One might then assume that.
Approximate square footage of an attic.
For example if your length is 40 feet and your width is 20 feet then 40 20 800 square feet.
The following tools estimate the area of a roof as well as the amount of materials necessary to construct a roof of a given area.
Measure the length and width of each square and rectangular area of the attic floor and note the dimensions on.
If you re laying the foil down on top of existing attic insulation on the attic floor then you just need to know the square footage of the attic area you re covering.
In the united states a run of 12 inches 1 foot is used and pitch is measured as the rise of the roof over.
As answer 2 states or suggests average is subjective and relative.
Of living space measures 40 by 45 at the exterior.
Federal housing authority recommends a minimum of at least 1 square foot of attic ventilation evenly split between intake and exhaust for every 300 square feet of attic floor space.
Multiple these two measurements to arrive at a square footage number.
Calculate the square footage of your attic.
For example if you attic floor area is 30 x 50 then you re measuring 1 500 sq ft.
You determine this by multiplying the length x width of the space.
Measure the length and width of the attic space using a tape measure.
Multiply step 1 and step 2 together to get the area of the attic floor.
Create a rough sketch of your attic on a piece of paper.
Proper attic ventilation consists of a balance between air intake at your eaves soffits or fascias and air exhaust at or near your roof ridge.
How to calculate the square feet of an attic step 1.
Step 4 measure the height of your attic in feet.