If your floors feel cold in the winter, your crawl space is likely the reason.
Uninsulated or poorly sealed crawl spaces allow cold air, moisture, and outside temperatures to move directly into your home. In Chicago’s climate, that leads to cold floors, higher energy bills, and year-round comfort issues.
Perma-Seal provides professional crawl space insulation services in Chicago, using proven materials and building-science–backed methods to seal and insulate crawl spaces the right way.
Crawl spaces are often overlooked—but they play a major role in how your home performs.
When crawl spaces aren’t properly insulated and sealed, homeowners commonly experience:
Proper crawl space insulation and sealing creates a protective barrier between your home and the outdoor environment.
Perma-Seal Insulation uses a combination of materials and techniques to deliver long-lasting crawl space performance. Every crawl space is different, which is why we customize each solution.
Rim joists are one of the biggest sources of air leakage in crawl spaces. We insulate and seal rim joists using spray foam insulation to eliminate drafts, block moisture intrusion, and improve comfort on the floors above.
Spray foam insulation expands to fill gaps, cracks, and seams—creating both an air seal and thermal barrier. It’s ideal for crawl spaces where traditional insulation falls short.
Rigid insulation panels are used along crawl space walls and foundation surfaces to provide consistent insulation coverage. These panels resist moisture, improve energy efficiency, and help stabilize temperatures inside the home.
Insulation works best when air movement is controlled. Our crawl space sealing process addresses gaps, penetrations, and joints to prevent outside air from entering and conditioned air from escaping.
Cold floors are one of the most common complaints from Chicago homeowners with crawl spaces.
By insulating rim joists, sealing air leaks, and installing proper insulation materials, crawl space insulation:
Many homeowners notice a difference in comfort almost immediately after insulation is installed.
Not sure if your crawl space is the source of the problem? These are common warning signs:
Cold floors during winter months
Drafts near baseboards
High energy bills
Moisture or condensation in the crawl space
Exposed rim joists or foundation walls
Homes built before modern energy standards are especially likely to benefit from crawl space insulation upgrades.
Crawl space insulation works best when it’s part of a complete home energy strategy. When combined with attic insulation and basement sealing, it helps create a continuous thermal envelope.
The result:
Crawl space insulation requires more than just adding material—it requires understanding how air, moisture, and temperature interact.
Perma-Seal delivers:
We don’t believe in temporary fixes. Our goal is to create a sealed, insulated crawl space that supports your home for years to come.
Perma-Seal Insulation proudly provides crawl space insulation services throughout Chicago and nearby suburbs. Our team understands local construction styles and climate challenges unique to the region.
If your home has cold floors, drafts, or rising energy costs, your crawl space may be the missing piece.
Request a free crawl space insulation evaluation today
Connect with our insulation experts and explore how we can help you improve home comfort and save on energy bills. Contact us to schedule a free insulation inspection for your home today.