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  • Average homeowner rating star icon4.4
    Average homeowner rating
  • Verified reviews icon136
    Verified insulation services reviews

Top-Rated Insulation pros in Thornton - Updated Nov 2026

Avatar for Attic Pro
Attic Pro
5.0(
44
)
Blown-In Insulation - Install or UpgradeBatt, Rolled or Reflective Insulation - Install or Upgrade

Serving Thornton, IL and surrounding areas

Approved

In business since 2025

Free estimates

Credit card accepted

"Attic Pro Insulation did an outstanding job! They contacted me 10 minutes after I entered my search information.They were professional, on time, and explained everything clearly. Highly recommend them for anyone needing quality insulation work!"
Response time8 hrs
Response rate100%
7 neighbors recently requested a quote
Avatar for Arcos Environmental Services, Inc.
Arcos Environmental Services, Inc.
4.4(
16
)
Blown-In Insulation - Install or UpgradeBatt, Rolled or Reflective Insulation - Install or Upgrade

Serving Thornton, IL and surrounding areas

Approved

In business since 2002

Free estimates

Credit card accepted

For the last 15 years, Arcos Environmental Services, Inc. has been serving as a general contractor for government weatherization programs. As we have continued to grow, we have created the subsidiary Arcos Pro Services to serve as our residential division of insulation installation using the same professional and detailed work. We are committed to giving homeowners a peace of mind in regards to their home's energy efficiency. \n \nArcos is also a Nicor Gas Contractor Circle member meaning finished upgrades to your home may qualify you for up to $1,250 in rebates as well as tax incentives. Check out our website for more information! \n \n

Air Sealing
R49 Blown In Insulation
Before work
pre insulation levels
In the procees to allow attic walkway

+3

Response time1 day
97 neighbors recently requested a quote
Recommended by76%of homeowners
Avatar for Home Genius Exteriors
Home Genius Exteriors
4.7(
265
)
Batt, Rolled or Reflective Insulation - Install or UpgradeBlown-In Insulation - Install or Upgrade

Serving Thornton, IL and surrounding areas

Approved

In business since 2004

Free estimates

Emergency services offered

"I felt very comfortable throughout the whole process from the sales to the install of my roof. The project managers, Walter and devan, were very knowledgeable during the install and made sure we didn’t have any questions. Overall very pleased with everything"
Windows
Windows
Windows
Windows
Windows

+58

Recommended by87%of homeowners
Avatar for Home Genius Exteriors
Home Genius Exteriors
4.7(
272
)
Blown-In Insulation - Install or UpgradeBatt, Rolled or Reflective Insulation - Install or Upgrade

Serving Thornton, IL and surrounding areas

Approved

In business since 2004

Free estimates

Emergency services offered

"I am very pleased with my new windows. I used Home Genius Exteriors to do my roof, gutter protection, and now Windows. This is an absolute amazing company, my salesman brendan was very helpful, Devan the Project Manager helped make sure everything went smoothly. Walter and Mike also from production were very friendly and professional. And Shawn, the window installer was polite,knowlagable, and efficient. And even cleaned up on his way out. Next on the agenda is to get a new door taken care of. Highly recommend HGE"
Asphalt Roofing
Asphalt Roofing
Asphalt Roofing
Asphalt Roofing
Asphalt Roofing

+55

3283 neighbors recently requested a quote
Recommended by85%of homeowners
Avatar for VFJ Eco Insulation, Inc.
VFJ Eco Insulation, Inc.
New to Angi
Blown-In Insulation - Install or UpgradeBatt, Rolled or Reflective Insulation - Install or UpgradeSpray Foam Insulation - Install+1 more

Serving Thornton, IL and surrounding areas

Approved

In business since 2023

Free estimates

Credit card accepted

Victor, the owner, started working labor in early 1990's. He turned his professional expertise in home renovations into his own business, establishing VFJ Eco Insulation, Inc. Providing clients with a wide range of experienced property improvement services. We’re committed to professional, efficient workmanship and accurate, honest proposals. We can’t wait to partner with you for your next project!

Response time2 days
6 neighbors recently requested a quote
Edge Central
New to Angi
Batt, Rolled or Reflective Insulation - Install or UpgradeBlown-In Insulation - Install or Upgrade

Serving Thornton, IL and surrounding areas

Approved

In business since 1972

Free estimates

Credit card accepted

OPC Pest Services has been providing quality pest control to homes and businesses in Louisville, Lexington, Frankfort, Bowling Green, and Southern Indiana since 1972. As the largest pest control company based in Kentucky, our commitment to excellence is our guiding principle.

Pest Control Services
Pest Control Services
Pest Control Services
Pest Control Services
Pest Control Services

+2

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Insulation FAQs, answered by experts

Hanging a thick blanket over your windows will help to keep the heat inside, but only a little. Covering the glass will also prevent the sunlight from getting in, which might actually decrease the efficiency of your window overall. If you get to the point where you’re hanging blankets over your window to keep warm, call in an expert to seal around your windows to prevent warm air from escaping. They may also recommend replacing old windows that aren’t as insulative as newer window technology. Sealing a window isn’t terribly expensive and can make a big difference.

Through R-value assessments based on climate and existing insulation.

The time required for insulation installation can range from a few hours to a few days, with most projects taking 1-3 days to complete. The final duration depends on the project's size and complexity, the area size, and the type of insulation being installed.

Minimal maintenance is required, though regular inspections to ensure insulation hasn't shifted or deteriorated can improve performance over time.

For your safety, you should always wear a mask when cutting batts of fiberglass insulation. We also recommend wearing eye protection, safety gloves, and long sleeves to protect your skin. Properly suiting up helps you avoid several fiberglass issues, such as cuts from the tiny shards of glass and inhaling small bits of fiberglass.

The Thornton, IL homeowners’ guide to insulation services

From average costs to expert advice, get all the answers you need to get your job done.