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Do I Need to Insulate My Rim Joist?

If your home has a basement, it has a rim, or band, joist. This is where the basement ceiling framing and home siding meet above the foundation wall. Perhaps you are wondering, “Should I insulate my rim joist?”

The simple answer is an astounding yes. Without proper insulation, the rim joist, like many areas of a home, can be a big source of heat loss. Here is why insulating this area is beneficial, along with the various options available to you.

Benefits of Rim Joist Insulation

If you’re planning to add insulation around your home, make sure the band joist is among the locations you address. There are several benefits of boosting home insulation levels (including the rim joist). It helps:

  • Lower energy bills: One of the most important features of an energy-efficient home is proper insulation. By keeping conditioned air inside where you want it, you end up maintaining a comfortable home more easily and at a lower expense.
  • Improve comfort: If you have ever sat next to a drafty window, you appreciate how uncomfortable outdoor air infiltration can be. A well-insulated rim joist helps keep the basement at a comfortable, steady temperature on par with the rest of the house.
  • Contribute to a healthier environment: Any time you cut back on energy consumption, you certainly save money, but you’re also doing your part for the environment! If a lower carbon footprint is your goal, insulation is a step in the right direction.

Materials

Two materials often used for insulating rim joists include:

  • Spray foam: Professionals agree that this is one of the best rim joist insulation option. It both seals nail holes and insulates the area effectively. Spray foam requires an experienced installer, but the end results are worth the effort.
  • Foam board: Two-inch, foil-faced foam board insulation is another option, and it’s typically used in new construction. Once the board is cut to size and fit in place, spray foam seals gaps around the edges.

Maryland & DC Area Rim Joist Insulation Installers

Serving the Washington, DC metropolitan area, Accurate Insulation is a good company to call when you need to insulate all parts of a new home or need more insulation for your rim joist, basement or crawl space. Our offices are in Upper Marlboro and Hagerstown but we serve the Greater Washington-Baltimore area.

For your initial consultation and estimate, contact us online or call 301-358-6411.

Products We Install
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Fiberglass

Our insulation team adds energy efficiency, comfort & value to homes & buildings.

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Spray Foam

Accurate Insulation is proud to be a leading installer of spray foam insulation.

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Cellulose

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

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Radiant Barrier

We can help keep your home cooler and more comfortable with an attic radiant barrier.

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Garage Doors

When you turn to Accurate Insulation for garage doors, you work with a great team.

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Gutters

No matter your gutter needs, the Accurate Insulation team has you covered.

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