Crawl Space Insulation FAQs

Crawl space awaiting insulation

Valley Insulation, one of Cincinnati’s top insulation companies, specializes in NuWool Insulation for your home. Our company has been in business since 1977, and our team understands how to install residential and commercial insulation.

Today, we answer several FAQs about crawl space insulation for your home.

What is the most effective crawl space insulation?

Rigid foam insulation boards are the most effective because we can install it along the walls of the foundation rather than in between floor joists. However, to strengthen your insulation we can install blown-in cellulose insulation by fastening boards along the joists to contain the insulation.

What kind of insulation should I use in my crawl space?

Rigid foam boards are one possibility, but so is blow-in cellulose insulation using boards applied to the joists of your floors.

Can you install cellulose insulation in a crawl space? 

Yes. High-quality cellulose insulation can fill the cavities in between the joists of your floors with anywhere from 3 to 6 inches of blow-in insulation, depending on how thick your joists are. We make this happen by installing plywood boards at the bottom of each cavity. Then, we blow in the cellulose insulation before sealing it with a vapor barrier for maximum effectiveness.

Is insulating a crawl space worth it?

Yes, in several ways.

  1. Reduces heat or cooling loss. Crawl space insulation reduces the flow of air into and out of your building. Up to 50% of the air in your crawl space can transfer to your home. Insulation can help prevent this.
  2. Keeps floors at a moderate temperature. Have you ever walked barefoot on your floors and noticed it’s hotter or colder compared to the rest of the room? Crawl space insulation can help eliminate this start temperature change.
  3. Reduces condensation in your crawl space. Condensation in your crawl space might produce excess moisture. Moisture draws mold, mildew, and pests. These items can lead to rot in your building’s structure, which may turn into much more expensive fixes and repairs.
  4. Improves air quality. Insulation under your bottom floor helps improve your air quality by forming a barrier between your floor and crawl space. 
  5. Lowers your heating and cooling bills. Perhaps the most tangible benefit of crawl space insulation is that it can lower your heating and cooling costs. Your individual results will vary.

How do you insulate a crawl space with a dirt floor?

The installation process depends on if your crawl space is ventilated or not. Ventilation helps prevent condensation from forming. If it is not ventilated, we may install a vapor barrier that helps reduce or prevent condensation.

We can apply rigid foam boards to the walls of your crawl space in addition to putting cellulose insulation against the floor in between joists.

Who installs crawl space insulation in Greater Cincinnati?

Valley Insulation serves Greater Cincinnati with quality insulation installation, something we’ve been doing since 1977. 

Our friendly staff will come to your home, give you a free estimate, and provide you with excellent customer service from start to finish for your crawl space insulation project. We promise to answer your questions every step of the way.

Contact us online or call 513-353-4100 for more information.

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