What services do you offer?

Our offerings include: Residential & commercial insulation (batts, blown-in, foam) Sound-control insulation Mold remediation Energy audits Roof insulation

Where are you located and what areas do you serve?

We’re based in Downers Grove, IL (555 Rogers St, Downers Grove, IL 60515) and serve the entire Chicagoland area, including Addison, Aurora, Bartlett, Bolingbrook, Chicago neighborhoods, and more.

Can you handle both new construction and existing building projects?

Yes, we work on new construction, renovations, and existing home re-insulation, including attics, walls, crawl spaces, and commercial structures.

Do you provide free estimates and energy audits?

Yes! We offer free estimates and energy audits, no trip charge. Our certified team will evaluate your needs and recommend the best solutions.

Are you licensed, insured, and BBB accredited?

We are licensed, bonded, and insured, and hold worker’s compensation coverage. We are also a BBB-accredited business with an A+ rating.

Illinois Insulators - Downers Grove, IL

It's Easy To See Why Your Heating Bills Are So High

Blown In Fiber Glass

Cellulose Insulation

Spray Foam

Bibs: (Blown in Blanket System)

Fiber Glass Batt

Electric and Solar Attic Fans

Blown In Fiber Glass

Cellulose Insulation

Spray Foam

Bibs: (Blown in Blanket System)

Fiber Glass Batt

Electric and Solar Attic Fans

Established in 2006

Located in Downers Grove, IL

- Thomas Hanrahan 12/7/2025

"I really appreciated the job completed by Illinois Insulators. Their communication, plan of action of what needed to be corrected and added along w clean up and price are Top Shelf."