Top-Rated Air Sealing
Contractor in Chicago, IL

Stop Air Leaks. Start Saving.

If your home feels drafty, your upstairs is always hotter or colder than the rest of the house, or your energy bills keep climbing — the problem might be air leaks in your attic. At Eco Tec Insulation, we specialize in professional attic air sealing for Chicago homeowners who want a more comfortable, efficient, and healthy home.
By sealing gaps, cracks, and openings in your attic, we help prevent conditioned air from escaping and unconditioned air from entering. That means fewer drafts, more consistent temperatures, and a noticeable drop in your heating and cooling costs.
We also provide window and door foam air sealing for new construction projects, ensuring tight, energy-efficient building envelopes right from the start.

(847) 675-1400
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What Is Air Sealing? - and Why Does It Matter?

Air sealing is the process of closing up small gaps and penetrations in your home’s structure — most commonly found in the attic, where warm air naturally rises and escapes.

Even tiny leaks can add up, causing:

  • Drafts and uneven temperatures
  • Higher heating and cooling bills
  • Dust, pollen, and moisture intrusion
  • Unnecessary strain on your HVAC system

Proper air sealing keeps your home’s conditioned air where it belongs — inside — while keeping unwanted outdoor air, moisture, and pollutants out. The result? A home that’s more comfortable, efficient, and durable year-round.

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We Do It All!

Proper Air Sealing For Every Type Of Property

Commercial Businesses

From restaurants like Mcdonald's to retail stores like Trader Joe’s and everything in between, our air sealing projects can help you cut down the heating and cooling costs for your business or home.

Industrial Spaces

Not only will our insulation services help you save dramatically on energy costs, but they can also help prevent contamination that is caused by dust and allergens.

Trucks & Trailers

Did you think we just did buildings? Well, think again! If you’re transporting goods, our strategic air sealing services can help you cut down on your costs and prevent anything from getting into your supply.

Certified Installers of Industry Leaders

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3M
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gaco
Basf
SES
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Our Air Sealing Process

At Eco Tec Insulation, we use proven techniques and premium materials to find and seal every leak in your attic and other key areas of your home.
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1. Inspection & Leak Detection

We begin with a detailed inspection — sometimes including blower door testing — to identify where air is escaping.

Common leak points include:

  • Attic floors and knee walls
  • Gaps around chimneys and vents
  • Openings around recessed lights and fans
  • Attic hatches and pull-down stairs
  • Plumbing and electrical penetrations

2. Targeted Air Sealing

Once we locate problem areas, we use high-performance spray foam and caulking materials to seal them effectively. Our closed-cell spray foam provides a long-lasting, airtight barrier that resists moisture, pests, and temperature changes.

3. Quality Check & Energy Improvement

After sealing, we verify that your attic is properly sealed and insulated to ensure maximum comfort and energy savings.

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Why Focus on the Attic?

Up to 40% of a home’s energy loss can happen through the attic. Because warm air rises, even small gaps in your attic floor or around penetrations can lead to significant heat loss in winter and heat gain in summer.
By professionally sealing your attic, you’ll:
  • Eliminate hot and cold spots between floors
  • Prevent conditioned air from escaping
  • Reduce strain on your HVAC system
  • Keep dust, pollen, and outdoor pollutants out
  • Create a more consistent, comfortable home environment
How It Works

New Construction Air Sealing

If you’re building a new home, Eco Tec can help you start off right with window and door foam air sealing. Our precise foam applications fill small voids and seams around frames, creating a tighter, more efficient building envelope that helps meet modern energy codes and performance standards.

The Benefits of Professional Air Sealing

  • Lower Energy Bills: Stop wasting money heating and cooling outdoor air.
  • Improved Comfort: Even out room temperatures throughout your home.
  • Better Indoor Air Quality: Keep out dust, allergens, and pollutants.
  • Moisture Protection: Reduce condensation and potential mold growth.
  • Sound Control: Block noise from outside for a quieter home.
  • Long-Term Durability: Protect your home’s structure and insulation from air and moisture damage.
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Why Choose Eco Tec Insulation for Air Sealing?

When it comes to attic air sealing, experience matters. Our trained and certified professionals use industry-leading products and advanced techniques to deliver reliable, long-lasting results.

At Eco Tec Insulation, we’re committed to:

  • Energy Savings You Can Feel: Noticeable comfort and efficiency improvements.
  • Eco-Friendly Materials: Safe, high-performance sealing products.
  • Honest Assessments: We explain what your home needs — and what it doesn’t.
  • Quality Workmanship: Clean, careful installation every time.

Whether you’re improving your existing home or building a new one, Eco Tec Insulation helps make your space more efficient, comfortable, and sustainable.

Frequently Asked Questions

We most commonly use liquid spray foam for air-sealing projects, but can tweak our approach to best suit your property.

Our team is happy to provide an energy assessment and audits to help you lower your heating and cooling bills.

Yes, we are happy to provide you with references for past projects, including residential and commercial clients.

Before starting a project, our team will provide you with an estimate of insulation cost for your home.

Proper insulation reduces heat loss in winter and keeps cool air inside during summer, leading to lower energy bills.

Depending on the type, insulation can last for decades, with some materials, like spray foam, offering a lifetime of durability.

Yes, Eco Tec Insulation provides insulation removal services, ensuring your property is clean and ready for new insulation.

Signs include uneven temperatures, high energy bills, and drafts. A professional assessment can provide a definitive answer.

Insulation reduces energy consumption, lowers carbon footprints, and contributes to a greener environment.

The installation time varies by project size and insulation type but generally takes between a few hours to a couple of days.

Eco Tec Insulation serves various locations across Chicago and nearby areas, providing comprehensive insulation solutions.

Yes, Eco Tec Insulation offers free quotes to help customers understand the costs and benefits of their insulation options.

Contact Us Today

If you’re trying to save money on your energy bill, save the earth, and solve your insulation issues with services that come with a lifetime warranty, fill out the form to the right. You’ve got insulation questions, we’ve got insulation answers, and cannot wait to talk to you soon!