Spray Foam Insulation in Knoxville, TN

Find top-rated spray foam contractors and save up to 33% on energy bills

💰 Estimated Energy Savings in Knoxville

33%
Average Energy Savings
Typical range: 28% - 38%
$1,426
Estimated Annual Savings
Based on $360/month average energy cost
5 years
Average Payback Period
Return on investment timeline

Note: Actual savings vary based on home size, current insulation, energy rates, and climate conditions. These estimates are based on Department of Energy data for Mixed-Humid.

Verified Contractors in Knoxville

Superior Spray Foam Systems

Specialist

Direct: 8652689675

5
5 Google reviews

Recent Reviews:

Dan Calabrese★★★★★3 weeks ago

The tech and his assistant showed up on time and worked so well together. I look forward to working with them again as my project moves forward. Amber has been great to work with as well. Dan gave me a great deal of information which help me to decide on there company. Thank you.

Mr. Northeastconfederate★★★★★a month ago

This is now the third time I've used SSFS for spray foam insulation. These folks do a great job. They're thorough, conscientious, do quality work and clean up after themselves. I've referred them to friends who have also been very happy with their work and the value of their services. I've included a photo of a small portion of the most recent job they did for me.

samson91479★★★★★a month ago

After a bad experience with another contractor we hired Superior Spray Foam Systems and they sent 2 crews that finished our project in days vs month! They saved the day so our project could go forward.

Tennesse Spray Foam LLC

Specialist

Direct: 4233681303

5
6 Google reviews

Recent Reviews:

Brett Simpson★★★★★a year ago

TSF did an excellent job on our basement/garage overhead! Patrick, Lawrence and John were extremely professional and friendly to work with. They were on time and finished the job quickly, at a good price, and it looks great! They cleaned up afterwards and the garage is actually cleaner than before they started. I highly recommend TSF!!!

Albert Rowe★★★★★5 years ago

Call back answered all questions

Shawn Cook★★★★★3 years ago

Volunteer Insulation LLC

Direct: 8656069063

5
8 Google reviews

Recent Reviews:

Ward Collins★★★★★3 months ago

Found him here on Google. Very friendly, professional, fast, and left no mess. In and out in two hours, bringing our 1500 square foot house up to code. He also helped us work with TVA to get a rebate. Best prices I could find in the area. They even worked quietly enough that none of our kids woke up from their nap. Could not recommend him more.

Eddie Renshaw★★★★★10 months ago

Contacted volunteer insulation to estimate doing a new construction house for insulation. Desmond came out on 1 day for estimate told all materials needed. Told me he would take care of picking all supplies up and ready to install on a certain day. Before sun was up he was at the house. Seems like before lunch he was done with all walls and allot of walls he started early and stayed late and my home was done before he left. He was more excited to get my house done before I was. I would highly suggest Volunteer insulation to anyone. Very knowledgeable on estimating and the actual install. Cleaned everything up. Very pleased. And his pricing is on point. I had 3 estimate and I took the middle one. My guys have told to get the busy one if you can. So I did. Thank you Desmond if you have any clients that want to see mine or talk to me. Please contact me be more than welcome to.

Charles Loy★★★★★2 months ago

Desmond did an excellent job on insulating my sunroom and providing a moisture barrier. Best prices and best work by far. He was very efficient, thorough and cleaned up behind himself. I would highly recommend and definitely use Desmond again for any work I needed done.

Foam Blocker Insulation

Direct: 8657709097

5
3 Google reviews

Recent Reviews:

Auner jose Rodríguez López★★★★★10 months ago

Foamblocker insulate my Business!! Great service.

Maria Orellana★★★★★10 months ago

Foamblocker insulate Edith Close cell my Chicken barn

Brendy Mendez★★★★★10 months ago

Yen insulation service and fast thanks to foam blocker

RetroFoam of East Tennessee

Direct: 8652522006

5
7 Google reviews

Recent Reviews:

Slade M★★★★★4 months ago

Eddie treated me very well and price was on the lower side of all the quotes I shopped. He came out and looked at the job gave me a quote and the guys were not to far behind starting the work. 50x60 steel building 2” Closed Cell Foam they knocked it out in 2 days. Finished product is amazing.

Janie Damewood★★★★★3 months ago

Recently, RetroFoam came out to insulate our garage. Our home was built in 2015, but the builder hadn't insulated above or in the walls of the garage. We received estimates from a few companies, but we were especially impressed with Eddie, the representative from RetroFoam - his attitude and professionalism stood out right away. On installation day, Nate, Gunner, and Robert arrived and did a fantastic job. They prepped the area thoroughly, completed the work efficiently, and left everything spotless. Their professionalism and work ethic were excellent from start to finish. The entire experience was smooth, and we couldn't be happier with the results. Highly recommend RetroFoam and this TEAM!

Scott Brockamp★★★★★2 months ago

The team did a great job. They were so courteous and cleaned up every place they went. I would highly recommend RetroFoam for any and all of your insulation needs. Our project was somewhat unique, and Eddie made sure that went through every option to provide the best solution for our situation. Very thorough and professional all the way.

Koala Insulation of Greater Knoxville

Direct: 8654179005

5
7 Google reviews

Recent Reviews:

Bob Golden★★★★★2 weeks ago

Koala Insulation gave me a great price and great service for adding insulation to my attic. I got 4 other quotes and theirs was the best. I worked with Bob on the estimate and scheduling. He was very professional. The crew (Dylan and Woody) provided friendly and excellent service. They called before arriving, were on time and got right to work. They were done in just over an hour. Afterwards, they showed me numerous pics of my attic with the R-60 level of insulation. I am very satisfied and look forward to saving on my energy bills.

Michael Foy★★★★★a month ago

Great response and communication every step of the way from estimate to the scope of work. Even on call backs for new request items the work was completed at god speed with quality and attention to detail. I also wasn’t paid for this review like most companies do now.

Chris Galyon★★★★★3 months ago

Koala provided blown insulation for our entire attic and did an amazing job! They were really efficient and had the job done an hour sooner than they quoted and were extremely thorough and cleaned up everything afterwards. Great people to deal with and locally owned which is exactly what I was looking for.

Accucoat Knoxville Spray Foam Insulation

🏆Certified Pro

Direct: 8655679813

4.9
58 Google reviews

Recent Reviews:

Corey Payne★★★★★7 months ago

Top notch installer! Logan was very upfront and honest in regard to some misinformation that I had received while getting bids from other installers in the area. Griffin and David thoroughly taped off the entire area and kept my Polished Concrete Floor totally clean and free from overspray. Once completed, they did an excellent job cleaning up. I will use Accucoat again and highly recommend their services.

Southern Born★★★★★a year ago

These guys are good,very professional, kept my new floor and doors covered and clean,Martin and Curtis are a good working team,they had my 30x40 metal building sealed up top to bottom in 1 day, Very impressed thanks guys,,,, D.W

Geri L ove★★★★★11 months ago

We are so pleased with the work that Griffin and David has done on our home. They were both on time, professional and their work was so clean! David and Griffin went above and beyond! I would definitely reccomend accucoat for anyone looking to insulate their home or free standing buildings. I will call Shaun again when we are ready to insulate another area of our home! Affordable, professional and super nice and easy to work with! 10/10 reccomend

Home Comfort Solutions

Direct: 8659663000

4.9
385 Google reviews

Recent Reviews:

Rolland★★★★★5 months ago

Hands down this company and its people are top notch people to work with. They address all of my HVAC needs in a timely manner all the way to a full unit replacement. From a full unit replacement to pointing out an mis-wire on a thermostat installation (I installed it myself), these guys are Johnny on the Spot. If you are looking a company and it’s representatives that are reliable, knowledgeable and fair concerning price, please do yourself a favor and use Home Comfort Solutions.

Kathy Jenkins★★★★★5 months ago

Dylan Roussel , with Home Comfort Solutions, was our service technician who arrived during the designated timeframe, & even let us know when he was on the way. He was professional, courteous and efficient. He diagnosed the problem with our main AC unit and made the necessary repairs and cleaned both of our AC units in about 2 hours. We were very pleased with his service and definitely recommend Dylan and Home Comfort Solutions for your AC problems!

Joseph L. Ortiz★★★★★a month ago

Excellent service firm with smooth scheduling, technical assessment, and solution description. As a new homeowner with a new heat pump system, it is great to have a local firm that knows what I have installed and has serviced it to make it work! Home Comfort Solutions is connected to my new manufacturer's warranty, which they helped double to 10 years. My service tech, Billy, is smart, efficient, clear in his detailing of problem/solution/cost, and absolutely an HVAC and customer service expert. He is shown here after pulling out the indoor system's main coil/condenser, which was replaced under warranty for a leak after only 11 months of use since installation. The system was installed new.

Profoam

Direct: 8659663626

4.7
3 Google reviews

Recent Reviews:

Dale Palmer★★★★★a year ago

Skinny road but...fast unload. Very nice friendy people, no problem, wouldn't hesitate to take them another load.

Simranjit Singh★★★★★6 months ago

Nice guys, quick unload. Small place for a semi but doable.

Scotty Mixon★★★★2 years ago

Great guys, usually have to call for them to offload.

Crawl Space Ninja

Direct: 8654173953

4.6
9 Google reviews

Recent Reviews:

Deborah Phillips★★★★★a month ago

I could not be more pleased with the crawl space encapsulation and great service I received from Crawl Space Ninja. Adam and his team are professional, dependable, and top-notch Superstars in my book. Michael Church left a favorable and lasting impression when he installed a radiant barrier and fixed some attic issues for me about 15 years ago, which made contacting Crawl Space Ninja an easy decision for me when I suspected that I had problems in my crawlspace. As a realtor who encounters musty odors, moisture, and mold in crawl spaces frequently, I was terribly upset to realize that I had issues in my own home. Having worked with Michael previously, I was 100% confident that his company could resolve my problems and I was not disappointed. Adam and his team did a fantastic job. My crawlspace is now clean and dry and the peace of mind I now have is priceless.

Matthew Hartsock★★★★★a month ago

This review involves a totality of my experience with Crawlspace Ninja. Last year (approx 1 year ago) we contacted Crawl Space Ninja for an estimate, as when we moved in, we discovered mold in the crawl space. They came out for the estimate and provided a quote. The downside is they had a miss in the quote since our house's foundation has a center split, which required two pumps, which added the cost of one more pump than the original quote. Kinda a bummer, but misses like this do happen. They provide the ability to finance through monthly payments, and we put enough down to have a 0% interest loan for the process. They got it installed within 3 days if I recall correctly. I can now actually go into my crawl space for turning on and off my home's water quite comfortably (better than crawling in dirt)! I forgot the guy's name that oversaw the install and installed a new door for the crawl space about a year ago, but he did a phenomenal job. Next up, shout out to *Milly* for always being super helpful and responsive for calling me back and scheduling, and for keeping us updated through the process. Finally, another shout-out to *Kyle* who came this last week for an annual inspection. I noticed the dehumidifier had an error code and called them out to check it out and just inspect the space. Kyle identified a defect in the dehu, got me on their schedule for a replacement, and had them out the next day to replace the dehumidifier. It was within warranty and was replaced without any hassle. So far my experience with Crawl Space Ninja has been excellent. They are a bit more expensive than the competitors that we saw when shopping around, but I have no regrets choosing them and would make the same decision again if I could go back.

Daniel Signa★★★★★2 months ago

I had a fantastic experience with Crawl Space Ninja, thanks to Caden and his customer service support partner Melissa. They recently assisted me with an estimate for mold remediation in the crawl space of my home, and I was truly impressed with their professionalism and attention to detail. Caden’s industry knowledge was evident from the start — he carefully assessed my situation, explained the findings in a way that was easy to understand, and provided recommendations that were tailored specifically to my home’s needs. Melissa was equally outstanding, offering excellent customer service support and making sure I had all the information I needed throughout the process. What stood out most was the genuine care they both showed for my specific situation, combined with a cost-effective approach that made me feel confident I was getting the best value. Crawl Space Ninja is clearly committed to quality and customer satisfaction, and Caden and Melissa exemplify that commitment. I highly recommend Crawl Space Ninja to anyone in Knoxville needing mold remediation, moisture control, or crawl space encapsulation services. Ask for Caden and Melissa — they are a great team!

Accu-Coat Spray Foam Insulation

Specialist

Direct: 8655679813

4.5
6 Google reviews

Recent Reviews:

John Kelleher★★★★★a month ago

From the start, we received great communication, well-presented explanation of project start and completion from Shaun Lovern. The Spray Foam crew were exceptionally polite and got to work right away. The crew also communicated well regarding spray foam details in our structure. The inside of the garage and shed looks really great. I would definitely use this company again. Thanks for a job well done Knoxville Accu-Coat!

Luca Simioni★★★★★a month ago

I contacted Shaun to get some information and a quote for spray foam (metal building) and couldn’t be happier with the results. Everyone was very knowledgeable, professional and helpful. The installers, David and Grissom, did an awesome job from prep work to cleanup. I would do business with them again and recommend this company.

Daren Brauer★★★★★3 months ago

I highly recommend Accu-Coat West Jefferson for spray foam insulation as they provided a very competitive price and were willing to work with me on schedule and scope. Mike Draper and Chad Sheets were my installers and couldn't be happier with them. They started early as I was told they would and didn't waste any time prepping the site by putting up plastic sheeting while their machine is heating the components. After they were done they did a great job cleaning up taking all the plastic with them like they weren't ever there. Only evidence that they were there is a generously/evenly coated surface of spray foam. Thanks again.

Appalachian Insulation Supply of Tennessee, LLC

Direct: 8653309902

4.4
5 Google reviews

Recent Reviews:

Robert Brown★★★★★5 years ago

Great place!!! Sweet puppies!! Good customer service

Wesley Larock★★★★★5 years ago

Great pricing great service.

Pamela Conard★★★★★5 years ago

The staff was real nice

USA Insulation of Knoxville

Direct: 8652633373

4.3
6 Google reviews

Recent Reviews:

William Alex Crowe★★★★★6 months ago

Best experience ever! The technicians Carrie and Ian were both courteous and professional. Carrie communicated with me the entire installation and allowed me to periodically inspect progress. They did not rush and their work was quality start to finish. Jeff, my sales rep, was responsive and competitive. Very pleased with the results and would have them back anytime.

Debra McCarter★★★★★2 months ago

We did not comparison shop so I can't say how our price compared to other companies. My husband had worked with USA insulation before and wanted to use them for our insulation project We think it was worth it. We noticed differences right away. Our house was much quieter. And everyone that we worked with was great. Big shout out to work crew because they were wonderful! The project manager kept us informed every step of the way. They were respectful, efficient and cleaned up everything. They left the property looking great.

Lou Ann Taylor★★★★★a month ago

I highly recommend USA Insulation. Jeff was the best salesman! No pressure and informative. Carrie and her team did an awesome job installing our insulation in the attic. We didn't hardly know they were here. Very considerate of our home and space. Was a good experience all around.

Valor Insulation LLC

4.2
5 Google reviews

Recent Reviews:

Lucy Shular★★★★★10 months ago

Awesome Service!! Joel was very helpful and did exactly what he told me!! Will definitely us him again!

Red “Dad”★★★★★3 years ago

Joel and his team are top notch.ive used them 2x and each time they've performed their job flawlessly. They've also not asked for any money upfront. Infact , Joel came out and looked at the job when it was done prior to asking for payment. Veteran owned and operated. I highly recommend this company to everyone.

Phillip G★★★★★a year ago

Joel and his crew did a great job and for a great price. Would definitely recommend and use for other jobs.

CFI Insulation

Direct: 8655884464

4
4 Google reviews

Recent Reviews:

Nathaniel Graham★★★★★2 years ago

Colin Bartlett★★★★★a year ago

Richard Wendo Akakpo★★★★★a year ago

Dale Insulation of Knoxville

Direct: 8659702600

3.4
16 Google reviews

Recent Reviews:

Jesse Glow★★★★★a year ago

Overall great experience with this company. From the salesmen, Alonzo and the office team, and all the way down to the installers, they handled the job with excellent professionalism and executed it in a very timely fashion. I would recommend the team at Dales to anyone and everyone that has residential or commercial properties that are in need.

Julie Hamlin★★★★★7 years ago

Dale’s came out as the contracted and insulated my sheshed. They did a great job. I recommend.

Diane Landers★★★★★a year ago

Excellent and timely service. I highly recommend Dale Insulation.

Frequently Asked Questions — Spray Foam Insulation in Knoxville

Is spray foam insulation a good investment in Knoxville?
For homes in mixed-humid climates like Knoxville, TN, spray foam is typically an excellent investment. The combination of hot summers, cold winters, and significant humidity means your home faces insulation challenges year-round. Spray foam addresses all three — providing thermal insulation in both seasons while controlling moisture infiltration. Most homeowners in TN see payback periods of 4–7 years. As with any tight building envelope, ensure your home has adequate mechanical ventilation to manage interior moisture.
How does humidity affect spray foam insulation performance in Knoxville?
In mixed-humid climates like Knoxville, TN, moisture management is as important as thermal performance. Closed-cell spray foam acts as a Class II vapor retarder, preventing moisture from infiltrating walls and attics where it causes mold and structural damage. This dual function — insulation plus moisture control — is why spray foam outperforms traditional insulation options in TN's climate. However, because the building envelope becomes tightly sealed, proper mechanical ventilation is strongly recommended to allow interior moisture from daily activities to escape without losing conditioned air.
Is spray foam insulation worth the cost?
For most homeowners, yes. Spray foam creates an air-tight seal that traditional insulation cannot match, reducing energy bills by 15–35% annually. It also adds structural rigidity, acts as a moisture and vapor barrier, reduces outside noise, and can increase home resale value. The higher upfront cost compared to fiberglass is typically recovered within 3–7 years. One important note: because spray foam creates a very tight building envelope, proper mechanical ventilation is important to maintain healthy indoor air quality and prevent interior moisture buildup. This is typically handled by an Energy Recovery Ventilator (ERV) — a system that brings fresh outside air in while pushing stale air out, recovering the energy from the outgoing air so you don't waste what you paid to heat or cool — or a Heat Recovery Ventilator (HRV), which works similarly but is optimized for cold climates. A qualified contractor will assess whether your home needs ventilation upgrades as part of the installation.
How much does spray foam insulation cost?
Spray foam insulation typically costs $1.00–$3.00 per square foot installed, depending on the type and your location. Open-cell foam runs $0.44–$0.65 per board foot, while closed-cell foam costs $1.00–$2.00 per board foot. A typical 2,000 sq ft home attic costs $2,000–$6,000. Most homeowners recoup this investment within 3–7 years through energy savings of 15–35% annually.
What is the difference between open-cell and closed-cell spray foam?
Open-cell spray foam is softer, less dense, and less expensive. It expands significantly and is ideal for interior walls, attics, and soundproofing. Closed-cell spray foam is denser, stronger, and provides a moisture barrier — making it better for exterior applications, crawl spaces, and areas prone to flooding or humidity. Closed-cell also has a higher R-value per inch (R-6 to R-7 vs R-3.5 to R-4 for open-cell). One key difference: open-cell foam allows some vapor movement, while closed-cell acts as a vapor barrier — an important consideration for your home's ventilation needs.
How long does spray foam insulation last?
Spray foam insulation is one of the most durable insulation options available, with a lifespan of 80+ years when properly installed. Unlike fiberglass batting which can sag and settle over time, spray foam maintains its shape and insulating properties indefinitely. It will typically outlast the building it is installed in.
How do I find a qualified spray foam insulation contractor?
Look for contractors who are licensed, insured, and have verifiable reviews. Spray foam requires specialized equipment and training — improper installation can cause off-gassing, adhesion failure, or fire hazards. Ask for references, verify their insurance, and get at least 2–3 quotes. A qualified contractor will also assess your home's ventilation needs — a tightly sealed spray foam installation requires adequate mechanical ventilation to prevent moisture and indoor air quality issues. FoamMatch pre-screens all listed contractors for licensing and insurance so you can compare verified professionals in your area.
How long does spray foam installation take?
Most residential spray foam jobs take 1–2 days depending on the size of the area. A standard attic takes 4–8 hours. After spraying, the foam cures within 24 hours, though most contractors recommend waiting 24–72 hours before occupying the space due to off-gassing during the curing process.
Does spray foam insulation need to be replaced?
No — spray foam insulation does not need to be replaced under normal circumstances. Unlike fiberglass insulation which degrades over time, spray foam maintains its R-value and air sealing properties for the life of the building. The only reasons to remove or replace spray foam are water damage, renovation work, or improper original installation.