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In homes across Knoxville, homeowners grapple with inefficiencies in insulation and drafty windows. At RetroFoam of East Tennessee, we're here to …
The Best Insulation Contractor Company in Knoxville
Compare top-rated insulation contractor providers in Knoxville. Profiles include verified reviews, service details, and direct contact options.
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Verified Insulation Contractor in Knoxville, TN
We show only active businesses that pass moderation. Results are specific to Knoxville and nearby service areas, and inactive profiles are removed to keep the list current.
Real reviews for insulation contractor
Ratings and reviews come from customers who used the service. Compare insulation contractor pros in Knoxville by experience, responsiveness, and value before you reach out.
Local-first search in Knoxville
Filter by neighborhood, check locations on the map, and find providers close to home or work in Knoxville. Listings are refreshed regularly — October 2026.
Booking in Knoxville — October 2026
Looking for insulation contractor in Knoxville? This page lists verified local providers with ratings, reviews, and contact options. We show active businesses only — profiles are moderated and updated by owners.
Compare pros by experience, price range, and customer feedback. Many providers offer free estimates or same-day service for common requests. Use filters and the map to find someone close to your address.
Before you hire
- Read the most recent reviews for your specific type of job.
- Ask about licensing and insurance when required for this trade.
- Get a written estimate for work over a few hundred dollars.
- Confirm availability and any trip or emergency fees upfront.
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Recent reviews in Knoxville
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James Rainwater
Had my garage attic insulation blown in. George and Jack did an outstanding job. Very professional and explained everything and took the time to answer all my questions. The insulation made a huge difference in the garage. Will defiantly be using RetroFoam of East Tennessee for future jobs. Highly recommend!!
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Susan Corkern
I would very highly recommend Retrofoam. After speaking with the owner we hired them to insulate our garage and part of our new renovation. This is an excellent option to ripping out the drywall. They showed up on time and worked until the job was complete. They prepped the rooms well and when they were done, cleaned up completely. It been over a month since the work was done and we are are amazed at how warm our garage and home are now. We love it and are so glad we worked with Retrofoam!
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Donnie Floyd
We had foam put in the walls last week, and we can tell a big difference in temperature. Robert, Jack, Nathan, and George did a great job and cleaned their workspace really well. I will reach out to this company again in the future.
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Brad Thomas
RetroFoam did a fantastic job sound proofing the master bedroom of one of my custom homes. Robert, George, Jack, and Nathan was very professional, timely, and even sent me pictures of the finished results. Will definitely use again!
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Carol Mcmillan
Cannot express the professionalism and friendliness from the boss to the installers this was a great group to work with. Did a great job and cleaned up after themselves. Would definitely recommend with job well done.
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Trent Maxfeldt
I've known of GES and Eddie Sanford's excellent reputation from friend's positive experiences. Although I only needed a small amount of foam insulation, I contacted Eddie for the job. It's been a huge improvement since adding the foam. It's been a few weeks with mild temperatures so hard to tell if my heat and air bill is less, BUT I know there will be! How do I know this? Because I can't hear the trash truck anymore at 6am! I highly recommend the retrofoam system with Eddie and his crew installing it!
