Skip to main content
Guides

What Should I Do About My Crawl Space?

Chris FroelkeOwner & Founder
2 min read

Last updated February 13, 2026

What Should I Do About My Crawl Space?

Crawl spaces are extremely common in the Minneapolis and St. Cloud areas, yet they often go ignored by homeowners who are looking to enhance home performance and energy efficiency. What many people don’t realize, however, is that the majority of “fresh air” that characterizes a home is brought in through tiny cracks, gaps and air leaks in the home envelope. The crawl space is one of the main sources of the issue of airflow in and out of the home and must be addressed in order to improve comfort and indoor air quality.

What is a Crawl Space?

If you’re unsure what a crawl space actually is, you’re not alone. In simple terms, a crawl space can be defined as an area underneath the floor or roof of the home that allows for access to wiring and plumbing. Crawl spaces are typically limited in height, hence their given name. While useful, every crawl space is subject to potential problems that can affect safety and home performance. These areas tend to be rife with insects, mold and other contaminants when left unsealed, which is why homeowners are generally discouraged from entering their crawl space without the help of a professional.

Clearly, your indoor air is at risk. RetroGreen Energy is here to help, and it all starts with sealing your crawl space.

Why Seal Your Crawl Space?

Your crawl space, if not properly maintained and sealed, can affect indoor air quality, it’s important to realize that airflow is causing airborne contaminants to move throughout the home and to enter your conditioned living spaces. According to the National Human Activity Pattern Survey (NHAPS), Americans spend approximately 87% of their time indoors, making it all the more important to focus on improving indoor air quality in the home. High levels of moisture in the crawl space can also cause structural damage to occur, adding to the problem twofold.

At RetroGreen Energy, we believe that air sealing the crawl space of the home is the answer, as doing so will boost efficiency, lower your monthly energy bills and improve your indoor air quality. After all, there’s nothing more important than the health and safety of you and your family, and one of the most effective ways to mitigate risk is to start by focusing on the crawl space.

Ready to Improve Your Home's Energy Efficiency?

Get a free energy audit and discover how much you could save on your utility bills.

Get Your Free Quote

Chris Froelke

Owner & Founder

Chris didn't start RetroGreen Energy because he wanted to be in the insulation business. He started it because he wanted to fix homes the right way.

After earning his BPI Building Analyst certification and Minnesota Building Contractor license, Chris spent years studying how homes perform as systems. He saw firsthand that most comfort and energy problems weren't caused by old windows or outdated furnaces — they were caused by air leakage and inadequate insulation that nobody was diagnosing properly.

In 2009, he launched RetroGreen Energy with a commitment to doing things differently. Every project would start with proper diagnostics. Every recommendation would be based on data, not sales targets. And every homeowner would get the honest truth about what their home actually needed.

Minnesota Licensed Building Contractor #631810BPI Certified Building AnalystTop 5 RetroFoam Dealer Nationwide4,500+ Homes Insulated16+ Years in Home PerformanceLicense #631810

READY TO SAVE?

Ready to Save on Your Energy Bills?

Join hundreds of Minnesota homeowners already enjoying lower utility costs with RetroGreen Energy.