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  • Average homeowner rating star icon4.7
    Average homeowner rating
  • Verified reviews icon388
    Verified insulation services reviews

Find Insulation pros in Downers Grove

Avatar for Weather Shield Insulators
Weather Shield Insulators
5.0(
27
)
Blown-In Insulation - Install or UpgradeBatt, Rolled or Reflective Insulation - Install or UpgradeInjection Insulation - Install+2 more

Serving Downers Grove, IL and surrounding areas

Approved

In business since 2008

Free estimates

Warranties offered

"We badly needed insulation in our attic. We got three quotes. Weather Shield was not only the most reasonable, but the only company in which the owner both gave us the quote and installed the insulation with colleague. We could not have asked for more professionalism or better service. Would highly recommend Gus."
Additional Photos
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+14

Response time11 hrs
2 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Attic Air
Attic Air
4.9(
257
)
Blown-In Insulation - Install or UpgradeBatt, Rolled or Reflective Insulation - Install or UpgradeInjection Insulation - Install+2 more

Serving Downers Grove, IL and surrounding areas

Approved

In business since 1996

Free estimates

Warranties offered

"It went really well. Robert Carroll really knows his stuff. Hire this guy. I say that without reservation of any kind. Don't look any further, believe me, I did. This is the smartest guy. He is honest, dependable, offers fair pricing, and his team can do all the work. I got several estimates from A+ rated insulation companies, but Robert was more knowledgeable than the other companies. He was the only one to point out that my soffits were not vented. Apparently, my house was built on the day no one was inspecting. The builder never cut open the soffits. That meant there was zero airflow going through my attic. The attic fan could run all day, but without air to move, it would not do any good. Only Robert noticed this and offered a solution to fix the problem! I asked some of the other A+ companies if they would vent the soffits and they all said they don't do that work, but they would be happy to add more insulation, which would not fix the problem if the attic was not vented."
Response time2 days
9 neighbors recently requested a quote
Recommended by99%of homeowners
Foy's Final Touch, Inc.
4.9(
311
)
Blown-In Insulation - Install or Upgrade

Serving Downers Grove, IL and surrounding areas

Approved

In business since 2000

Free estimates

Customers say: Quality work

"Neil and his team did a great job installing new attic insulation in my home. They did a thorough job of removing all the old insulation, repairing the bathroom fan vents, fixing the soffit vents and spraying all new insulation throughout the attic. I highly recommend Neil and team. They were professional, courteous and I am highly recommend them."
Attic
Attic
Attic
Recommended by99%of homeowners
Avatar for Green Attic Insulation
Green Attic Insulation
4.3(
423
)
Spray Foam Insulation - InstallBatt, Rolled or Reflective Insulation - Install or UpgradeBlown-In Insulation - Install or Upgrade+2 more

Serving Downers Grove, IL and surrounding areas

Approved

In business since 2009

Free estimates

Emergency services offered

"I am very happy with the work done by Green Attic Insulation. David and Charlie were very friendly, professional, responsive, and flexible in working with my changing needs. I originally was looking into insulation but then discovered there was mold in my attic. As the job grew, David, Charlie, and their team worked with me to address the additional parts of the job. I really appreciate their knowledge and the thorough job they did. They took many pictures of their progress and kept me informed each step of the way. Thank you very much!"
Insulation.
Exterior Wall Insulation.
Solar Fan.
Spray Foam Insulation
Attic Insulation

+886

Response time1 day
5 neighbors recently requested a quote
Recommended by84%of homeowners
Avatar for Attic Pro
Attic Pro
5.0(
33
)
Blown-In Insulation - Install or UpgradeBatt, Rolled or Reflective Insulation - Install or Upgrade

Serving Downers Grove, 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 Koala Insulation of Chicago-West
Koala Insulation of Chicago-West
5.0(
16
)
Spray Foam Insulation - Install

Serving Downers Grove, IL and surrounding areas

Approved

In business since 2021

Free estimates

Credit card accepted

"We were pleased with all aspects. All employees were very professional and were helpful throughout the process. The work was completed on time and addressed attic insulation needs. We would highly recommed."
Insulation Projects
Insulation Projects
Insulation Projects
Response time12 hrs
1 neighbors recently requested a quote
Recommended by100%of homeowners
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Insulation questions, answered by experts

Energy-efficient homes generally have higher appraisals and appeal to buyers.

While insulation is required for all exterior walls in a house, it is not typically required for interior walls. Local and state building codes mandate that new construction homes have adequate insulation in exterior walls and ceilings to suit the local climate.

However, there are several benefits to adding insulation to interior walls. It is excellent for sound-dampening between rooms and can help with temperature control by maintaining a regulated temperature in specific rooms and lowering heat transfer between adjacent areas. Insulating interior walls can also contribute to the overall energy efficiency of your home.

You do not always need to remove old insulation before adding new. If the existing insulation is in good condition—not wet, physically damaged, moldy, or infested with pests—you can add new insulation directly on top of it for a compounding effect. You can also mix different types, such as adding blown-in insulation around existing fiberglass batts.

However, removal is recommended if the old insulation is compromised by water damage or pests. You should also remove it if you plan to install a different type of insulation, like switching from roll or batt insulation to spray foam. If the existing insulation is very old or damaged, you will likely get more benefit from removing it and starting fresh.

Yes, insulated vinyl siding increases the R-value of your home. Depending on the quality and brand of the insulated vinyl, you can get an R-value that is up to 5 times greater than traditional vinyl siding. This can be fantastic for homeowners who are trying to lower their utility costs.

There are many reasons one bedroom may be hotter than the rest of the house. The sun will quickly heat a south-facing bedroom with a large window, especially if it lacks quality curtains. If the room has poor insulation, this could let more warm outside air in. Upstairs bedrooms are often hotter than ground-floor rooms because heat rises. Finally, rooms further away from the air conditioning unit may heat up a lot if the system is not properly balanced.

The Downers Grove, IL homeowners’ guide to insulation services

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