In chicago the walls are the greatest source of heat loss and so wall insulation is the best upgrade you can choose for spray foam.
How much does roof insulation save.
The most energy efficient roofs also have high emittance which means they re efficient at releasing any solar heat they have absorbed.
Deciding if spray foam is right for you.
This is known as the albedo effect and many studies have documented significant energy savings from simply lightening the color of a roof.
So it becomes impossible to save 30 on your total energy bills with spray foam on the roof decking when only 15 of your heat gain is coming from the attic space.
Reflective roofs can reduce the temperature on the surface of the roof by as much as 30 percent which means that less heat gets into your home source.
Insulating your attic could reduce your total heating costs by as much as 417 for gas or 1 152 for oil.
1 cool your roof cool roofs are lighter in color than traditional black asphalt or dark wood shingles and save energy by reflecting light and heat away rather than absorbing them.
Insulation savings calculator use this insulation savings calculator to measure the financial impact of increasing your insulation performance.
Bge says that increasing insulation thickness from 2 to 3 inches r 5 to 8 to 14 r 30 inches can save you 95 to 145 per year in 2010 for every 1 200 square feet of ceiling area.
Square feet of house or area to be insulated current and desired r value for insulation and type and cost of your energy.
Methodology for estimated energy savings from cost effective air sealing and insulating.
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