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Saving Energy: Insulating Your Home

Getting Started – Measuring Existing Insulation

Before you head to the home store or call a contractor, you’ll need to measure the amount of existing insulation. To find out, you'll need a flashlight, a ruler, a screwdriver and maybe a ladder.

The first stop is the attic. Measure the depth of the insulation on your attic floor.

To check sidewall insulation, remove the cover plate from an electrical outlet or light switch on an exterior wall [be sure to shut off power at the service panel first], and use the flashlight to check for insulation behind the metal box.

If you can't see behind the box, remove a baseboard in a hidden area, such as a closet - you might see insulation poking out the bottom.

Go to your basement and check the rim joist - the long, thick board that sits on top of the concrete foundation. You might see insulation in the pockets between each floor joist.

If you have a finished basement, remove an outlet cover to check for foundation insulation - here it may be thick foam sheets instead of fiberglass.

Measuring attic insulation

Don’t miss:

Tips for
Do-It-Yourselfers


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Are you an Alliant Energy customer?

If you’re an Alliant Energy heating customer in Iowa or Minnesota, you can earn cash back when you upgrade your attic insulation.

Looking for an energy-smart insulation contractor or retailer? Try Alliant Energy’s online Dealer Locator to find experts in your area.

 

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Brochures and fact sheets:

PowerHouse: Insulating Your Home
By Alliant Energy [PDF format]

Attic Insulation Fact Sheet
By the U.S. Department of Energy [PDF format]

 

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Learn more:

Insulation
Fact sheet from the U.S. Department of Energy

Simply Insulate
Advice from the North American Insulation Manufacturers Association

Insulation FAQs
Expert answers from the National Insulation Association

 
 
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