Chicago Green Insulation
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Chicago Green Insulation
Since 2002, Tom Decker is the driving force behind Chicago Green Insulation and the #1 authority on the ins and outs on spray foam insulation in the Greater Chicagoland Area. We service the Metropolitan Chicago Area, Chicago, the North Shore and Northwest Suburbs of Chicago. You can view our complete spray foam service area map here.

Customer service is always the top priority at Chicago Green Insulation. Don't take our word for it, read real reviews from satisfied customers from the top review sites. Not sure if spray foam is right for you? Contact Tom Decker, and he'll inspect your property and provide you with his honest assessment on what spray foam can do for you.

In need of a qualified spray foam installer, you have come to the right place! For more than 11 years, Chicago Green Insulation is a leading installer of spray foam insulation in the Chicagoland area. We are a licensed provider of premium open & closed cell foams and a premier user of PolyMac spray foam equipment.
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With ten years of experience selling spray foam insulation in Chicago, Tom Decker is THE person to call and the Chicago Green Insulation is the organization to hire when you are looking for top notch quality and performance as well as someone who can deal with the needs of code officials, home owners and general contractors.
Serving the City of Chicago, the North Shore, North Suburbs, Northwest Suburbs and Western Suburbs including but not limited to; Arlington Heights, Bannockburn, Buffalo Grove, Chicago, Deerfield, Des Plaines, Evanston, Glencoe, Glenview, Grayslake, Highland Park, Highwood, Kenilworth, Lake Bluff, Lake Forest, Libertyville, Lincolnshire, Lincolnwood, Morton Grove, Mount Prospect, Mundelein, Niles, Northbrook, Northfield, Palatine, Park Ridge, Prospect Heights, Riverwoods, Skokie, Vernon Hills, Wheeling, Wilmette and Winnetka.
Spray Foam insulation typically costs 2 to 3 times more than traditional Fiberglass Insulation. Open Cell Foam ranges from $1.50 to $5.00 per square foot, while Closed Cell Foam Insulation ranges anywhere from $2.30 - $7.20 per square foot. Prices vary based upon the depth of the foam being applied.
Reviews (10)
Steve Huisel
Steve Huisel
Dec 14, 2021
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Thank you Tom for all of your help. I had an issue with insulation, and was exploring spray foam for my attic. Instead of selling me on a huge project, Tom provided me with a much cheaper alternative that will do exactly what I need. Thanks Tom for looking out for the customer and helping me save a ton of money. I appreciate your honesty, and if/when I have another insulation project in the future, i will def be using Chicago Green Insulation.
Rod Dayrit
Rod Dayrit
Dec 05, 2021
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Tom took his time during the holidays to give me a recommendation on what I should do with my insulation issue. He gave me options and I decided to go with his recommendation that did not need his services.
Tom was prompt and courteous. If I ever need any insulation services in the future, I will definitely be giving Tom a call again.
David Ferguson
David Ferguson
Sep 02, 2021
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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
Jason Senner
Aug 30, 2021
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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
Luis Beltran
Aug 26, 2021
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Roughly two weeks before I was scheduled for an estimate I booked an appointment for an estimate on Chicago green insulation’s 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 wasn’t aware of the total sq ft, but it was less then 1000 sq ft, automatically he came out with a
Gina E.
Gina E.
Aug 22, 2021
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I reached out to Tom to talk about spray foam insulation for a potential residential project of mine. He is extremely knowledgeable about what he does. I have been in the construction industry for over 17 years and always appreciate a person who knows their craft, is honest about their recommendation and doesn’t just try to get the job for the sake of taking a job. Tom helps you decide what is best for your current project needs. Give him a call!
Jerry Kujawa
Jerry Kujawa
Aug 21, 2021
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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.
Carl Kettler
Carl Kettler
Nov 21, 2020
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Positive: Professionalism, Quality, Responsiveness, Value
I've used Chicago Green twice. Did a great job in my crawl space. Called back a couple years later when doing a remodel. Spray foam is a great product for sealing up the house thermally. Professional crew was very experienced and did a great job.
Dave Gargano
Dave Gargano
Oct 25, 2020
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I am a house flipper that has done more than 60 homes in the Chicago land area. Tom and his team at Chicago Green insulation have been an integral part of what we do. His and his team’s knowledge and understanding of needing to turn a profit but also understanding that the homes need to be done right has been such an asset to us. I have gone through plenty of contractors in my years, but Tom and his team just stand out as people whose honesty and professionalism are above the crowd. He doesn’t try to push products of services that we don’t need. He understands our business but also the residential
Jeff Doherty
Jeff Doherty
Sep 14, 2018
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I hired Chicago Green Insulation to insulate a crawl space under the floor of my sun room. Tom was on time for the estimate appointment, clearly explained the process, and addressed any questions I had at the time. I followed up via email with a few additional questions, and they were answered within hours, on a Sunday no less. They provided adequate protection to avoid any over spray, which was a concern of mine. The job was completed as promised and to my satisfaction. On a side note, Tom really cares about the community and human capital, and is actions back up his words.