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Spray Foam Insulation in New Lenox, IL

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

Compare verified spray foam insulation contractors serving New Lenox, Illinois. Whether you're insulating a new build, retrofitting an existing home, or upgrading attic and crawl space insulation, our pre-screened New Lenox contractors specialize in both open-cell and closed-cell spray foam. Get free quotes and read verified reviews from New Lenox homeowners.

💰 Estimated Energy Savings in New Lenox

35%
Average Energy Savings
Typical range: 30% - 40%
$1,596
Estimated Annual Savings
Based on $380/month average energy cost
4 years
Average Payback Period
Return on investment timeline

Note: Actual savings vary based on home size, current insulation, energy rates, and climate conditions. These estimates are based on Department of Energy data for Cold.

Verified Contractors in New Lenox

South Chicago Insulation, LLC

📞 Call Now🌐 Visit Website

Direct: (779) 803-8025

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.

Frequently Asked Questions — Spray Foam Insulation in New Lenox

Below are common questions New Lenox, IL homeowners ask about spray foam insulation cost, types, and installation. For local pricing and to compare verified contractors in New Lenox, browse the listings above.

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.

Spray Foam Contractors Near New Lenox, IL

Not finding the right fit in New Lenox? Many spray foam contractors travel to nearby towns. These communities within about 60 miles all have verified contractors listed.

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