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Does Insulating Over a Garage Save Energy?

Find out if insulating the attic over your garage is a good use of your energy dollars, and if it will save on your utility bills. Watch this video to find out more. ...More

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Does Insulating Over a Garage Save Energy?

Danny Lipford in an uninsulated attic over a garage.

Danny Lipford in an uninsulated attic over a garage.

Insulating the area in the attic over a garage might keep the temperature a little more stable in the garage, but it does little to reduce the amount of energy needed to heat and cool your house, so it’s not a good investment of your energy dollars.

A much better use of your energy saving dollars would be to make sure you have at least 12” to 14” of insulation in the attic over the heated and cooled areas of your house.

Watch this video to find out more.

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2 Comments on “Does Insulating Over a Garage Save Energy?”

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  1. Bob McCormick Says:
    August 13th, 2015 at 10:35 am

    What you’re not addressing is if there is a room above the garage. My two story home has a room above the garage that I use as office space. It gets really in the summer, and I clicked on this todayshomeowner.com video to get information about insulating above my hot garage in hopes it might help keep the heat separated from the office above. I realize it wouldn’t be a small job, since I’d have to first check to see if it’s already insulated by cutting a test hole in the garage ceiling sheet rock; Assuming there is no insulation there, It’d be nice to see a video about my next options. i.e. have insulation blown in?
    Bob McCormick

  2. Official Comment:

    Ben Erickson Says:
    August 13th, 2015 at 11:32 am

    Good point, Bob. If you have a conditioned room over your garage, it would be a good idea to insulate the garage ceiling if it’s easily accessible. But since it’s a floor to the room, insulating it won’t have as much of an effect as the room’s ceiling.

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Danny Lipford: Sarah wants to know, “Will I save energy dollars by adding insulation over my garage?”

Yeah, you would think you would save a lot of money on your energy bill by insulating that space above your garage, but it really doesn’t save you money.

It might keep the temperatures in your garage a little more stable, but you can spend those insulation dollars in your existing attic—the area above your heated and cooled areas—and really drive that energy bill down.

And it only makes sense. If you have sufficient insulation, which in most parts of the country that means 12 to 14 inches, then you’re heating and cooling system is going to work a lot less. And that certainly translates into less money going out to keep the temperature in your home nice and comfortable.

So, even through if you’ve just run out of things completely to do around the house, and you want to insulate the attic above the garage. It might help a little, but it’s not worth the investment.