5 Best Spray Foam Insulation Services in Chicago (2026)

Independently ranked by our review of ratings, reviews and reputation · How we chose

By Brad Smith, Home Services Expert · ✓ Data verified August 2026 · 8 min read

A bad spray foam insulation job in Chicago can mean five figures spent on the wrong material without you knowing it, and the contractors here have logged nearly 1,200 Google reviews between them. Nearly all sit at 4.8 or above, but the spread between what those ratings actually cover is wide enough to matter more than the stars.

Short answer: Koala Insulation of Chicago - Western Suburbs is the most-reviewed contractor here at a perfect 5.0 stars across 561 reviews. Innovative Insulation Solutions (4.9, 72 reviews) and Eco Tec Insulation (4.8, 252 reviews) round out the top-rated names, both with over 20 years combined experience in the trade.

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1. Koala Insulation of Ch…
2. Eco Tec Insulation, In…
3. Chicago Green Insulati…
4. Clean Air Doctors
5. Innovative Insulation…
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Chicago's Spray Foam Insulation Contractors, Side by Side

#	Business	Rating	Reviews	Best for
1	Koala Insulation of Chicago - Western Suburbs	5.0 ★	561	Full-home audits and installs	View ›
2	Eco Tec Insulation, Inc. \| Certified Roofing & Insulation Contractors Chicago & Suburbs	4.8 ★	252	Attic and roofing-adjacent work	View ›
3	Chicago Green Insulation, Inc.	4.8 ★	195	Attic, crawl space and closed-cell foam	View ›
4	Clean Air Doctors	4.8 ★	111	Garage and combined air-quality work	View ›
5	Innovative Insulation Solutions	4.9 ★	72	Basement and closed-cell foam	View ›

5 Best Spray Foam Insulation Services in Chicago (2026)

Our top picks, reviewed

#1 Overall🕑 Open 5 days/wk↩ Responds to reviews

Koala Insulation of Chicago - Western Suburbs

5.0561 Google reviews

Koala Insulation of Chicago - Western Suburbs offers a complimentary home efficiency audit before quoting a job, then covers spray foam, blown-in attic insulation, air sealing and crawl space encapsulation. Owner-led site visits are common for larger jobs, and the company also flags available energy rebates before booking.

What people praise

Free home efficiency audit before you commit to anything
Perfect rating maintained across the largest review base on this list
Owner personally assesses larger jobs before work begins
No pressure to add unnecessary extras beyond the scoped work

Worth knowing

As with most residential insulation jobs, tighter or harder-to-access spaces can extend timelines

Reputation scorecardrank in Chicago

Rating5 / 5

Review volume561 · 97th

Confidencevery high

Recency3 months ago

Info completenesssite · phone · hours

Rating breakdown98% 5-star

✓ VerifiedSource: Google

Our take: The safest default given its perfect rating and the largest review base by far, with the free audit removing much of the guesswork before you commit.

Website Book now +1630-315-0966 Directions

67a Eisenhower Ln S, Lombard, IL 60148

#2🕑 Open 7 days↩ Responds to reviews

Eco Tec Insulation, Inc. | Certified Roofing & Insulation Contractors Chicago & Suburbs

4.8252 Google reviews

Eco Tec Insulation combines certified roofing and insulation contracting, useful when a spray foam job also touches roofing details like baffles and venting. The company has served repeat customers over multiple years, coordinating directly with a homeowner's existing roofer when needed to keep the work consistent.

What people praise

Coordinates directly with a homeowner's roofer for jobs that touch both trades
Repeat customers return years later for additional work
Reasonably priced among the three quotes reviewers typically compare
Thorough prep and cleanup described consistently across reviews

Worth knowing

Focused specifically on attic and roofing-adjacent insulation, less on other areas like crawl spaces

Reputation scorecardrank in Chicago

Rating4.8 / 5

Review volume252 · 90th

Confidencehigh

Recency2 weeks ago

Info completenesssite · phone · hours

Rating breakdown95% 5-star

✓ VerifiedSource: Google

Our take: The strongest pick if your project involves both insulation and roofing details in the same space, since it can coordinate rather than requiring two separate contractors.

Website Book now +1847-675-1400 Directions

7100 N Lehigh Ave, Chicago, IL 60646

#3🕑 Open 6 days/wk↩ Responds to reviews

Chicago Green Insulation, Inc.

4.8195 Google reviews

Chicago Green Insulation is a Highland Park-based contractor specializing in spray foam insulation, offering a lifetime warranty on installed foam for residential and commercial properties across the Chicago area. Owner Tom Decker personally handles inspections and quotes, including for issues like recurring frozen pipes, and the company has built a long-standing referral-based client base over multiple years.

What people praise

Owner personally inspects the property and explains options before quoting
Long-tenured customers describe reliable, repeat work across different projects
Free inspection offered even when it doesn't lead to a booked job
Reviewers note visible reduction in heat loss after installation

Worth knowing

One recent detailed review describes a serious dispute over the exact foam product installed and delayed communication resolving it
Another reviewer flags that code-required fire-retardant coating over foam in storage areas wasn't clearly scoped upfront

Reputation scorecardrank in Chicago

Rating4.8 / 5

Review volume195 · 83rd

Confidencemoderate

Recency8 weeks ago

Info completenesssite · phone · hours

Rating breakdown95% 5-star

✓ VerifiedSource: Google

Our take: Longtime customers and the owner's hands-on approach speak well of this contractor, but given a detailed recent complaint about product substitution, confirm the exact foam brand and type in writing before work begins.

Website +1847-987-3626 Directions

1954 1st St Ste 379, Highland Park, IL 60035

#4🕑 Open 6 days/wk↩ Responds to reviews

Clean Air Doctors | Insulation Company | Spray Foam Insulation

4.8111 Google reviews

Clean Air Doctors pairs insulation services, including spray foam for open and closed cell applications, with air duct cleaning and indoor air quality assessments across 16 Chicagoland communities. The company runs a broad service list from whole-house humidifiers to soundproofing insulation, useful for homeowners tackling more than one issue at once.

What people praise

Combines insulation with duct cleaning and air quality work under one company
Reviewers note noticeable temperature improvements in previously uninsulated garages
Responsive scheduling, even on short notice
Broad service area across 16 Chicagoland communities

Worth knowing

Some of the most detailed reviews reference other services like duct cleaning rather than spray foam specifically

Reputation scorecardrank in Chicago

Rating4.8 / 5

Review volume111 · 77th

Confidencemoderate

Recency4 months ago

Info completenesssite · phone · hours

Rating breakdown90% 5-star

✓ VerifiedSource: Google

Our take: Worth calling if you want insulation and air quality addressed together, though ask specifically about their spray foam track record since more reviews reference duct and dryer-vent work.

Website +1773-669-6139 Directions

5318 N Clark St, Chicago, IL 60640

#5🕑 Open 5 days/wk↩ Responds to reviews

Innovative Insulation Solutions

4.972 Google reviews

Innovative Insulation Solutions specializes in spray foam, including closed-cell applications for basements and open attic spaces, alongside soundproofing and lawn mower repair services. Owner Richard Spies is frequently on-site personally to check in during larger jobs, and the company competes directly on price against multiple quotes.

What people praise

Owner personally visits job sites to verify quality during larger projects
Reviewers consistently rank pricing as the most competitive among multiple quotes obtained
Clear communication on timing and process before work starts
General contractors partner with them repeatedly across their own client projects

Worth knowing

Smaller review base than the top two names on this list, though consistently high-rated

Reputation scorecardrank in Chicago

Rating4.9 / 5

Review volume72 · 63rd

Confidenceearly

Recency3 months ago

Info completenesssite · phone · hours

Rating breakdown97% 5-star

✓ VerifiedSource: Google

Our take: A strong choice for basement and closed-cell foam work specifically, backed by consistently competitive pricing against other quotes.

Website +1847-454-9081 Directions

300 Scott St, Elk Grove Village, IL 60007

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How we score

Every number on this page is computed from public Google data on the date shown, not from opinion or payment. Rating is the business’s live Google star average. Review volume is how many customers have rated them, ranked against other Chicago spray foam insulation contractors. Confidence weighs the rating by that volume, so a 5.0 from hundreds of people carries more weight than a 4.9 from a dozen. Recency reflects how recently customers are still leaving reviews. No business can pay to change these numbers.

How much does spray foam insulation cost in Chicago? (2026)

Spray foam insulation pricing in Chicago varies significantly by square footage, whether it’s open-cell or closed-cell foam, and access difficulty, so most contractors quote after an on-site or virtual assessment rather than a flat rate.

Serving all of Chicagoland

These contractors cover Chicago and the surrounding suburbs, including Lombard, Highland Park, Elk Grove Village and the North Side. Searching for spray foam insulation near me? Each listing below shows a live phone number and address so you can request a quote.

What to ask before you hire a spray foam insulation contractor

Will you confirm the exact product brand and type in writing before starting?
Is a fire-retardant coating required for this space by code, and is it included in the quote?
Do you offer a free home efficiency audit before quoting?
What warranty do you offer on the installed foam?
Can you provide references from jobs completed over a year ago?

Frequently asked questions

How did you choose these contractors?

We started from every spray foam insulation contractor in Chicago with a public Google presence, then ranked by rating, review volume, consistency, and recency. See How we score above.

Are these rankings paid?

No. Rankings come from the public Google data in the scorecard. A business can pay to be a Featured Partner, which adds a badge and top placement, but that never changes another business’s score or position on the underlying data.

How often is this updated?

The data carries a verified date (August 2026 on this page). We refresh listings periodically so ratings and review counts stay current.

Should I get the exact insulation product confirmed in writing?

Yes. Get the exact product name and type specified in your contract before work begins, and don’t rely on a verbal description of the material alone.

Is a fire-retardant coating required over spray foam in storage spaces?

In many cases, yes, particularly in areas used for storage. Ask your contractor whether this applies to your project and confirm it’s included in the quoted price, not an unexpected add-on.

The bottom line

Koala Insulation is the safe default given its perfect rating and free efficiency audit. Whichever contractor you choose, get the exact product and any code-required coatings specified in writing before work starts.

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