Owne
Basement & Crawl Space Insulation in Chicagoland
Stop Cold Floors, High Humidity, and Wasted Energy for Good
Cold hardwood floors in winter, musty smells drifting upstairs, and heating bills that never seem to go down almost always share the same hidden culprit: an uninsulated or improperly insulated basement or crawl space. In northern Illinois and southern Wisconsin homes, heat loss through the foundation and rim-joist area can steal 20–30% of your total energy bill while making your first floor feel like an ice rink and turning your furnace into a full-time job.
At The Attic Genius we’ve insulated countless basements and crawl spaces across the entire region for over 25 years. With 400+ combined five-star reviews across our companies, homeowners and builders trust us to deliver warm floors, dry air, and real savings that show up on the very next utility statement.
Call 847.200.8888 for your Free Basement/Crawl Space Inspection & Quote
Why Basement & Crawl Space Insulation Is a Game-Changer
– Warm, comfortable floors all winter long — no more cold feet or slippers required
– Heating bills drop 15–25% almost overnight
– Summer humidity and that stubborn “basement smell” disappear for good
– Radon, soil gases, and outdoor pollen entry are dramatically reduced
– Mold and mildew growth is starved of the moisture it needs
– Pipes, ductwork, and water heaters stay protected from freezing
– Finished basements finally feel cozy without cranking portable heaters
– Home resale value and energy-audit scores go up immediately
Whether you have a full poured-concrete basement, an old Michigan basement, a tight dirt crawl space, or a combination, correct insulation and air sealing is the fastest, highest-ROI upgrade most homes are missing.
Areas We Insulate
– Rim joists / band joists (the single biggest cold spot in 90% of homes)
– Basement foundation walls (interior or exterior)
– Crawl space walls and exposed dirt floor
– Exposed basement ceilings (when finished living space is above)
– Cantilevered floors, bay windows, and bonus-room overhangs
Materials We Trust & Install Daily
– Blown-in cellulose – fills every gap, excellent soundproofing, eco-friendly
– Rolled fiberglass batts with integrated vapor retarder – perfect for open stud walls
– Rigid foam board (XPS or polyiso) – highest R-value per inch and 100% moisture-resistant, code-approved for ground contact
Our Proven 7-Step Process
Free On-Site Assessment
Moisture & Mold Resolution First
Whole-Home Protection
Air Sealing Every Leak
Professional Insulation Installation
Crawl Space Vapor Barrier & Finishing (when needed)
Final Walk-Through & Warranty
Signs You Need Insulation Right Now
– Ice-cold floors above the basement or crawl space
– Musty odors on the first floor
– Condensation on windows or cold walls
– Pipes freezing or sweating
– High summer humidity upstairs
– Visible frost or mold on rim joists in winter
– Uneven temperatures between floors no matter how high you turn the heat
Proudly Serving the Entire Chicagoland Region & Southern Wisconsin
Arlington Heights • Mount Prospect • Palatine • Schaumburg • Hoffman Estates • Barrington • Buffalo Grove • Long Grove • Lake Zurich • Vernon Hills • Libertyville • Crystal Lake • Elgin • St. Charles • Geneva • Naperville • Wheaton • Glen Ellyn • Downers Grove • Des Plaines • Park Ridge • and all the way up to Lake Geneva, WI — and beyond.
Stop Wasting Energy — Start Saving Today
Get Your Free Air Sealing Inspection & Detailed Quote
Same-day and next-day appointments available*