Top-rated insulation pros.

Best insulation pros near Crystal Lake, IL

Enter your zip and get matched with up to 5 pros

Need a pro for your insulation service project in Crystal Lake, IL?

Select your specific project to find the pro for you.

TRUSTED BY CRYSTAL LAKE, IL HOMEOWNERS

  • Average homeowner rating star icon4.5
    Average homeowner rating
  • Verified reviews icon251
    Verified insulation services reviews

Top-Rated Insulation pros in Crystal Lake - Updated Nov 2026

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 Crystal Lake, 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
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+14

Response time11 hrs
2 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Paragon Insulation
Paragon Insulation
4.8(
63
)
Blown-In Insulation - Install or UpgradeBatt, Rolled or Reflective Insulation - Install or UpgradeInjection Insulation - Install+2 more

Serving Crystal Lake, IL and surrounding areas

Approved

In business since 1997

Free estimates

Warranties offered

"We were so happy with our experience with Randy from Paragon Services, we have had him out 2 times in the last month to address both the attic and the crawl space of our new home. After Randy and his team replaced our fiberglass insulation in the crawl space with spray foam, it raised the average air temperature on our first floor by over 15 degrees! I has made a HUGE difference right away and I can’t wait to see the $$ we save on our heating/air conditioning. Paragon Services is fast to respond to messages and phone calls. Randy was able to come out for a quote within a few days we were on the schedule within a week or two. On installation day, the crew was on time and professional. I was blown away by Randy’s knowledge and honesty. I never felt rushed during our conversations or pushed to commit to a purchase. He took his time to investigate the issues, develop an appropriate plan of action, and prepare a thorough quote. He went over everything with me to make sure I understood what he was proposing and why. I learned so much just in our few conversations. I also loved that he not only addressed the issue I called him out for, but made sure any related issues were addressed as well. The prices are very reasonable and their customer service is excellent! I definitely recommend Randy and Paragon Services!"
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+24

Response time4 days
Response rate100%
5 neighbors recently requested a quote
Avatar for Mendieta Insulation, LLC
Mendieta Insulation, LLC
4.7(
106
)
Spray Foam Insulation - InstallBlown-In Insulation - Install or UpgradeBatt, Rolled or Reflective Insulation - Install or Upgrade

Serving Crystal Lake, IL and surrounding areas

Approved

In business since 2005

Free estimates

Emergency services offered

"Daniel and his brother are very professional, know what they are doing and are great problem solvers and equally as important, really care about the work they are doing. They found that a bathroom vent was not installed properly and ended up going to Home Depot twice to hookup the vent properly. They did the right thing and got it done right. I will be working with Daniel and Mendieta Insulation again and I will refer them to family and friends."
2 story house
2 story house
2 story house
2 story house
2 story house

+7

5 neighbors recently requested a quote
Recommended by92%of homeowners
Avatar for ARC INSULATION
ARC INSULATION
4.6(
96
)
Spray Foam Insulation - InstallBlown-In Insulation - Install or UpgradeBatt, Rolled or Reflective Insulation - Install or Upgrade+1 more

Serving Crystal Lake, IL and surrounding areas

Approved

Super Service Award Winner

In business since 1993

Free estimates

Warranties offered

"Our 1926 home had an uninsulated crawl space that made our hardwood floors freezing and overworked our furnace. We got five estimates, and David with Arc Insulation stood out?he arrived on time, used a temperature gun to show where we were losing heat, and brought insulation samples to show what they would use for our job. Their estimate was very detailed and reasonable. Luis and Juan came out and completed the job in just a few hours and were professional throughout. We?re happy with the results and would highly recommend Arc Insulation!"
Air Duct Cleaning Project
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+30

3 neighbors recently requested a quote
Recommended by92%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 Crystal Lake, IL and surrounding areas

Approved

In business since 1996

Free estimates

Warranties offered

"I met Robert for an estimate. Robert is a straight shooter, gave a competitive estimate, and no pressure at all. I decided to go with him after another estimate I got was borderline gouging. I was impressed with how efficiently and quickly his crew worked. These guys know what they are doing. Many companies can insulate an attic but Attic Air can also replace attic and bathroom fans. Make sure your soffit though has holes in it to let air into the attic. This was an optional piece for me but the crew chief explained to me the new attic fan that was being installed would burn out if there was not enough air coming in from the soffit for the fans to circulate. I also took advantage to replace two other very old bathroom fans with more powerful Panasonic 100 cfm LED fans to take advantage of the crew being in the attic. My second floor used to be 3 degrees cooler than what the thermostat showed on the first floor, but is now 1 degree or no difference. I am hoping I won't need a separate cooler fan in the summer on the second floor. Didn't need a separate heater for winter at least or shiver unless I brought up the temperature on first floor."
Response time2 days
4 neighbors recently requested a quote
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 Crystal Lake, 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
6 neighbors recently requested a quote
Recommended by84%of homeowners
Avatar for Daniel Nagel
Daniel Nagel
4.6(
42
)
Batt, Rolled or Reflective Insulation - Install or UpgradeBlown-In Insulation - Install or UpgradeInjection Insulation - Install

Serving Crystal Lake, IL and surrounding areas

Approved

In business since 2014

Free estimates

Warranties offered

"We reached out to Dan with the issue of freezing pipes and cold rooms in our old house. Dan inspected the house and proposed a plan to remedy these issues. Aside from the more traditional air sealing and insulation solutions, Dan also recommended insulating the area of our house above our soffit, which was difficult to access but that appeared to be a major insulation issue. I should add the other firms we requested quotes for did not identify this area in their proposal. I firmly believe the proposals from the other firms would not have fixed our issues. Dan worked for ~2 weeks on air sealing our attic and house, adding insulation to our attic, removing our soffit and adding insulation and reinstalling soffit. Work was done well and within budget and at a fair price. Dan is very easy to work with and takes pride in his work. We are very happy to report our pipes have not frozen and the cold rooms are no longer cold - would highly recommend Dan to others - he went above and beyond."
Response time1 day
Recommended by100%of homeowners
...
Showing 1-10 of 138
Insulation FAQs, answered by experts

Yes, many services include adding insulation for energy efficiency. Confirm with your contractor.

Yes, eco-friendly blown-in insulation options include materials made from recycled cellulose or wool. These offer excellent thermal performance and sustainability, reducing energy consumption and environmental impact while enhancing home efficiency.

For a DIY solution to protect an outdoor faucet from freezing, you can craft a cover using spare rags, a durable plastic bag, and duct tape. However, be aware that this method may not be as effective as a store-bought cover. Fabric like rags or old towels can absorb water, which could freeze and cause problems. While a DIY cover can work as a temporary stopgap, a proper outdoor faucet cover is inexpensive (often $5 or less), easy to install, and readily available, making it the recommended long-term solution.

Garage door insulation can last anywhere from 20 to 100 years depending on the type of insulation. Cellulose has the shortest lifespan coming in at between 20 and 30 years, while spray foam, mineral wool, and fiberglass can last between 80 and 100 years with proper maintenance. 

Humidity plays a role in how long more susceptible insulation materials—like fiberglass—last. Once fiberglass batts reach the 15-year mark, you'll need to routinely inspect your insulation to ensure that it is in mint order.

The average cost to install insulation is around $1,800, but you could pay anywhere between $500 and $4,500, depending on various factors. Some of the things that have a significant influence on your pricing include the following:

  • Size of the area 

  • Type and R-value of the insulation 

  • Whether your space is finished or unfinished

  • Accessibility of the area

  • Your geographical location

  • Amount of site preparation, especially for blown-in insulation

  • Whether or not you need old insulation removed

The Crystal Lake, IL homeowners’ guide to insulation services

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