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  • Average homeowner rating star icon4.6
    Average homeowner rating
  • Verified reviews icon73
    Verified insulation services reviews

Top-Rated Insulation pros in Karns - Updated Nov 2026

Avatar for USA Insulation of Knoxville
USA Insulation of Knoxville
4.9(
38
)
Blown-In Insulation - Install or UpgradeBatt, Rolled or Reflective Insulation - Install or UpgradeInjection Insulation - Install

Serving Karns, TN and surrounding areas

Approved

In business since 2021

Free estimates

Warranties offered

"The company rep came out as scheduled and conducted a thorough and professional estimate for the added insulation. Then the installers came out and again did an outstanding job adding insulation to our attic. They worked well as a team and did an excellent job."
Trucks
35 Years
35 Years
The Start
Blown In Insulation

+41

Response time1 day
Response rate92%
47 neighbors recently requested a quote
Avatar for Insulation Commandos
Insulation Commandos
5.0(
15
)
Blown-In Insulation - Install or UpgradeInjection Insulation - Install

Serving Karns, TN and surrounding areas

Approved

In business since 2025

Free estimates

Emergency services offered

"Matthew did a thorough quote at my house shortly before Thanksgiving. Matthew was very professional, on-time and friendly. The technology was impressive as you could see the ?cold spots? around my attic space. I plan to execute the job after the holidays. I highly recommend Matthew and Insulation Commandos if you need any insulation related work."
Project Photos
Project Photos
Project Photos
Response time12 hrs
Response rate100%
48 neighbors recently requested a quote
Avatar for RetroFoam of East Tennessee
RetroFoam of East Tennessee
5.0(
11
)
Blown-In Insulation - Install or UpgradeSpray Foam Insulation - InstallInjection Insulation - Install

Serving Karns, TN and surrounding areas

Approved

In business since 2014

Free estimates

Warranties offered

"Eddie fully explained the benefit of the planned level of insulation for our attic, uses quality Owen's Corning fiberglass blown in insulation and recommended adding an roof vent attic fan to remove heat/moisture in the summer and moisture in the winter. Currently, we have passive eve vents and roof ridge vent. Cooling inside of the roof with air flow should help extend the life of the shingles by removing stagnant hot air. We chose an electric roof vent fan rather than solar because of the # of cloudy days in our area and humidity. Everything was done quickly on scheduled time, all contacts were professional, kept our home as clean as possible and swept up loose insulation. Pricing was very competitive plus we qualified for TVA energy rebate."
Open cell spray foam
Open cell sprayfoam on attic wall
Open Cell spray foam on flat roof deck
Open cell spray foam on roof deck
Open cell on roof deck

+9

Response time8 hrs
Response rate95%
24 neighbors recently requested a quote
Avatar for True Seal Spray Foam Insulation LLC
True Seal Spray Foam Insulation LLC
5.0(
2
)
Spray Foam Insulation - Install

Serving Karns, TN and surrounding areas

Approved

In business since 2025

Free estimates

Offers commercial services

True Seal Spray Foam Insulation LLC is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests and make their concerns the basis of our business.

Metal building
Metal building
Metal building
Barndo
Barndo

+3

Response time5 hrs
Response rate100%
22 neighbors recently requested a quote
Avatar for Torchbearer Construction
Torchbearer Construction
5.0(
5
)
Batt, Rolled or Reflective Insulation - Install or Upgrade

Serving Karns, TN and surrounding areas

Approved

Free estimates

Credit card accepted

"We were very pleased with the entire process, from the initial evaluation to the job execution and final results. Very professional and transparent, and we were told to call them back if any issues come up. I would recommend their services to someone else."
Damaged Sheathing
Missing Flashing
Damaged Siding
Repaired Siding
Flashing Progress

+4

11 neighbors recently requested a quote
Avatar for On The Spot
On The Spot
5.0(
14
)
Batt, Rolled or Reflective Insulation - Install or UpgradeBlown-In Insulation - Install or Upgrade

Serving Karns, TN and surrounding areas

In business since 2021

Free estimates

Credit card accepted

"James and his crew did a phenomenal job with the insulation job! His communication was great. Very honest and upfront about what can and can’t be done. No trying to finesse an upsale or anything like that. I'm very glad we went with James and I'd highly recommend him to anyone looking."
Crawlspace
Crawlspace
Crawlspace
Crawlspace
Crawlspace

+3

Response time8 hrs
Response rate100%
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Insulation FAQs, answered by experts

It’s technically possible to install loose-fill cellulose insulation without a blower, but it’s much more time-consuming, tedious, and dangerous. You’ll need to wear the proper protective coverings to handle the cellulose after it’s been doused in boric acid; use a shovel when you can to transport the material from the bag into the wall cavity.

That said, if you purchase cellulose materials at a home improvement store, ask if they rent out blowers for free or at a discounted rate. In many cases, if you buy the material from the store, they’ll rent out the blower at no extra cost.

The lifespan of cellulose insulation is 20 to 30 years, on average. That said, it’s important to start checking your insulation after year 10 to check for degradation, mold, mildew, and other potential problems. Every 10 years, you should also confirm your home’s insulation is in line with updated local building codes.

It depends on your needs and preferences, though many homeowners think it is worth it. Not only is blown-in insulation easy to install, but it is highly efficient with thermal regulation. Most types are mold-resistant, flame-resistant, insect-resistant, and, most importantly, completely safe.

If you have bubble wrap lying around the house and you don’t care about the odd look, taping bubble wrap over a window is a very affordable way to insulate it. Another inexpensive option for insulating windows is to add new caulk around the glass. This step quickly cuts down on air drafts for older windows, and a tube of caulk only costs a few dollars. Adding plastic shrink film around the glass is another cost-effective option. You can purchase a kit of plastic film for a few dollars per window.

Because of the moisture concern, open-cell foam requires a vapor barrier. The barrier protects against high humidity and moisture exposure in rooms such as basements, bathrooms, or exterior walls. It wouldn't be necessary in dry interior spaces.

The Karns, TN homeowners’ guide to insulation services

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