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Top-Rated Insulation pros in Knoxville - Updated Nov 2026

Avatar for CSI Insulation
CSI Insulation
New to Angi
Spray Foam Insulation - InstallBatt, Rolled or Reflective Insulation - Install or UpgradeBlown-In Insulation - Install or Upgrade+1 more

Serving Knoxville, IL and surrounding areas

Approved

In business since 2004

Free estimates

Offers commercial services

We take great pride our experience, expertise, quality, and customer service that we provide to meet the consumer's needs. It is our mission to provide excellent workmanship and complete customer satisfaction, from the start to the completion of a project. Our reputation is based on service, safety, and quality, regardless of how large or small the job.

Project Photos
5 neighbors recently requested a quote
Avatar for Home Comfort Insulation
Home Comfort Insulation
4.6(
12
)
Batt, Rolled or Reflective Insulation - Install or UpgradeBlown-In Insulation - Install or UpgradeInjection Insulation - Install+2 more

Serving Knoxville, IL and surrounding areas

In business since 1948

Free estimates

Emergency services offered

"The team were very professional, owner came at end of day to check up on quality of job (I asked him to look at my attic insulation, he could have easily conned me into paying for more - he didnt, and told me I didnt really need it... he found another insulation issue but recommended I solve it DIY style!)... so he wasnt interested in the $$$$.... Once he found I was happy with work he left me an invoice, no pressure to pay on the spot. The work has done exactly what he promised and I can recommend using them."
Recommended by88%of homeowners
Avatar for Home Comfort Keepers, LLC
Home Comfort Keepers, LLC
4.9(
12
)
Blown-In Insulation - Install or UpgradeBatt, Rolled or Reflective Insulation - Install or Upgrade

Serving Knoxville, IL and surrounding areas

In business since 2020

Free estimates

Credit card accepted

"Very timely response to initial communication. Followed With questions and details about the ceiling insulation project I was seeking information for. I received a text the day before the work was done to confirm arrival time. The work crew showed up on time and were courteous and did a great job Leveling the insulation and taking care of areas that are hard to get to. They also cleaned up their work area before leaving. I highly recommend this group for blowing in ceiling or attic insulation."
Response time12 hrs
Response rate85%
9 neighbors recently requested a quote
Avatar for Crawlspace / Basement Waterproofing Solution
Crawlspace / Basement Waterproofing Solution
4.4(
256
)
Batt, Rolled or Reflective Insulation - Install or UpgradeBlown-In Insulation - Install or UpgradeInjection Insulation - Install+2 more

Serving Knoxville, IL and surrounding areas

In business since 1998

Free estimates

Credit card accepted

"We had a different person who came out before them who was horrible and then I tried Crawlspace/Basement Waterproofing Solution because they were reasonably priced and they worked with me on scheduling their time so that they would be there when the electrician are there. They worked together with the electricians and were all done. They were wonderful. It was an all-day project but everybody worked together. Everybody showed up, everybody cooperated, and it was all done in one day with a big job. They were very good with the whole thing. The price was really good deal and all they have to do is seal from the outside to the inside. The biggest thing for us is that, they were here when everybody is here to do one thing. They are really good and we only had one problem but it was all filled up. This company gave exactly what we needed, showed up when they are supposed to, and did a great job. It was perfect. I would recommend right away to anybody before anybody else.  We were very impressed with them."
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+13

Recommended by90%of homeowners
Avatar for Preferred Home Improvements
Preferred Home Improvements
4.7(
12
)
Batt, Rolled or Reflective Insulation - Install or UpgradeBlown-In Insulation - Install or UpgradeInjection Insulation - Install+2 more

Serving Knoxville, IL and surrounding areas

In business since 2010

Free estimates

Emergency services offered

"Dillon was a great guy and worked fast and efficient. My house is 50 plus years old and the duct work had never been cleaned. Post the work, the house even smelled better. I am in the middle of a complete remodel and living in the house. I had all 11 vent grilles removed -(saved Dillon a pile of time not having to remove and re-install) and I would have thought a discount would have been in order."
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+30

Recommended by100%of homeowners
Cronkhite Home Solutions
3.2(
169
)
Blown-In Insulation - Install or UpgradeBatt, Rolled or Reflective Insulation - Install or Upgrade

Serving Knoxville, IL and surrounding areas

In business since 2011

Free estimates

Credit card accepted

"I wanted reflective foil installed under the joist in my attic to help cut attic Heat. The Cronkhite sales rep suggested their own insulated foil product, which I deemed Superior to what I had planned. They installed their material, we're careful about the blown in attic insulation and stepping on the existing ceiling joists. they did a good job, in a timely manner, for a job that was difficult, hot and not very pleasant."
 Medium Grey Double Four Traditional Lap Siding
 Eco Fiberglass Insulation
 This deck has a diagonal design
 Before
 Before

+55

Response time1 day
90 neighbors recently requested a quote
Recommended by80%of homeowners
Showing 1-10 of 23
Insulation FAQs, answered by experts

The thickness of floor insulation will depend on the R-value you plan to achieve. R-value varies on the type of material as well as its thickness and density. Insulation materials with low R-values can be layered to match the value of denser materials. As long as your floor insulation is packed tightly, seals the area from drafts, and doesn’t prevent ventilation, it can be as thick (or thin) as you need.

Regular inspections for moisture damage, pest infestations, and proper R-value performance help maintain efficiency.

On it own, aluminum siding has a relatively low insulation value (also called R-value); aluminum siding has an R-value of 0.61. However, you can purchase insulated aluminum siding to increase the R-value to between 2 and 5. You can also install additional insulation within your walls to help maintain temperatures within your home. On average, insulation costs $1,825 to install throughout the typical home.

The cost to rent an insulation vacuum ranges between $250 and $350 per day. The price will increase if you choose to rent for additional days, but you may get a discounted daily rate if you rent it for a whole week, which could cost up to $1,000. Once you've removed the insulation and are ready to replace it, the cost to rent a blown-in insulation machine ranges between $100 and $500.

A-frame houses pose specific challenges that can make heating difficult. Their open concept design with high ceilings can lead to a colder lower floor and a warmer upper floor. A ceiling fan that pushes warm air down or pulls cold air up, depending on the season, can easily counteract temperature issues. Additionally, certain types of heating do better in these homes than others. For example, heated floors tend to be more practical and energy efficient than baseboard heating.

The Knoxville, IL homeowners’ guide to insulation services

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