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4.8/5
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Ryan Doyle
2 weeks ago
5 stars icon
Absolutely AMAZING!!!!! This company stands by its work,they insisted that I check everything and to make sure the house was in perfect shape before the guys left ..the workers were FANTASTIC,they wore booties and protective gear …everything that you’d expect was perfectly done ..totally exceeded my high level of expectations.This is the way work should be done ,I can’t say enough about these guys HIGHLY RECOMMEND TO ANYONE …Hats off to Green Attic for your high standards…And not to forget about Patrick,he took on this challenge with total confidence,thank you ,thank you so much
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Howard Gartzman
a month ago
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I have used Green attic several times. They are quick, clean, thorough, reliable and cost was middle of the pack compared to other quotes. These people, including Walter, Romulo and all the people in the office have been professional, courteous and flexible as well as reliable and expedient.
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L Clark
2 months ago
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Romuno and his team came on time and were very cordial and friendly. They discovered an issue with some electrical work while working on the insulation, which I was surprised and happy about, and were able to rectify the situation easily and at a great value, considering the timing of the project, etc. Romuno made it clear he want to ensure my satisfaction throughout the process.  When finished, the job site was cleaned very well.I highly recommend this company and all its team members and hope to do more projects in the future with them!
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Daniela Ferrantelli
6 months ago
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Highly recommend Green Attic. Scheduled to have  my attic re-insulated and Romulo and his crew did a fabulous job. The attic was in pretty bad shape prior to the work getting done and green attic made it look so good. The crew worked efficiently and got the job done in 2 days. I also asked Romulo to install a couple other things on my roof outside of the scheduled project and he very kindly and willingly did so without hesitation. Very pleased with how everything turned out. Thank you so much for a job well done! Before and after pics below.
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Emily Gerhardt
5 months ago
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These guys did a great job! Great price, quality service, and they offer several payment options and plans. I thought we bought a lemon of a house and the insulation and sealing job they did fixed all of our issues and were so thrilled! Highly recommend these guys. Plus they are local so it’s great supporting a chicago based company.
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Mel Petersen
a week ago
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Great service, highly recommend! We needed our attic inspected and insulated because it was sealed off when we moved in. The team gave a pretty accurate quote though they weren’t able to get into the attic to see everything. For the work, they were on-time, efficient, communicative, and did a great job cleaning up after, can hardly tell they were here. I will definitely call them again if we decide to do more insulation work.
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John Andrew Krol
5 months ago
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We have a somewhat unusual split level home that was built in 1968 that has three separate attic spaces. There was very little insulation left and many penetrations into the house. The upper level was unbearable in the summer and we imagined it would be very cold in the winter. We chose Green Attic because we felt they were more meticulous than other companies, providing the most detailed quote and explaining all aspects of air sealing and use of cellulose insulation. For anyone looking to insulate, please note that air sealing is just as important - you will not get much benefit from insulation if conditioned air from your home can be exchanged with your attic! Unfortunately, after the job started, they did find mold, but the extra cost to remediate was certainly worth it. After the job was completed, we were not surprised the temperature of the house improved, but what we were surprised at was the significant improvement in indoor air quality. Just see the attached before and after as an example of how bad our attic was vs. how good it now is.
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John C.
a year ago
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Exellent work - showed photos of completed job, thoroughly cleaned up when finished - heartily recommend them
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Doris M.
a year ago
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We had Green Attic out to give us a quote for garage and attic space. Their Team 5 (Alex, Omar and Herbert) came out and worked for 2 days, non-stop. Alex discovered an area of mold in the attic that had not been seen before the quote. He took photos of every step of the remediation and showed them to us. He discussed needs for remediation and completed it right away. He spoke to us before each step and asked for approval. His team, Omar and Herbert worked as hard and long as any team we’ve ever had for past home improvements. Everything was taken care of by the end of day two. The team made sure that everything was spotless and clean before they left. I’d like to commend Alex, Omar and Herbert for their strong work ethic and genuine politeness. They were trained in a way that calls for excellence. I had a lot of contact with Tim, who came out for the original quote and he never tired of explaining procedures to us. We are so happy with the entire team of Green Attic professionals.Description of Work: Blown in attic and garage ceiling insulation
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Jackie S.
a month ago
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They are great. Came in, have is a reasonable price. When they came, we didn't need what we hoped them for. They even found what our problem was, after 4 yrs fighting with our condo association and 9 HVAC guys. I will use them again, no doubt
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Michael L.
11 months ago
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This company is really amazing and I highly recommend them! From the initial sales experience with Patrick (no nonsense, honest, detailed and great communication) to the workers including Julio who took a lot of pride in his work. It's so refreshing to deal with a reputable company that has high standards and ensures quality service. I'm glad I went with them!! Amazing work!
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Adam D.
a week ago
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The team that installed the insulation was great. Really conscientious and kept the place clean and finished the drywall well. I wouldn't hesitate to call them for any future work!
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Nancy Okimoto
2 months ago
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Green Attic did a great job. The installers were professional and left everything clean and neat when they finished .  Walter and Jaime worked on the second day and did a great job. Edgar and Rigoberto did a fine job the first day .
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Iqra Makda
2 months ago
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Edgar and his team came and did some work at our house. It was perfect, clean, and organized. They were very efficient and thorough. Explained the process before and after and took care of making sure none of the chemicals used impacted my kids toys. I would recommend this company to all
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Anne Marie Katsoolias
a week ago
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Romulo and his partner did a great job with my garage installation. They showed up on time, got to work, completed the job and cleaned up after themselves. I would recommend this company for your attic installation.

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Christina Tremmel
a week ago
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Great price. Installers did an excellent job. They worked steady and wore a protective uniform. Cleaned up after the project was finished. I would work with them again. Wood recommend this company.
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Alicja Svean
7 months ago
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Green Attic did a great job fixing all our attic issues (ventilation/insulation/mold) in our new house! Everyone we dealt with was friendly and professional from start to finish. Frank did a great job coming out and doing the estimate and Marian was very helpful at the office with scheduling/paperwork! The crew that came out to do the job was fantastic! Jaime, Jose Luis & Armando were very professional, showed me pictures as work was getting completed, answered all my questions and cleaned up everything when they were done. I would highly recommend Green Attic!
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Joel P.
5 months ago
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Requested attic sealing and insulation. They sealed, increased ventilation and blew in a blanket of insulation to R60. The value was very good and the install was also very good. I would not hesitate to use them again for other projects.
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Becky V.
a year ago
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Green Attic was great to work with. It was easy to schedule a free estimate/inspection. Patrick came out and identified issues and gave recommendations. It was easy to coordinate a date to have the work done.

I appreciated the communication they gave before coming, including names of the workers. Alvaro, Romulo and Wilfrido were great. They were very respectful of my home and cleaned up all the work areas before leaving both days. Throughout the process they explained what they were doing and would often call me over so that I could see what they had done.

It was convenient to get the Nicor rebate through them and the follow up inspection they did really showed the difference the insulation and weather sealing makes.

Overall, it was a great experience. Even though it's only been 3 months since having the work done, I have already noticed a decrease in my gas bill when compared to last year and I definitely hear my furnace turn on a lot less.
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Jim S.
a year ago
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The guys did a great job. On time, professional, and willing to adapt when circumstances changed. We discovered an electrical issue in the attic, so the team waited a few weeks to finish the job after I had those issues addressed.
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Rich Holt
7 months ago
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Romelo and his crew came to our house early, worked very efficiently.  They covered our electronics, furniture, and table/counter surfaces with plastic to avoid getting dust everywhere.  They vacuumed and mopped other surfaces to ensure our place was clean.  Very professional and courteous!
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Chris S.
4 months ago
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Amazing team very polite and professional
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corey mueller
4 months ago
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Had our attic insulation beefed up with new blown in cellulose. Was a major improvement immediatly after it was installed. Cut our heating needs by 3x to maintain temperature in the house.Team working on my house was friendly and professional. Team leads Romulo and Omar did a great job making sure everything was done right and everything was cleaned up after.
laura-avatar
Laura Nesbitt
4 months ago
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Romulo & Alvaro did a great job installing everything. Cindy, Frank and the Green Attic team were extremely attentive. I love how easy they made the process, everything is online even the rebates.

BONUS: I originally reached out to them to check for mold free of charge.
kurt-avatar
Kurt Ziegel
3 months ago
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Romulo and his team did a fast, efficient, and professional job for us! They took care to protect everything in the garage from the work and cleaned everything when they were done.
Closed-cell spray foam under the roof between wood trusses in a commercial warehouse

Commercial Spray Foam Insulation in Chicago and Suburbs

Green Attic provides high-performance spray foam insulation across Chicagoland, cutting energy costs and enhancing comfort in commercial and industrial spaces.
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Trusted by homeowners for reliable, energy-saving insulation solutions.
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Why Choose Spray Foam for Your Commercial Property

Spray foam insulation delivers a tight, energy-efficient seal that lowers operating costs and supports healthier indoor environments.

It’s ideal for commercial spaces that need consistent temperatures, lower utility bills, and long-lasting protection.

Request a free consultation to see how spray foam can improve your building’s performance.
Get a Free Quote
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Benefits of Commercial Spray Foam Insulation

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Lower Energy Costs
Seals air leaks and provides superior insulation, reducing heating and cooling expenses year-round.
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Consistent Indoor Comfort
Eliminates drafts and hot/cold spots, creating a stable environment for employees, customers, and tenants.
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Noise Reduction
Creates an airtight barrier that prevents moisture intrusion, lowering the risk of mold growth and building damage.

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Moisture & Mold Control
Reduces emissions by replacing fossil-fuel systems, especially when powered by renewable electricity.
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Longer Building Lifespan
Strengthens walls, roofs, and structures by adding rigidity, protecting your investment for the long term.
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Improved Indoor Air Quality
Reduces entry of dust, pollen, and pollutants, promoting a healthier workspace.

Choosing the Right Spray Foam for Your Commercial Building

Both open-cell and closed-cell spray foam deliver excellent insulation, but each is suited to different needs. Understanding the differences helps you choose the best option for your building’s performance and budget.

Open Cell Spray Foam
  • Cost-effective for interior walls and ceilings
  • Expands to seal gaps and irregular cavities
  • Strong sound absorption with drying potential
  • Lightweight and easy to trim around MEPs
Open vs closed cell sprat foam insulation visual
Closed Cell Spray Foam
  • High R-value per inch with air and vapor control
  • Adds rigidity to walls and roof decks
  • Durable and moisture resistant for tough environments
  • Helps control condensation on metal skins

Commercial and Industrial
Properties We Serve

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Office Buildings

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Commercial Plazas

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Medical / Hospitals

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Manufacturing Facilities

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Multi-Family Units

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Metal Buildings

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Warehouses

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Institutional / Schools

Types of Spray Foam Insulation

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Open-Cell Spray Foam for Commercial Buildings

Open-cell spray foam is lightweight and flexible, expanding significantly to fill cavities and provide excellent sound absorption.

Its open-bubble structure allows limited air and moisture movement, making it best for interior use in conditioned spaces.

Lightweight & Expansive:
Fills gaps and cavities effectively.

Sound Absorption:
Reduces noise transfer between offices and interior spaces.

Cost-Efficient:
More affordable for large interior areas.

Best For:
Interior walls, ceilings, and partitions in offices, retail, schools, and other conditioned spaces.
Closed-cell spray foam applied under the roof between wood trusses in a commercial building

Closed Cell Spray Foam

Closed-cell spray foam is dense and rigid, creating a strong, moisture-resistant barrier with a higher R-value per inch.

It also reinforces the structure, making it ideal for exterior applications and demanding environments.️

High Insulation Value: Offers superior R-value per inch for energy efficiency.️

Moisture & Vapor Barrier:Protects walls, roofs, and other exposed areas.

Adds Structural Strength:
Reinforces walls and roofs in large buildings.️

Best For: Exterior walls, flat or sloped roofs, warehouses, industrial spaces, and cold storage facilities.

Our Proven Process

Step 1: Assessment

We evaluate your building’s structure, insulation needs, and energy performance. Our team identifies air leaks, moisture concerns, and areas where spray foam will deliver the greatest impact.

Step 2: Planning

You’ll receive a tailored insulation plan that considers your building’s size, use, and budget. We select the right spray foam type, open-cell or closed-cell, to ensure optimal efficiency and durability.

Step 3: Installation

Our certified team applies spray foam with precision and efficiency, minimizing disruption to your operations and ensuring lasting performance.

Step 4: Results

Enjoy measurable improvements: lower energy costs, enhanced comfort, better indoor air quality, and long-term protection for your commercial property.
Get a Free Consultation

Service Areas

Northwest Suburbs

North Shore

Learn More

Your Trusted Partner for Commercial Spray Foam Insulation

As leading commercial spray foam insulation contractors in Chicagoland, Green Attic delivers energy-efficient solutions that lower costs and boost building performance for offices, retail spaces, warehouses, industrial facilities, schools, and more.
Get a Free Consultation

Green Attic Insulation Customer Reviews

L Clark - Google Review Avatar
8 days ago
5-stars-review
Romuno and his team came on time and were very cordial and friendly. They discovered 
an issue with some electrical work while working on the insulation, which I was surprised and happy about, and were able to rectify the situation easily and at a great value, considering the timing of the project, etc. Romuno made it clear he want to ensure my satisfaction throughout the process.  When finished, the job site was cleaned very well.
I highly recommend this company and all its team members and hope to do more projects in the future with them!
Read moreHide
Google-Avatar-Avik D
8 days ago
5-stars-review
Romulo and his teammate were so fast and clean at insulating and repairing our damaged
ceiling due to a roof leak. Again it was easy to engage green Attic as a return customer because I felt well treated with their work when they first insulated and managed.to transform our cold home. Great job!
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Google-Avatar-David M
22 days ago
5-stars-review
Fantastic work. No nonsense, clean job site, speedy and good communication.
an issue with some electrical work while working on the insulation, which I was surprised and happy about, and were able to rectify the situation easily and at a great value, considering the timing of the project, etc. Romuno made it clear he want to ensure my satisfaction throughout the process.  When finished, the job site was cleaned very well.
I highly recommend this company and all its team members and hope to do more projects in the future with them!
Hide
Google-Avatar-John Z
22 days ago
5-stars-review
Green attic insulated two levels of my house. Julio and his team did an excellent job and I have very
satisfied with the work they did. Thank you Green attic!
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Google-Avatar-W
28 days ago
5-stars-review
Romulo and his crew did an excellent job installing new insulation.  Great job with prep and 
cleanup to minimize the dust.
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Google-Avatar-T
1 month ago
5-stars-review
Edgar and crew from Green Attic were awesome. They thoroughly explained everything 
they did. Prompt courteous clean professional and hard working. I would give them more stars if I could.
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Google-Avatar-Victor P
1 month ago
5-stars-review
Romulo and his crew came by to fix a solar panel for my attic fan that had been knocked over
by a tree branch. They replaced the damaged parts and had it fixed within 30 minutes. Very professional and credit to them for doing it in super cold weather.
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Google-Avatar-Corey M
1 month ago
5-stars-review
Had our attic insulation beefed up with new blown in cellulose. Was a major improvement
immediatly after it was installed. Cut our heating needs by 3x to maintain temperature in the house.Team working on my house was friendly and professional. Team leads Romulo and Omar did a great job making sure everything was done right and everything was cleaned up after.
Read moreHide
Google-Avatar-Y
1 month ago
5-stars-review
From initial inspection and quote to payment processing, I am very content
with Green Attic. Patrick, Romulo & crew, and AP Dept. are all professional, pleasant, and amicable. I would highly recommend Green Attic. I am very satisfied with the insulation work.
Read moreHide
Google-Avatar-Laura N
2 months ago
5-stars-review
Romulo & Alvaro did a great job installing everything. Cindy, Frank and the Green Attic team
were extremely attentive. I love how easy they made the process, everything is online even the rebates.

BONUS: I originally reached out to them to check for mold free of charge.
Read moreHide
Google-Avatar-E
2 months ago
5-stars-review
These guys did a great job! Great price, quality service, and they offer several payment
options and plans. I thought we bought a lemon of a house and the insulation and sealing job they did fixed all of our issues and were so thrilled! Highly recommend these guys. Plus they are local so it’s great supporting a chicago based company.
Read moreHide
Google-Avatar-Daniela F
3 months ago
5-stars-review
Highly recommend Green Attic. Scheduled to have  my attic re-insulated and Romulo
and his crew did a fabulous job. The attic was in pretty bad shape prior to the work getting done and green attic made it look so good. The crew worked efficiently and got the job done in 2 days. I also asked Romulo to install a couple other things on my roof outside of the scheduled project and he very kindly and willingly did so without hesitation. Very pleased with how everything turned out. Thank you so much for a job well done! Before and after pics below.
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