
Serving Lake Bluff, IL and surrounding areas
Approved
Super Service Award Winner
In business since 2022
Free estimates
Emergency services offered
"kY insulation exceeded my expectations"





+82


Serving Lake Bluff, IL and surrounding areas
Approved
Super Service Award Winner
In business since 2022
Free estimates
Emergency services offered
"kY insulation exceeded my expectations"





+82

Serving Lake Bluff, IL and surrounding areas
Approved
In business since 2005
Free estimates
Emergency services offered
"Daniel went above and beyond, not only removing the old insulation and replacing with new, but fixing other issues he found in the attic. I felt that I had hired the absolute best person to do this job. He and his brother are great workers, did a fantastic job, and cleaned up afterwards."





+7

Serving Lake Bluff, 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!"





+30

Serving Lake Bluff, 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."

Serving Lake Bluff, IL and surrounding areas
Approved
In business since 2017
Free estimates
Credit card accepted
"Northern Insulation did a great job, very professional and very clean and timely. We highly recommend them"

Serving Lake Bluff, 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!"





+886

Serving Lake Bluff, IL and surrounding areas
Approved
Super Service Award Winner
In business since 2021
Credit card accepted
Offers commercial services
"I hired them to do attic insulation and garage insulation. Their works are clean and efficient."





+12

Serving Lake Bluff, IL and surrounding areas
Approved
In business since 2014
Free estimates
Warranties offered
"Dan did a great job insulating my attic. He did exactly what he said he would do, on time and at the quoted cost. He was very thorough in his work, applied foam sealant, installed baffles, installed bathroom vent access thru roof and installed blow in insulation. Nice guy as well. I'd hire him again."

Serving Lake Bluff, IL and surrounding areas
Approved
In business since 2004
Free estimates
Emergency services offered
Elevate your home with Home Genius Exteriors, setting the standard in Chicago by offering full-service solutions for roofing, siding, windows, doors, gutters and insulation. We support our veterans and communities by supporting local and national charitable organizations through our Home Genius Cares initiative. With an Owens Corning® Platinum Preferred designation, we also offer flexible payment options, industry leading warranties and a wide range of premium products tailored for your home. It's time for a different experience, entrust your next home project to a genius and schedule your free inspection today!





+58

Serving Lake Bluff, IL and surrounding areas
Approved
Super Service Award Winner
In business since 1979
Free estimates
Emergency services offered
"The Permaseal team was excellent and did a great job. They did everything for insulating my attic with incredible professionalism. Always kept me in the loop and left the job site clean every day. I would highly recommend them"





+48
Old insulation should be removed when it shows damage, contamination, or heavy deterioration. If you notice water stains, rodent droppings, mold, or large gaps, plan on taking it out to protect your home’s energy performance and indoor air quality. Removing compromised material eliminates health hazards, cuts energy loss, and sets the stage for a safer, more efficient attic—all while keeping utility bills in check.
R-value measures how well insulation resists heat flow—the higher the number, the better it slows heat transfer. The right R-value keeps your home warmer in winter and cooler in summer, saving energy year-round. Match the rating to your climate zone and have a pro verify performance over time, because moisture or settling can lower R-value and cut efficiency.
Attic insulation can stay in place for 80 to 100 years, but its performance often drops after the first 15. As dust, moisture, or mold build up, the material loses R-value and allows heat to escape. Schedule periodic inspections so a pro can tell you when replacement makes sense—helping you keep energy bills down and indoor comfort up.
You can over-insulate an attic. Beyond the recommended R-value, extra layers don’t add efficiency and can trap moisture, leading to mold or reduced performance. A local insulation pro can measure current levels, confirm the right target for your climate, and advise on any adjustments so you avoid future energy or maintenance headaches.
Insulation can be damaged by mold, pests, water leaks, or accidental electrical contact. When the material is compromised, it loses R-value and can introduce health hazards. Removing and replacing affected sections restores efficiency, while routine inspections from a qualified pro help you catch problems early and keep your attic safe and energy-smart.
From average costs to expert advice, get all the answers you need to get your job done.

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