Home Improvement Expert Danny Lipford

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Considerations When Installing Spray Foam Attic Insulation

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What are the advantages and things to consider when sealing the attic of a house with spray foam insulation? -Mike

The biggest advantage to applying spray foam insulation to the rafters in your attic is that you’ll be creating a more energy efficient envelope around your home, which means you’ll be spending a lot less energy and dollars on heating and cooling.

However, you’ll need to take into consideration:

  • Cost: Spray foam insulation isn’t a DIY project and it’s a very expensive upgrade. Unless you plan on being in your home for many years, adding more fiberglass or cellulose insulation may be more cost effective.
  • Existing Insulation: Any insulation between the ceiling and the attic will need to be removed when installing spray foam insulation on the rafters.
  • Attic Ventilation: Any gable, soffit, louver, or power vents in the attic will need to be removed or sealed shut, since the entire attic area will be turned into conditioned space.
  • Windows: A well-insulated and sealed attic will have only minimal effect if you still have leaky, single-pane windows.

Good luck with your project,

Danny

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2 Comments on “Considerations When Installing Spray Foam Attic Insulation”

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  1. Edward Seupersad Says:
    September 2nd, 2012 at 5:28 pm

    What causes moisture in the fibreglass and poly in the basement . How to remedy it .Thanks edward.

  2. Dorothy Says:
    January 23rd, 2014 at 11:17 am

    I live in Jackson, MS and I want to know where can I purchase the spray foam insulation and how cost effective is it for an older home.

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