Chicago Green Insulation

Business Details

24 Years

experience

Your Trusted Spray Foam Insulation Experts in Chicago

Since 2002, Chicago Green Insulation has been the leading authority on spray foam insulation in the Greater Chicagoland Area. Our team, led by founder Tom Decker, combines over two decades of industry expertise with a commitment to energy efficiency and community impact. We specialize in delivering high-performance insulation solutions that enhance comfort, reduce energy costs, and meet rigorous building codes. As a licensed provider of premium open and closed-cell foams and PolyMac equipment, we prioritize compliance, quality, and customer satisfaction.

Our work extends beyond insulationwe partner with local organizations to promote affordable housing, workforce development, and environmental sustainability. Recognized for excellence by the Lake County Coalition to End Recidivism and the Highland Park Chamber of Commerce, we blend technical expertise with a mission-driven approach. Every project reflects our dedication to innovation, integrity, and measurable results for residential and commercial clients across Chicagoland.

Services

Spray Foam Insulation Attic Renovation Garage Ceiling Insulation Basement Buildout Crawl Space Insulation Cathedral Ceiling Insulation Addition Insulation Energy Audits Tax Credit Assistance Community Projects

Details

Year established: 2002

Highlights and features

We have over 20 years of experience in spray foam insulation.
We use premium PolyMac equipment for precise, durable installations.
We prioritize community impact through partnerships with local nonprofits.
We offer expert compliance guidance with local building codes.
We provide transparent, no-compromise solutions for residential and commercial projects.

Associations and certifications

Spray Polyurethane Foam Alliance
Insulation Contractors Association of America

What people say

Expert installations Energy savings Community commitment Long-term value Professional team

Website

Update Listing

Services

Spray Foam Insulation

Spray foam insulation creates an airtight thermal barrier, reducing energy costs by up to 50% while improving indoor air quality. Ideal for residential and commercial structures, it enhances structural integrity and meets modern energy codes. Our installations use premium materials for long-term durability and efficiency.

Attic Renovation

We transform attics into energy-efficient spaces by sealing air leaks and applying high-R-value foam. This reduces HVAC loads, prevents ice dams, and creates usable storage or living areas. Projects typically save homeowners 3050% on heating and cooling costs.

Crawl Space Insulation

Our crawl space solutions eliminate moisture intrusion, cold floors, and pest entry. By sealing and insulating these areas, we improve indoor comfort and prevent structural damage. Most projects cost $3,000$6,000 with immediate energy savings.

Garage Ceiling Insulation

Insulating garage ceilings reduces heat loss and creates quieter, more comfortable living spaces above. Two-car garage projects range from $5,000$10,000, depending on ceiling height and accessibility.

Basement Buildout

We install moisture-resistant foam in unfinished basements, creating energy-efficient living or storage areas. Costs range $4,000$8,000, depending on framing requirements and existing conditions.

People

Tom Decker

Owner

Tom Decker founded Chicago Green Insulation in 2002 after a career in youth services. A licensed PolyMac equipment expert, he champions energy efficiency and social impact through partnerships with Habitat for Humanity and workforce development programs.

Questions

What are the benefits of spray foam insulation?

Spray foam reduces energy costs by 30–50%, improves indoor air quality, and strengthens structural integrity while meeting modern building codes.

How much does spray foam insulation cost in Chicago?

Projects range from $3,000–$20,000 depending on scope. Attic renovations cost $7,000–$18,000; garage ceilings $5,000–$10,000.

Does Chicago Green Insulation offer tax credit assistance?

Yes, we help clients maximize savings through the Inflation Reduction Act, offering 30% tax credits for qualifying insulation projects.

Can I install spray foam myself?

DIY foam kits lack professional results and warranties. Our experts ensure proper application, safety, and code compliance.

What areas do you service?

We serve Chicago, North Shore, Northwest Suburbs, and Western Suburbs including Highland Park, Lake Forest, and Evanston.

How does spray foam improve home comfort?

Foam creates an airtight seal, eliminating drafts and temperature fluctuations while reducing noise from outside elements.

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Reviews (4)

Write a Review

David Ferguson

Sep 02, 2021 Report

Tom Decker was quickly responsive and highly professional in providing advice on an insulation problem that our Condo board is reviewing, but not proceeding with at this time. His willingness to provide technical information and guidance knowing that the job would not be let was appreciated. I would highly recommend he and his firm to all residential customers.

Jason Senner

Aug 30, 2021 Report

These guys are beyond honest, capable, and run a clean job site, and the product is top of the line. I have done 4 foam insulation projects over several remodels, 2 with Chicago Green, and I am about to do 2 more: a gut rehab of classic Chicago frame house for my mother, and our dream penthouse in Lincoln Park. You can't shoot straighter than Tom, and he gives a chance to those less fortunate to prove themselves in their work at Chicago Green. Cannot recommend higher.

Luis Beltran

Aug 26, 2021 Report

Roughly two weeks before I was scheduled for an estimate I booked an appointment for an estimate on Chicago green insulations website, I was prompted with a response that I would get a call back within a few hours, days and almost two week went by before I got a call back from Tom, I received a call back the day of the estimate, hours after it was to be preformed, I was asked what work I needed to be preformed which I informed Tom about and was asked for the total area, which I replied with I wasnt aware of the total sq ft, but it was less then 1000 sq ft, automatically he came out with a

Jerry Kujawa

Aug 21, 2021 Report

Positive:Responsiveness
I am working on a small research project on energy efficiency and I had a theoretical question about spray foam. Knowing that I wasn't in immediate need of service, Tom still took the time to answer my questions. Tom is someone who seems genuinely interested in improving the energy efficiency of Chicago's buildings.