a two story house with a total square footage of 2 700 square feet with each floor having.
The total amount of roofing material you need is 17 300 1 730 19 030 square feet.
Total square feet is just that.
This area includes garages porches patios and any area under the main roof.
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A discrepancy in the square footage can indicate that an addition was made without the appropriate permits being pulled.
It depends on the home designer and the specific home plan.
The total foot print the home will take up.
The calculator cannot account for complex shapes based on a measurement of square footage alone.
For further clarification of property square footage or anything real estate related do not hesitate to contact me directly.
Because each 100 square feet of roof is one roofing square divide the total area from step 1 by 100.
Same with the garage or basement space that is not finished.
Even some spaces over a garage are not considered living area.
Multiply by the square footage of a single floor of your house.
Take your ground floor square footage and multiply by 125.
To conclude the example if your total roofing area is 17 300 square feet your waste allowance would be 17 300 x 1 1 730 square feet.
Depending on where the information is coming from is going to determine the basis on which the estimated roof footage is calculated.
Roof square footage is not the same as the house square footage unless your roof is flat.
The typical factor is 25 more roof than house square footage.