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4.8

(283 reviews)

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Avatar for Weather Shield Insulators
Weather Shield Insulators
5.0(
27
)

Serving Oak Brook, IL and surrounding areas

Approved

In business since 2008

Free estimates

Warranties offered

"I am extremely satisfied with Weather Sheild Insulation. Mr. Gonzalez was courteous , professional, prompt, knowledgeable and very informative. He answered all my questions, gave me several options with Quality materials at a great price. Clean and efficient. I highly recommend."
Additional Photos
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+14

Response time2 hrs
4 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Corona Insulation
Corona Insulation
4.8(
71
)

Serving Oak Brook, IL and surrounding areas

Approved

In business since 2016

Free estimates

Customers say: Quality work

"Ricardo was not the cheapest but knew what I needed in a room ruined by freeze/thaw action last winter. He went the extra step and installed ceiling insulation as well."
Response time2 days
16 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for ARC Insulation, Inc.
ARC Insulation, Inc.
4.7(
49
)

Serving Oak Brook, IL and surrounding areas

Approved

In business since 1993

Free estimates

Warranties offered

"Everyone at Arc Insulation knew their product and were well versed in explaining the process. Overall happy with the work."
My Work.
Our Work
Our Work
Our Work
Our Work

+8

Response time2 days
56 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for ARC INSULATION
ARC INSULATION
4.6(
95
)

Serving Oak Brook, IL and surrounding areas

Approved

Super Service Award Winner

In business since 1993

Free estimates

Warranties offered

"Arc was great from the start. We were given a complimentary consultation by Steve Garrett, who gave us a detailed explanation on the issues we may have with our attic insulation and why our energy bills may be so high. We chose to have our attic insulated and our ducts sealed. Our ducts saw a 93.5% improvement, and we immediately noticed the difference in the temperature of our second floor. Even during this prolonged heat wave, we have been able to keep our temperatures much lower than before. The attic insulation has also decreased the temperatures of the upstairs. It has been a remarkable difference. We are fully expecting our house to be more comfortable in the winter as well. Steve is honest and reliable and we would not hesitate to recommend Arc to anyone who needs insulation and duct work."
Air Duct Cleaning Project
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+30

33 neighbors recently requested a quote
Recommended by93%of homeowners
Avatar for K & Y Insulation
K & Y Insulation
4.9(
56
)

Serving Oak Brook, IL and surrounding areas

Approved

Super Service Award Winner

In business since 2022

Free estimates

Emergency services offered

"Carlos and Arturo did an amazing jog with my attic insulation and basement walls insulation. The price was the most competitive, Carlos was the most experienced, honest and know from all the companies quoted the job. I would definitely recommend"
Insulation Projects
Insulation Projects
Insulation Projects
Insulation Projects
Insulation Projects

+82

Response time1 day
Response rate91%
75 neighbors recently requested a quote
Avatar for Attic Air
Attic Air
4.9(
257
)

Serving Oak Brook, IL and surrounding areas

Approved

In business since 1996

Free estimates

Warranties offered

"Attic Air absolutely lived up to their reputation. They did a GREAT job! I did my research in creating a short list of 3 bidders for the job. I have a bi-level house (4 levels) with 2 attics. We had black mold on the underside of the roof which we had remediated a week before having Attic Air come in to fix our ventilation and insulation issues. Our upstairs floor was cold in the winter and hot in the summer. The attic ventilation and insulation needed to get fixed, and I wanted to make sure I hired a good company to do it the right way so I never had to worry about it again. I made the right choice. The temperature throughout the house is so much more even now. Before Attic Air came out, the basement and sub-basement were freezing and the first and second floors were warm and hot. My over-sized top of the line Trane a/c unit was working overdrive to try to cool the 2nd floor and never could do it. The top floor is so much cooler now than before. It's really going to save my a/c unit in the long run. Attic Air was not the lowest bid of the 3, but you get what you pay for. If you want to get the best quality this is the company you want. I would haven't have changed a thing. Worth every penny!"
Response time2 days
9 neighbors recently requested a quote
Recommended by99%of homeowners
Avatar for Northern Insulation
Northern Insulation
4.8(
20
)

Serving Oak Brook, IL and surrounding areas

Approved

In business since 2017

Free estimates

Credit card accepted

"Efficient and professional. The inspector on this new construction had one issue with insulation and Ryne came out that day and his guys corrected it that day. Smooth and on top of it. I wish all my subs were that good."
Response time1 day
Response rate94%
1 neighbors recently requested a quote
Avatar for Koala Insulation of Chicago-West
Koala Insulation of Chicago-West
5.0(
16
)

Serving Oak Brook, IL and surrounding areas

Approved

In business since 2021

Free estimates

Credit card accepted

"Koala Team was excellent starting with John Anthony giving us a quote immediately after looking at the space. He told us about a rebate and applied it off the top. Team showed up on time, they were neat, did a beautiful job of putting the foam insulation in. We are very happy and would definitely recommend Koala to our friends and neighbors."
Insulation Projects
Insulation Projects
Insulation Projects
Response time12 hrs
2 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Green Attic Insulation
Green Attic Insulation
4.3(
419
)

Serving Oak Brook, 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
9 neighbors recently requested a quote
Recommended by85%of homeowners
Avatar for Attic Pro
Attic Pro
5.0(
28
)

Serving Oak Brook, 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 rate91%
21 neighbors recently requested a quote
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Showing 1-10 of 167
Insulation questions, answered by experts

R-value stands for resistance value and is a number assigned to insulation that states how good the insulation is at heat transference (insulation). The R-value of injection foam is around 4 which homeowners will be happy to know is actually quite good. Another benefit of injection foam versus fiberglass foam is that the colder it gets, the more injection foam retains its resistance properties, whereas fiberglass tends to lose its efficiency in colder temperatures.

Insulating windows with plastic works, but it can be time-consuming, and the end results can—and often do—end up lacking in aesthetics. Window film and caulking your windows to make sure there are no drafts are two options that increase the energy efficiency of your home in a low-cost way. Plastic can be a good strategy while you consider alternatives.

On average, insulating an attic costs about $2,500, with a typical range of $1,500 to $3,500. The final price often depends on the attic's size, with costs generally falling between $1 to $3 per square foot. For example, insulating a 1,800-square-foot attic would likely cost between $1,800 and $5,400.

If the project involves removing old insulation, this can add an average of $900 to the total cost, bringing a full removal and reinsulation project to around $3,000.

Several factors influence the overall cost:

  • Insulation Type: Prices per square foot vary significantly by material.

  • Reflective: $0.50–$1.50

  • Blown-in: $1–$4

  • Batt: $2–$4

  • Loose-fill: $2–$5

  • Spray foam: $2–$5

  • Structural insulated panels (SIPs): $4–$7

  • Project Complexity: Factors like sealing air leaks, poor attic accessibility, and required inspections can add to the cost.

  • Removal Issues: The discovery of mold, asbestos, or pests during the removal of old insulation can substantially increase the price.

Yes, PEX pipes should be insulated in certain situations. While insulation is not always necessary for pipes running through insulated interior or external walls, it is recommended for any pipes located in uninsulated rooms, unheated areas, or outside, especially in regions with cold winters. The primary reason is to prevent freezing. Although PEX is more resistant to cracking from freezing than other materials, repeated freezing and thawing can weaken the pipes over time, increasing the risk of a burst.

The most energy-efficient windows are double—or triple-pane windows with low-emissivity (Low-E) coatings and gas fills between the panes. These windows reduce heat transfer, prevent drafts, and help maintain a consistent indoor temperature. But if replacing windows isn’t in your budget, pairing your existing windows with insulating window treatments can still make a noticeable difference in home comfort and monthly bills. 

The Oak Brook, IL homeowners’ guide to insulation services

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