Just wondering if you base the homes square footage by sqft under roof or sqft under air when quoting a price.
Total square footage under roof.
For me length x width x height total.
Convert the area to roofing squares.
The answer is the number of roofing squares for the roof.
Covered enclosed porches can only be included if they are heated using the same system as the rest of the house.
Multiply the square footage of your roof by 1 to get the 10 percent waste allowance.
Finished attic square footage is included if an area has at least seven minimum feet of clearance.
If your roof is flat or has no more than a 3 in 12 pitch you can calculate its total square footage by simply multiplying the length by the width.
The total amount of roofing material you need is 17 300 1 730 19 030 square feet.
The calculator cannot account for complex shapes based on a measurement of square footage alone.
This area includes garages porches patios and any area under the main roof.
If the ceiling is angled it must be 7 feet or higher for at least half of the room s floor area.
How are total total living used.
Steep roofs measure your house at ground level then add in the roof s overhang for greater accuracy.
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.
This sometimes will include detached structures like detached garages guest suites or cabanas.
Stairways and closet areas are included in the square footage length.
Edited due to typo.
Because each 100 square feet of roof is one roofing square divide the total area from step 1 by 100.
I am looking at american property and i found this house it said it had 5000sq ft under air and 11000sq ft under roof what does that mean.
We are basing our prices on square footage under air but are thinking about charging based on the under roof square footage.
The total foot print the home will take up.
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.
You use the total living square feet when you are considering what it will be like to live.