Spray Foam Insulation in New Lenox, IL

Find top-rated spray foam contractors and save up to 35% on energy bills

Compare 7 verified spray foam insulation contractors serving New Lenox, Illinois, backed by 1,378 customer reviews averaging 4.9★. Whether you're insulating a new build, retrofitting an existing home, or upgrading attic and crawl-space insulation, these pre-screened New Lenox contractors handle both open-cell and closed-cell spray foam. Homeowners here typically cut energy bills by around 35% — get free quotes and read verified reviews below.

💰 Spray Foam Savings Calculator for New Lenox

Homes in New Lenox typically cut energy use by 30%–40% with spray foam. Change the numbers below to fit your home.

Foam type
$1,596
Estimated annual savings
At about 35% off your energy bill
$5,100–$8,200
Rough install cost
Attic roofline, about 5.5" of open cell
3–5 years
Estimated payback
Install cost ÷ annual savings

These are estimates, not quotes. Actual savings vary based on home size, current insulation, energy rates, and climate conditions. Savings estimates are based on Department of Energy data for the Cold climate zone. Cost assumes the attic roofline (about 1.15× your home's square footage) at typical installed prices of $0.40–$0.65 per board foot for open cell and $1.00–$1.50 for closed cell; a two-story home has less roof and usually costs less. Get quotes from the contractors below for real prices.

Verified Contractors in New Lenox

5⭐
1 Google reviews

Recent Reviews:

Coaster Crazy!★★★★★3 years ago

LP Insulation of Naperville is the best! I cannot say enough good things about them. We had gotten an estimate from another company and it was more than double. Everyone that has interacted with me throughout this process has been very professional, polite, responsive. We went with the cellulose insulation which made such a difference immediately after they finished, Thanks Guys

Direct: (815) 685-2388

5⭐
12 Google reviews

Recent Reviews:

Christopher Vandiver★★★★★4 years ago

Hired Jim and his crew to insulate a home renovation I was working on. They were super professional and very flexible regarding time. As with any project the scope expands and causes delays, but they worked with me. They kept in good contact. Showed up promptly, they were clean, fast, and I couldn’t be happier with the results. I’ll be hiring them for any spray foam project I have in the future.

Ryan Deutmeyer★★★★★5 years ago

Jim was very prompt and upfront on pricing and scheduling and the price was reasonable. He did a good job of explaining the benefits of the spray foam and his communication was perfect! They did a great job and both with the spraying and clean up. If I need more in the future I would definitely use Air Defense again!

Raymond Francis Youell★★★★★4 years ago

Jim and his crew are great. They are very knowledgeable and completely honest good hearted people. Jim will tell you exactly what he thinks should be done and not try to up sell anything. Very well thought out planning and plenty of technical experience. He knows everything there is to know about spray foam and the right way to do the job. He uses a high quality closed cell product that offers strength, acts as a vapor barrier, and most importantly gives a higher R-value. He really helped me with my project and if spray foam isn’t right for your job he will tell it to you with an honest alternative. I would highly recommend them.

4.9⭐
674 Google reviews

Recent Reviews:

Denise Cooper★★★★★2 weeks ago

Box sills were insulated in October. My home had a mouse problem for the past couple of years and paid a Pest Service (all they did was put bait boxes outside). Found information to insulate your box sills where the small leaks are allowing cold air and pests to come in. Wish I knew about this solution before. Now, absolutely no evidence of mice, spiders, webs, small bugs..... All perfectly and expertly sealed. Basement is warmer and less damp and wood floors above are warmer. ARC Company was excellent. They were easy to talk to and the crew was helpful and knowledgeable. Everything was sealed off and debris expertly removed . Old insulation had some mold AND dead mice.... UGH!!!! Everything was cleaned up and installed perfectly. Crew was professional, courteous and outstanding.... Wasted too much money on Pest Service and should have insulated with ARC . Highly recommend services and crew. Money well spent for great services and results.

Adrienne Groff★★★★★a week ago

Great communication from start to finish on my project!! David (initial consultation and sales) was very easy to work with, very patient, very knowledgeable. The crew (Victor and Pedro) were professional and friendly. I appreciated how hard they worked, their attention to detail, and how clean they kept everything. The insulation looks so good — what a difference!! We will definitely hire ARC again!!

James Parr★★★★★3 weeks ago

I had a great experience with Arc Insulation. David came out to give the initial quote and was incredibly patient as I gathered and compared other estimates. He walked through each one with me in detail and was honest about what was better or not in those quotes so I could feel confident I was getting the best value. His knowledge and transparency made the decision easy. Mauricio and Antonio completed the installation and were fantastic to work with. They explained the work step-by-step, thoroughly covered and protected the areas being insulated, took detailed photos throughout the process, and cleaned up completely when finished. They were professional, respectful, and patient in answering all my questions. Overall, I really enjoyed working with the Arc Insulation team and will absolutely reach out to them first for any future insulation needs. Highly recommend.

4.9⭐
46 Google reviews

Recent Reviews:

David Martinez★★★★★2 months ago

James was honest from the very start. I needed insulation for the top of my house. I had a few people come out and he was upfront about what I needed to seal my house up. Spray foam on one side and blew in insulation on the other side. I even asked if I should do the spray foam on both sides and he said it wasn’t necessary. Hard to find honest people that stand behind their work these days. Highly recommend!

Eric Niewinski★★★★★a year ago

My experience with James at Titanium insulation has been fantastic from start to finish. We were on a tight schedule because our tenant moved out and after doing the demo ourselves we found the existing insulation in our upstairs attic bedrooms was inadequate and needed to be torn out. James came out and knew how to maximize the insulation and r value in a challenging spot in these homes where there is very little room to work with and provided a solution. We opted for a conditioned attic space in our cape cod home, and spray foam in our rafters to maximize the R value. I have walked through around a dozen of these types of homes and I can say we have the best insulated Cape Cod in our neighborhood, it is extremely comfortable. James went above and beyond to make sure our project went on schedule, and even exceeded expectations by offering referrals to additional contractors for drywall, which we ended up using and getting a solid finish we are happy with. James was very quick to respond to texts and calls, and gave me updates about the project each step of the way. This work did cost us thousands so we wanted to make sure money was well spent and we believe it was. Highly recommend James and his team for insulation work, they all go above and beyond and we will enjoy this for years to come.

Karen Hoppe★★★★★2 weeks ago

James was very prompt to come and provide a reasonable quote for adding insulation to my entire attic. They actually did the work the very next day! I have been very pleased that my roof has remained snow covered, proving to me that heat is no longer being transferred from my living space into the attic. James was very personable and patient answering all my questions.

4.9⭐
349 Google reviews

Recent Reviews:

Erik Bianchi★★★★★a week ago

Had my attic insulated, some air sealing done, and an HVAC tune-up by the Ruiz brothers at Assured, and everything turned out awesome. The team was super friendly, showed up on time, and explained what they were doing in a way that really made sense. Norman installed a new bath fan as well, and he did a great job with it. The old one wouldn't even turn on, and after the install, he made sure everything was running perfectly before he left. The house feels way more comfortable now, and the HVAC is running smoother than it has in years. They were quick, clean, and really easy to work with. Definitely recommend them if you need insulation or HVAC work. Great crew and solid results!

Mary Keleher★★★★★a week ago

Assured installed insulation in my attic. From the salesman to the installers, we were very happy their customer service. I received a text and a phone call before they arrived. Kept us up to date on arrival time. Walked us through the insulation process, etc. The lead installer was very nice, engaging and informative. They covered the entry to the bedroom with plastic before starting work. Very clean when they were finished. Great job. Thank you for excellent service.

Sunny C★★★★★2 weeks ago

Assured is absolutely the way to go. I had the pleasure of working with two extremely professional and sharp-looking gentlemen — Jelani (the assessor) and Hunter (the sales manager). From the moment they arrived, their professionalism stood out. They were respectful, well-spoken, and carried themselves in a way that immediately built trust. Beyond that, they were genuinely kind, personable, and even brought some humor to the appointment, which made the entire experience comfortable and enjoyable. What I appreciated most was their honesty — they only quoted me for what I actually needed, not what they could try to upsell. Hunter demonstrated a tremendous amount of knowledge and communicated everything in a clear, confident, and professional way. He knows how to sell without ever making you feel pressured or uncomfortable. Jelani was equally impressive, extremely respectful of my home, and handled the ladder and equipment with real care to ensure nothing was scratched or damaged. Their pricing is more than fair, and I truly feel Assured has my best interest in mind. I’m looking forward to having them complete the work, and for anyone shopping around, I highly recommend Assured Energy Solutions. Outstanding service from two top-tier professionals.

4.8⭐
47 Google reviews

Recent Reviews:

Sharon P★★★★★a month ago

I can’t speak highly enough of South Chicago Insulation ( Gasca Brothers) the entire experience from the moment Joe Gasca walked in was fantastic !! Joe was friendly and knowledgeable, he took the time to explain and actually point out a few things we weren’t aware of, that was needed. (the other company failed to tell us) Joe also addressed all my questions that I was concerned with- I felt very confident in my decision having them continue with the work. We will be using South Chicago Insulation again ( roof and spray foam in another location ) I would HIGHLY recommend this company ! Thank you South Chicago Insulation our home will be nice and warm this the winter and months in the future ( definitely will help on gas bill ) Thank you again on a job well done 👍🏼 Erik and Sharon Peterson

Dan Daly★★★★★a month ago

The crew did a fantastic job. Work included cleaning out a mess of old insulation and spray foaming the attic roof. Lots of tight places that they took care of. Attic temp feels much more stable now. Looking forward to a cozy winter thanks to the new spray foam insulation.

James Bansley★★★★★8 months ago

South Chicago Insulation did an absolutely amazing job with our renovation. They are incredibly knowledgeable, thorough, and expeditious... but their attention to detail is what really takes the cake. I was sure that we were going to have an issue with freezing pipes as we were running the plumbing for two overhead rainshower heads for our upstairs shower through the attic crawlspace. Problem for others, maybe... but not South Chicago Insulation! They ran a vapor barrier over top of the ceiling joists above the pipes and secured it tightly. Then they were able to insulate with spray foam behind the piping using the vapor barrier as a backer, and left the underside exposed. Over top of the vapor barrier on the attic side they replaced the blown in insulation to code level and bingo... airtight seal with pipes as cozy as a baby sheep snuggled up in a huddle. Trust me folks... you can sleep easy when South Chicago Insulation is taking care of your home or business... it's so much easier to rest when you don't feel like your paying to heat and cool the whole nieghborhood. They got every nook and cranny covered. Absolutely amazing job. Thank you guys for the great work.

Recent Reviews:

Marysia Walker★★★★★a week ago

Echo Tec is responsive, professional and efficient. They did a wonderful job with my home insulation.

Nicola Genelly★★★★★a month ago

It was a pleasure to work with Brian, Andrew, and their family business. I recently had Eco Tec at my home doing wall cavity insulation. My house is over 100 years old and largely stucco exterior, both of which present more challenges, but they were able to do get the job done mostly from the outside. I only had a short turn around time for completion of the work, repair, and clean up. Brian went above and beyond to get my final clean up done by my required deadline - thank you Andrew and Ryan. I want to acknowledge Ruben for his efforts and thorough work getting my drywall repaired, painted and back to normal. Brian is very responsive and has such a friendly, calm and competent attitude. I thought my initial quote was very reasonable considering the scope of the work. My final invoice and payment due amount was really good value. I would definitely recommend Eco Tec Insulation.

shlomo bar-sheshet★★★★★2 weeks ago

Working with Brian from Eco Tech was truly a pleasure. He was very accommodating and explained the scope of the work . Eco Tech installed insulation under our 3 season room and They have done a fantastic job and now we can enjoy our sun room even in cold weather. Thank you Eco Tech for a job well done . I will definitely recommend them to anyone .

Frequently Asked Questions — Spray Foam Insulation in New Lenox

These are the questions New Lenox homeowners ask most about spray foam cost, R-value, and open- vs. closed-cell foam — with context for local pricing and roughly 35% typical energy savings. Compare the 7 verified New Lenox contractors above for exact quotes.

How much can spray foam insulation save on heating and cooling bills in New Lenox?▼
Homeowners in mixed climates like New Lenox, IL typically see 20–30% reductions in total energy costs after spray foam installation. The savings come from both reduced heating in winter and reduced cooling in summer. The exact savings depend on your home's current insulation, size, and local energy rates, but most homeowners recoup the investment within 3–6 years.
Is spray foam better than fiberglass insulation for homes in New Lenox?▼
For most homes in New Lenox, IL, spray foam outperforms fiberglass significantly. Fiberglass batts insulate but do not air seal — meaning conditioned air still escapes through gaps. Spray foam both insulates and creates an airtight seal, addressing the root cause of energy loss. While spray foam costs more upfront, the performance difference in mixed climates makes it the better long-term investment for most homeowners.
Is spray foam insulation worth the cost?▼
For most homeowners, yes. Spray foam creates an air-tight seal that traditional insulation cannot match, reducing energy bills by 15–35% annually. It also adds structural rigidity, acts as a moisture and vapor barrier, reduces outside noise, and can increase home resale value. The higher upfront cost compared to fiberglass is typically recovered within 3–7 years. One important note: because spray foam creates a very tight building envelope, proper mechanical ventilation is important to maintain healthy indoor air quality and prevent interior moisture buildup. This is typically handled by an Energy Recovery Ventilator (ERV) — a system that brings fresh outside air in while pushing stale air out, recovering the energy from the outgoing air so you don't waste what you paid to heat or cool — or a Heat Recovery Ventilator (HRV), which works similarly but is optimized for cold climates. A qualified contractor will assess whether your home needs ventilation upgrades as part of the installation.
How much does spray foam insulation cost in New Lenox, IL?▼
In New Lenox, IL and the surrounding area, spray foam insulation typically costs $1.00–$3.00 per square foot installed, depending on the type and your home's specifics. Open-cell foam runs $0.44–$0.65 per board foot, while closed-cell foam costs $1.00–$2.00 per board foot. A typical 2,000 sq ft home attic in New Lenox costs $2,000–$6,000. Most New Lenox homeowners recoup this investment within 3–7 years through energy savings of 15–35% annually.
What is the difference between open-cell and closed-cell spray foam?▼
Open-cell spray foam is softer, less dense, and less expensive. It expands significantly and is ideal for interior walls, attics, and soundproofing. Closed-cell spray foam is denser, stronger, and provides a moisture barrier — making it better for exterior applications, crawl spaces, and areas prone to flooding or humidity. Closed-cell also has a higher R-value per inch (R-6 to R-7 vs R-3.5 to R-4 for open-cell). One key difference: open-cell foam allows some vapor movement, while closed-cell acts as a vapor barrier — an important consideration for your home's ventilation needs.
How long does spray foam insulation last?▼
Spray foam insulation is one of the most durable insulation options available, with a lifespan of 80+ years when properly installed. Unlike fiberglass batting which can sag and settle over time, spray foam maintains its shape and insulating properties indefinitely. It will typically outlast the building it is installed in.
How do I find a qualified spray foam insulation contractor in New Lenox, IL?▼
When searching for a spray foam contractor in New Lenox, IL, look for ones who are licensed, insured, and have verifiable reviews. Spray foam requires specialized equipment and training — improper installation can cause off-gassing, adhesion failure, or fire hazards. Ask for references, verify their insurance, and get at least 2–3 quotes. A qualified New Lenox contractor will also assess your home's ventilation needs — a tightly sealed spray foam installation requires adequate mechanical ventilation to prevent moisture and indoor air quality issues. FoamMatch pre-screens all listed contractors in New Lenox for licensing and insurance so you can compare verified professionals in your area.
How long does spray foam installation take?▼
Most residential spray foam jobs take 1–2 days depending on the size of the area. A standard attic takes 4–8 hours. After spraying, the foam cures within 24 hours, though most contractors recommend waiting 24–72 hours before occupying the space due to off-gassing during the curing process.
Does spray foam insulation need to be replaced?▼
No — spray foam insulation does not need to be replaced under normal circumstances. Unlike fiberglass insulation which degrades over time, spray foam maintains its R-value and air sealing properties for the life of the building. The only reasons to remove or replace spray foam are water damage, renovation work, or improper original installation.