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Can You Over-Insulate a House?

It’s common knowledge that you need insulation for a comfortable, energy-efficient home. Proper home insulation helps prevent heat loss or heat gain, which are forms of energy loss/waste. Have you ever wondered, however, if you can go overboard with insulation in your Minneapolis-area home? It turns out that it IS possible to over-insulate a house.

Pitfalls of Excess Home Insulation: You Can Have Too Much of a Good Thing

If your home is over-insulated, it may be too tightly sealed, resulting in low airflow. Airflow problems could also be caused by poor insulation installation – for example, if insulation material is placed over your attic eave ventilation. In these situations, moisture can build up indoors. You might notice the dampness and heat most in the attic, as heat naturally rises.

Too much moisture and humidity can cause mold problems within the layers of insulation. Mold is unhealthy and can be harmful to your home’s structure, especially if it’s in a hidden area and goes unnoticed for a long period of time. Over-insulation could also reduce your indoor air quality and interfere with your home comfort. Humidity can make your home feel “close” and uncomfortable. With stale indoor air and poor ventilation, odors may linger in the air.

Benefits of Proper Home Insulation

With the right amount of home insulation, you’ll soon notice:

  • Lower heating and cooling bills in your energy-efficient home.
  • Increased home comfort.
  • Less wear and tear on your air conditioner and furnace.
  • Lower noise levels in your home.
  • Higher indoor air quality.

How Can You Prevent Over-insulating a House?

Have an expert install your insulation to ensure you get the right amount, and the best insulation type, for your needs. Professional insulation installers won’t make errors like insulating over your attic ventilation. At Metro Home Insulation, we can help diagnose your insulation problem. We work with all types of insulation, including fiberglass, cellulose and spray foam insulation.

Expert Home Insulation in Minneapolis and St. Paul

At Metro Home Insulation, we have 30 years’ experience serving the local area. We’re focused on delivering quality work, on time and on budget. We have experience insulating for the local climate, using the right insulation material to suit your home’s needs. If necessary, our installers will remove old insulation and replace it, rather than adding more on top of the old material. We can also check to see that your insulation is balanced with proper ventilation.

Unsure about your insulation? Contact Metro Home Insulation in Minneapolis for expert insulation installation. Call us at (763) 400-8616 today.

Products We Install

We install blown and batt fiberglass in homes and buildings.


Environmentally friendly and effective, cellulose works well in homes and buildings.

Spray Foam

Our team installs energy-efficient spray foam insulation to keep homes and buildings more comfortable.


Help prevent mold and moisture infiltration in homes you build with our waterproofing services.

Insulation Removal

Metro Home Insulation provides home insulation removal services.

Air Sealing

We include air sealing in our insulation projects to help maximize your energy efficiency.

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