Get the absolute best insulation for your home.

Whether your in Arnold, or Florissant spray foam will greatly improve the comfort inside your home while reducing your energy loss!

SPF insulation will help you save on energy costs and lowers utility bills by creating a tight seal and preventing air movement. The US Department of Energy (DOE) studies show that 40% of your home's energy is lost due to air infiltration. This air infiltrates the home in the form of drafts through walls sockets, windows and doorways. Spray foam expands and completely fills every tiny hole and crevasse providing a superior air seal combined with a powerful R-Value per inch of installed spray foam.

See how spray foam works in summer and winter


If you’re interested in upgrading your home insulation to spray foam, we’ve got you covered! We make the process so easy (and clean)! Our usual install process can be completed in hours, depending on the size of your St. Louis area home.

spray in insulation Arnold

We’ll make your space comfortable

  • noise
    Reduce outside noise

    Spray foam will lessen outside, unwanted noises, giving you a better nights rest. Let us give you silence!

  • air-filter
    Stop air leaks & have cleaner air

    One of the many benefits of spray foam is the air sealing qualities. It provides a nice tight seal, which virtually eliminates outside unfiltered air from getting in your home. Let us give you fresh, pure air!

  • power-plug
    Lower energy bills

    Spray foam can lower energy bills substantially. The U.S. Department of Energy estimates that 56% of the energy used in a home goes to heating and cooling. Let us give you reduced monthly costs!

  • humidity
    Controlled humidity

    By sealing your home with high quality spray foam insulation, you can control the movement of air and achieve your desired level of humidity. Let us give you comfort!

  • carbon-footprint
    Reduced carbon footprint

    By reducing energy waste, you're helping the environment. Let us help you do your part for a brighter tomorrow!

  • cost
    Pays for itself over time

    By saving on your electricity bill each month, your insulation upgrade will pay for itself over time and you’ll save money for years to come . Let us give you a return on your investment!


We work with homeowners and contractors to install spray foam insulation in homes, commercial and industrial applications!



  • Garage
  • Attic
  • Basement
  • Walls
  • Mobile Homes
  • Metal Buildings
  • Sheds
  • New Additions


  • Warehouses
  • Distribution Centers
  • Bulk Storage Container
  • Around Duct Work


  • Apartments
  • Retail Spaces
  • Storage Units
  • Fitness Facities
  • Education Centers
  • Medical Facilities

Why Choose Koala?

  • Prompt

    We get there on time, every time.

  • Clean

    No mess left behind! We clean up after ourselves.

  • Experienced

    We have 15+ years of experience in construction and home services.

  • Knowledgeable

    We’ll help you choose the right insulation for your project.

  • warrantyr St. Louis
  • St. Louis
  • St. Louis
  • St. Louis
  • St. Louis
  • St. Louis
  • St. Louis
  • St. Louis
  • St. Louis
  • St. Louis
  • St. Louis
  • St. Louis
  • St. Louis

See what our satisfied customers have to say about our spray foam service!

Bruce was very professional and knowledgeable. Answered all my questions. Josh was on time and did a good job spray foaming my garage attic. Reasonable priced. Would hire Koala again.

Melanie M.

Ray and his team were excellent, responsive and a great value. They took their time, and the spray foam insulation looks great in our cathedral ceiling. I can't recommend them enough and will use them again on the second half of our remodel.

Jacob N.

Better than excepted. Great job and they cleaned everything up. Plus, the new spray foam insulation is working great. Much Cooler and much quieter. The cost was reasonable. Great value for what they did.

Greg H.

Ready to book your free insulation evaluation?

We have 3 convienant ways for you to get in touch


There are two types of spray foam insulation: Open Cell and Closed Cell. Both materials are great insulators and air barriers, and offer many benefits to make your Festus area home more energy- efficient. To determine which material is best for your project will require an evaluation by one of our highly qualified energy consultants.


If you live in St. Louis where there are extreme seasonal temperature changes or you live in a flood prone area, closed cell is often a better choice. Closed cell spray foam acts as a vapor barrier, keeping water and moisture out of your home and the foam itself is water resistant. Open cell is a great option if you live in a milder climate, as it is moisture permeable and help provides an optimal barrier. Often, regardless of where you live, you may choose to use both types of spray foam on a single project. Your Koala Insulation professional can help you decide which type of spray foam is best for you and your project!

When it comes to insulating your home, R-value matters.


YES. Koala insulation of St. Louis experts are trained in installing spray foam and take all precautions and follow strict guidelines during the application process. Once the material has been allowed to cure properly, there will be no harmful chemicals left behind. Fun fact - Koala Insulation of St. Louis holds a certification from the American Chemistry Council for spray foam safety as well as appropriate insurance and licensure.

Spray foam should only be installed by a professional that has the proper training. The Koala Insulation spray foam material is mixed on-site in our fully self-contained rig and is sent through a hose into the stud cavity, where it hardens and creates a long-term barrier to guard against dust, noise, moisture and even rodent infestations.

Greater “racking” strength

Spray polyurethane foam has a higher racking strength, which adds structural strength and enhances overall building stability. In fact, spray foam is the only insulation material that adds structure integrity. It adheres to the cavities of the walls and in between ceiling joists making them more rigid to protect against cracking, shifting, or shaking during extreme weather conditions. NAHB Research demonstrated SPF filled walls could add from 75% to 200% racking strength to walls of OSB, plywood, light gauge metal, vinyl siding, or gypsum board.

Highly resistant during severe weather events

Not only does closed spray foam withstand the effects of high winds, but it also performs well under wet conditions. The material is water resistant, has minimal water absorption, and is classified as an acceptable flood resistant material. FEMA has published a rating system ranking building products from 1 to 5(not acceptable to highly acceptable). SPF carries a “5” rating for its outstanding water-resistant qualities.

Prevents bugs and rodents

Spray foam is effective at filling tiny cracks and gaps within walls and attic rafters. Rodents and insects such as rats, mice, cockroaches and other insects can enter through the tiniest of holes, leaving behind waste or destroying your attic storage. Koala spray foam insulation creates a durable barrier that seals all unseen entry points, making it an optimal insect and pest resistant option.

With the increasing demand for comfort and energy efficiency, spray foam is the optimal choice for your insulation needs. It can actually strengthen walls and has low vapor permeance (moisture transmission) and is ideal in rooms where sound-reduction is desired such as in home theaters or, for a light sleeper, bedrooms.

Koala technicians are trained in handling the spray foam components and in completing the installation safely.  We guarantee we will prepare the job site to meet all safety standards!

Need Project Financing

Pay for your project with predictable, monthly payments without tapping into your home equity.

  • Get Pre-Approved in under 2 minutes
  • 12 Month - No Interest, No Payment Options
  • Fixed monthly payments
  • No prepayment penalties
Get Pre-Approved

Read More of Our Reviews

They did an amazing job!

They did an amazing job! Super fast and very professional. Cleaned up afterwards. I had my attic space insulated and a solar fan installed.

High Ridge, MO

We noticed a difference immediately

The folks from Koala did a great job! After looking at the insulation in our attic and seeing some low (and even bare) spots, we had Koala come out and give us an estimate. They took a look and gave us a number of options and explained each one thoroughly. We scheduled them to come back out and they got everything wrapped ** in a few hours. Showed us pictures of the less accessible areas of the attic and then I climbed up and took a look around the access hatch. Looks great and we noticed a difference immediately since it got near triple digits outside that afternoon. From estimate to installation we were completely satisfied with the entire process!

Chesterfield, MO

Quality work

Quality work done quickly and professionally. Appreciated that they showed up on time and and answered all my questions.

Herculaneum, MO


Great group of guys with a install guy like no other. Highly recommended! Glad I read there reviews before making my decision. A+

Pacific, MO

Honest, straightforward, fair and responsive

Honest, straightforward, fair and responsive. Heard about them from a neighbor who was also extremely happy with their services. Would highly recommend.

South City, St. Louis


I would like to thank the Koala Team for coming into my home insulating and making my house feel so much better. I couldn't have done it without you guys thanks you again - YOU ROCK


Very upfront and explained everything in detail.

Very pleased with services from everyone. They did a great job and definitely will recommend them to all my friends. Very upfront and explained everything in detail.

St. Louis

They gave me options with pricing the same day

Koala was very prompt and knowledgeable. I did not feel pressured into anything I did not want. They gave me options with pricing the same day. Scheduling was easy and they were able to come back the next day for the job. They did an excellent job cleaning up. I felt so sorry for the workers because there was heat warnings and they did the job quickly, efficiently, and did not complain. I would highly recommend this company!

South Hampton

Overall a terrific experience!

Everyone I dealt with at Koala was professional and courteous. They responded to questions quickly and arrived promptly for all appointments. My job was done correctly and quickly. Overall a terrific experience!

St. Louis

We can already feel a difference

Were very pleased with the work done by Koala. A few days ago we had fiberglass insulation blown into our attic, adding to the existing insulation to increase the * factor. We can already feel a difference. The staff was very professional from start to finish. The ******* who did the actual work were very polite and hard working and cleaned up after themselves.


They went above and beyond

I am beyond impressed with my experience with Koala. They went above and beyond. I never felt like I was pressured and they were straightforward with the work being done and the expectation. We had a complicated case and I can honestly say they really went out of their way to create a solution. They worked with our budget and made sure we were fully informed. The solution was exactly what we needed and our insulation had made such a difference. I highly recommend anyone looking for insulation work to reach out to Koala. 10/10!!


Best experience working with contractors we’ve had in years

Koala removed our old insulation in the attic and installed new blown in insulation. They did an amazing job. The process was seamless and the entire team was professional, diligent, and communicated with us throughout the process. They started the job on time and finished early! By far the best experience working with contractors we’ve had in years. Highly recommend!!


We definitely recommend Koala

Koala provided very timely and professional service. All of the employees from the service side to the installation were courteous, kind, and helpful and did a great job communicating about the product without trying to upsell. People showed up on time for both the initial estimate and the installation, and the work of cleaning out existing insulation in the attic and putting in the new insulation was completed ahead of schedule. Absolutely no headaches or annoyances at any step. We definitely recommend Koala.

Saint Louis, MO

We selected the best with Koala

They were timely, efficient, organized, thorough and professional. We reviewed several other insulation companies and are now convinced we selected the best with Koala.



This business was punctual and professional during the whole process!

South County, St. Louis

I could tell a difference immediately

Nick (came to give me an estimate)and Josh and John (installers) we’re all very professional and knowledgeable. I could tell a difference immediately from the 100*+ heat we’ve been having. The job was completed quickly and there was NO mess left behind. I highly recommend everyone to get their house insulation looked at by Koala Insulation.

Tower Grove, St. Louis, MO

They have a great communication system that keeps you in the loop

Koala installation was very professional they have a great communication system that keeps you in the loop as the job progresses. Installers Josh and John were very friendly and professional. I would recommend using their service.

Fenton, MO

Very satisfied!!!!

These guys are fantastic! I had them blow in insulation in my attic. Super professional, very knowledgeable, great service, very friendly, they made sure to clean up after they were done, they showed me pictures of the completed job, pricing was great. I will definitely be using Koala again for the remainder of my remodeling! Don't hesitate to use this company. Very satisfied!!!!

Jefferson County, MO

Top notch service from this company!

Just had these guys out to insulate my remodeled kitchen attic. I'm very thankful I used koala. They were very professional, very knowledgeable, very friendly, great pricing, didn't leave a mess, and I will 100% be using them again! Don't hesitate to use these guys for your house. Top notch service from this company!

Banhart, MO

I'd definitely recommend them

The guys I worked with at Koala were friendly, professional and did an excellent job. Communications were clear and streamlined. Price and turnaround time were fair. I'd definitely recommend them to anyone in need of insulation!

St. Louis

Quality work for a reasonable price

Was fast and efficient and did quality work for a reasonable price.

Florissant, MO

Great bunch of guys!

Great bunch of guys! Very professional men that did the work. Did not give us a "snow job" and try to talk us into more than what we wanted done.

University City

They take pride in their work

Highly recommend Koala Insulation. Their prices are very competitive and their work is excellent. They blew 17 inches of insulation in my attic and installed a solar attic fan. They take pride in their work and cleaning up when done. Good people.

Granite City, IL

Our AC runs far less now

They did a great job adding much needed insulation to our attic. It has made a HUGE difference. Our AC runs far less now. The installers were extremely friendly and genuine dog lovers so an added bonus.

Arnold, MO


Awesome, what they promised. Very polite

Sunset Hills

I highly recommend this company as a whole.

Josh and Matthew were quick, thorough with the insulation, and great to work with. I highly recommend this company as a whole.

Cahokia, IL

You can tell they work together to ensure customer satisfaction

They provided me detailed understanding of what was required to bring my insulation up to code and other issues in my attic that needed attention. They gave me options. They arrived on time and ready to work. The customer service was friendly and excellent. Once it was completed, they talked me through the process and provided pictures. You can tell they are a team that works together to ensure customer satisfaction.

North County, St. Louis

I'm impressed with the work

Good job. Good company and very professional work. Had insulation work done for attic and basement and I'm impressed with the work thus far. Solar attic fan doing its job. Thank you

Columbia, IL

Prices were reasonable

Had insulation work done for attic and basement and I'm pleased with results. Prices were reasonable. The crew was professional.

Belleville, IL


The guys who installed the insulation were very professional and did a good job.

Central West End

The workmen were excellent

The workmen were excellent, thorough, neat and friendly.

Saint Louis, MO

Excellent job

Excellent job installing insulation in the basement crawl space. Thanks!

Clayton, MO

100% would recommend Koala Insulation.

100% would recommend Koala Insulation. Jon and Josh were very professional and friendly. They explained everything they were doing and took before and after pictures. They cleaned after themselves which is a big plus for me. Such a great experience. Thank you!

University City

Great job, on time, courteous.

Removed mold insulation, took away all the old insulation and plastic lining, the basement was cleaner - great job, on time, courteous. Thank you

Maryland Heights, MO

Provided before and after pictures

Very thorough and professional. Explained everything in detail that they found and would do. Provided before and after pictures so I did not have to climb up in the attic. I had an idea of my problems and their investigation proved correct. They were careful to protect my home and property and also cleaned up so you couldn't tell any one had been here. They were on time and notified me when on their way. I Highly recommend Koala insulation.

Ballwin, MO

They were awesome!

They were awesome! They were very quick and very professional.

Hillsboro, MO

The guys were caring and friendly and did an amazing job!

The guys were caring and friendly and did an amazing job! Highly recommend!!

St. Louis, MO

Very pleasant having Koala Insulation to do the job

I got my attic insulated today. The crew was very professionals, friendly and polite. After the job done, Joshua showed me the pictures of what they have done on my attic. They covered the floor before putting equipment on and removed all mess. Very pleasant having Koala Insulation to do the job. Definitely recommend this company for friends and relatives.

Granite City, IL

The whole process was very organized

Extremely professional and did a great overall job on the house attic and basement insulation needs. I had them do the blow-in insulation in the attic and spray foam in the basement. The whole process was very organized right from the original requirements to estimate to finished product. The guys arrived on time and were spot on with the overall needs of the project and did a fantastic job.

Creve Coeur, MO

Will definitely use them again

Called on Tuesday to get an estimate for spray foam insulation and was able to have it done by Friday. Everyone was nice and professional. Will definitely use them again for any insulation needs in the future.


We are very pleased!

The team did a great job. They were quick and efficient. We are very pleased!

Affton. MO

Great place! Fair prices! Lovely people!

Great place! Fair prices! Lovely people! Used them twice so far for home insulation. Great job! Easy to deal with. Perfect service. Can do attitude! We will use them again for insulation install. Highly recommend Koala! Great to save you green from your utility bills too!

Arnold, MO

They even vacuumed everything

Koala insulation was great. They did a great job adding insulation and placing a solar vent on our roof. They even vacuumed everything on their way out the door.

Mehlville, MO

I had an excellent experience

I had an excellent experience with the guys from Koala Insulation. I had them insulate my attic and crawl space as well as do a few installations. Everything looks great and feels great and I would definitely recommend them.

St. George, St. Louis

Would recommend Koala to everyone!

Would recommend Koala to everyone! Quick, clean, friendly and reasonably priced!

South County, St. Louis

Very professional and efficient

We had blown-in insulation, insulated vents installed, pipes insulate wrapped and a solar fan installed. The guys that came out were very professional and efficient. We had a few questions after they left and they answered everything quickly. We would highly recommend them for anyone who is looking to add energy efficiency or solve condensation issues in their home!

South St. Louis County, MO

Creative problem solvers and honest

They were creative problem solvers and honest about what could and could not be done. Thank you!

St. Louis, MO

Great price even better service.

Had insulation blown into attic. Great price even better service. We will be recommending to others.

Barnhart, MO

Honesty, creative solutions

Thank you so much for your honesty, creative solutions & quick work!

Tower Grove, St. Louis, MO

Kind and professional

Joshua and Dave were awesome they put installation in our attic that was difficult to do they was kind and professional

Hyde Park, MO

Super great

Super great. And they cleaned up after themselves before they left!

Jefferson County, MO

I'd definitely recommend them

The guys I worked with at Koala are friendly, professional and did an excellent job. Communications were clear and streamlined. Price and turnaround time were fair. I'd definitely recommend them to anyone in need of insulation!

St. Louis, MO

I chose Koala

I had several bids, didn't take the highest, or the lowest. I chose Koala Insulation.

St. Louis

Couldn’t be happier

Couldn’t be happier - beginning to end the Koala team was professional, on time, and did an amazing job!

Sappington, MO

Customer focused

Koala did a great job on insulating my attic and foam insulation under a sunroom. Very professional and customer focused thru the whole process. I highly recommend Koala Insulation

St. Louis City, MO

Prompt and professional

They were prompt and professional. Very pleasant people to work with.

Pacific, MO

Awesome job, very professional.

I had blown in insulation in the attic and spray foam on my rim joists. They did an awesome job, very professional. They answered all my questions which were a lot and also did a good clean up afterwards. I highly recommend this company.

Jefferson County, MO

I loved that they took pictures of the work

Insulation was installed very professionally I loved that they took pictures of the work that they performed The installers were very nice and informative I would definitely recommend Koala to everyone This was the most professional job I have ever had. Great Job.

South County, St. Louis

Very knowledgeable

I would highly recommend this company did a great job very knowledgeable and explained everything And did an excellent job cleaning everything up when they were done

Arnold, MO

Did a great Job

They were on time, were professional, and did a great job.

St. Louis

Honest and didn't try to oversell

They were very easy to work with. Arrived on time for appointments, quick and easy to schedule. The salesperson was honest and didn't try to oversell. The installer was prompt and very efficient, in and out in under 90 minutes for a rim joist insulation in the crawlspace. I would definitely recommend them to anyone and will use again if needed.

Florissant, MO

Very professional and no pressure

Koala's team did a great job installing insulation in the attic, very professional and no pressure.

Pacific, MO

I would recommend!

Hired to install insulation in the attic. Provided good ideas to improve our energy efficiency and were able to schedule quickly. Good communication including text alerts when scheduled and when technicians were en route. Friendly and responsive staff. I would recommend!

Bevo Mills, St. Louis, MO

Very friendly

Showed up on time, cleaned up afterwards. Very friendly and price was as quoted.

Lemay, MO

Professional and courteous

Hired Koala to install blow-in attic insulation. All interactions, from estimate to work completion, were done in a professional and courteous manner. They were on time, efficient, and cleaned up (there was minimal mess). All of my questions were answered and the process explained to me. Took under two hours to complete.

Imperial, MO

I'd definitely recommend them to anyone

I contacted Koala to help me insulate my kitchen. They were extremely thorough in their initial (free) investigation and were very helpful in breaking down various options for me. When service was performed, they made sure that I knew what was going on (and why) and made sure that any questions I had were answered. I'd definitely recommend them to anyone.

Clayton. MO

They did a great job

They did a great job of adding blown insulation in my attic for a reasonable price!

Glen Carbon, IL

Would recommend them to anyone.

They did a great job. On time and very professional. Would recommend them to anyone.

Festus, MO

A diamond in the rough

Highly professional and personable. Arrived on time, showed me the problem areas and recommended solutions. They were able to get the installation scheduled in 2 weeks. The installers came on time, completed the installation, walked me through the job and verified it with photos. I cannot recommend them enough. In today's day in age when it seems like everyone cuts corners and can't communicate clearly with clients, Koala is a diamond in the rough."

St. Louis County

Very well explained

Very well explained beforehand with an exceptional cleanup afterward.

St. Louis Hills

I would use them again.

Arrived on time, did the work without a problem,. Workers were polite, well mannered, took pics of attic when they were done. I would use them again.

Festus, MO


Courteous, neat with the cleanup, on time.

Creve Coeur, MO


They were amazing, great job, great price.

Festus, MO

Very very good job.

The two gentlemen came out got started right away explained everything on what was going to be done did an excellent job very little mess everything was cleaned up and put back just the way it was like they were never here I recommend them five out of five stars quality work quality materials very very good job.

South St. Louis City

Great employees all around

Arrived early, completed work quickly and were quiet, barely knew they were here. Great employees all around from sales to installation and not over priced. Would highly recommend

Mehlville, MO

Excellent customer service!

I could not be more pleased with all aspects of Koala and the customer service and workmanship that they provided. Simply just wonderful guys. Now that's excellent customer service!

Oakville, MO

Tremendous job

Koala Insulation installed about 16 inches of insulation in my attic and a new solar fan. They did a tremendous job, and the whole process was smooth. I would highly recommend them to anyone. I appreciate all they did for my house and family.


Super friendly and did high quality work

I had a great experience with Koala Insulation and would definitely recommend them to anybody in the market! Everybody I dealt with was super friendly/nice and did high quality work at an affordable price. Thanks again!

St. Louis

Professional and cleaned up

Koala came out and gave me a quote just a couple of days after I called them . I never felt pressured to get more than I needed and the rep was professional. I called back a couple of days later to set up insulation and got scheduled right away . When the guys came out to blow on the insulation they came early which for me was perfect . They got the job done pretty quickly , we’re professional and cleaned up after they were done .

Imperial, MO

Great guys

Blown in insulation great guys. I recommend this company.

St. Louis

Would certainly recommend!

Had attic insulation blown in from koala. The two guys that came out we’re very friendly and professional. Did a great job and cleaned up afterward. Would certainly recommend!

St. Louis

Very courteous

Very courteous. Bent over backwards to calm my wife's fears.

University City

Listened to what I was looking for

My experience was great, they communicated very good and listened to what I was looking for. The team arrived on time to start the job. I expressed my concerns about the install (keeping my soffit clear). The install team did a great job adding the new insulation to my attic as well as being mindful of my concerns. They had me review each area to ensure I was satisfied. They also took care to leave my house just as clean as it was when they arrived."

Festus, MO

I will be using them again

Nothing but great things to say about this company. Gary got me squared away with a realistic quote that was affordable and unique to my home. Josh and his crew came to blow in the insulation in a timely fashion and did a fantastic job. They cleaned up after and explained everything thoroughly. I will be using them again when I decide to get an attic fan!

Pevely, MO

Professional and friendly!

Great awesome installation! Professional and friendly! Estimate was spot on and informative! Install guys were the best!

Crystal City, MO

We experienced an immediate difference in the home.

Great communication throughout the project. They were able to get to our project within a couple of weeks. They kept us informed the day of the project with before and after pictures. We experienced an immediate difference in the home. The team was great and we would recommend them to anyone seeking insulation.

Affton, MO

Answered our questions

We had insulation installed by John and Josh. They were very professional, knowledgeable, and personable. They answered our questions and educated us on the insulation option we opted for. I highly recommend Koala. Thanks again, John and Josh!

St. Louis

Cleaned up after themselves

Koala installed 2 attic ventilation fans and added insulation in the attic. Koala explained all of the planned work along with the benefits including saving on heating and cooling expenses. Onsite, the installers worked with us to minimize the disruption of our home and activities. They were professional, courteous and cleaned up after themselves.

O'Fallon, IL

Beyond my expectation

They went over and beyond my expectation great job

Florissant, MO

Great Guys, great experience

They were great - prompt and polite. They explained everything they were going to do and why, what the advantages will be. When the insulation was blown in to the attic and the fan installed they showed me pictures of the installation and had me take a look at the attic . Great Guys, great experience. In 25 mins started getting chilly in the house, I had to turn the air conditioner up, it was already working!!!"

Washington, MO

Just the best

Professional, quality work, efficient and customer friendly. Just the best.

Saint Louis, MO

I would hire them again

Guys were professional from set up to clean up. I would hire them again.

High Ridge, MO

Very customer friendly.

Josh and John did a great job explaining what they were doing installing insulation and a solar exhaust fan. They were very customer friendly. They exceeded our date if installation. They completed the job in a professional manner.

Affton, MO

Easy to work with

Koala was easy to work with. Very professional, and quick.

Lemay, MO

They are honest people

They are honest people. The guys Install the insulation we’re very nice and they explained everything and they cleaned up afterwards.

Oakville, MO

Earned my trust

Truly lives up to their 5 star rating. They were hungry for my business... professional and courteous at every step from estimate to installation. I don't typically give out 5 stars but they earned it, more importantly, they earned my trust.

Saint Louis, MO

Excellent services from start to finish

This company has excellent services from start to finish. Gary answered all our questions during our initial appointment for our bid. And I can’t say enough about the two guys that came to do the insulation. Very courteous and conscientious about their work. Cleaned up everything when they were done. If I could give them more than 5 stars, I would!

Saint Louis, MO

I highly recommend this company. Friendly team!!!

The project started 4 days after they gave us a quote, and the price was below asking from the other companies. The crew called 15min when they were en route. They finished within the time they mentioned, I highly recommend this company. Friendly team!!!

Central West End

They will hear you out and make sure they get it right

The crew showed up on time, worked well, and cleaned up nicely. They went above and beyond on cleaning up. If things come up with this company, they will hear you out and make sure they get it right. Very professional. I waited two weeks to write a review and can honestly say I feel a major difference in comfort and humidity levels in my house. Can't wait to get my next electric bill to see how much it has gone down since my AC isn't running all the time."


Very responsive and courteous staff.

From quote to finish, very responsive and courteous staff. Installers took pictures and showed me the progress at each step. They made sure to clean up everything after they were finished. Very pleased with their work.

Lemay, MO

Very kind

Great, effective work and very kind.

Saint Louis

Hire koala for your next insulation job!

Hire koala for your next insulation job! They were responsive, professional, and efficient. I had blow in insulation added to my 1,000 sqft attic space, process took about 90 minutes and my house already feels cooler! Will recommend Koala to all my friends and family - give these guys a shot!

Clayton, MO

Koala insulation were incredible.

Koala insulation were incredible. From the estimator to the installers, they were polite, professional and efficient. Within hours of them installing the insulation and the solar powered attic fan our second floor was 10 degrees cooler. No more high energy bills and unliveable conditions on our second floor. Thanks to Koala we can enjoy the whole house no matter how hot it gets outside.

South Hampton

The entire process was seamless

The entire process from consultation to bid to actually installing the insulation was seamless. Koala has a great team. They kept us informed of our options and made their best recommendations for what we needed. I would definitely use them again for other properties if I needed to.

Benton Park

Thanks to Koala Insulation we can actually use our second floor!

Every part of the process was smooth and professional. Arrived on time, immediately identifying our problem and laying out all options. Jon provided an estimate and explained the tax credits. Nick's team showed up promptly; they were clean, courteous and efficient. The price was reasonable, and the results were immediate. Our second floor went from 85 in 95 degree weather, to a cool 72 in the same heat.""

Saint Louis Hills

Great crew. On time.

Great crew. On time. Updated insulation and installed fans in attic. Highly recommended.

Oakville, MO

Very happy with results!

5 star Very happy with results!

Pacific, MO

Very knowledgeable & professional

Gary was very knowledgeable & professional. We would highly recommend them.

High Ridge, MO

Extremely professional

Koala insulation was a great company to work with. They were extremely professional, efficient with their job and very thorough.

Lindenwood Park, St. Louis City

Good job!

Had old blown insulation removed from my attic. They were on time, price was reasonable and they did a good job.

South County, St. Louis

Pricing was perfect

The pricing was perfect and they sit down with you and explain what the best options for your budget are. The crew that showed up were very courteous and professional, they came in got set up and were done within about 3 hours.

Arnold, mo

HIGHLY recommend them

They were incredibly detail oriented and went above and beyond and repaired multiple air vents that were previously damaged. After the install, they went through my entire house to vacuum to make sure it was spotless by the time they left. I HIGHLY recommend them. They were on time, efficient, and did a great job. Cannot say enough good things about my experience.

University City

Polite, friendly & respectful

Nick & the other two installers were very polite, friendly & respectful. Nick even took a picture of our new attic exhaust fan so we could see the work they did. My new exhaust fan is whisper quiet too.

Saint Louis, MO


The men were professional. They did a great job, and showed me before and after pictures. They protected my hardwood floors and vacuumed and insulation that was dropped on my driveway. They did a great job.

Pacific, MO


The whole Koala team is awesome to work with!

Dupo, IL

Very knowledgeable

Gary was very knowledgeable and informative about the service they provided and gave different options to compare cost. Gary was able to schedule the job within a weeks time. Nick and his crew came out and where very professional laying out pads on the floors to not damage the floors. They cleaned up after and made sure that everything was to my satisfaction.

South City, St. Louis

Price was excellent

Showed up on time, professional, price was as quoted. Thought price was excellent. Work was done quickly. Very satisfied.

South City, St. Louis

Friendly, professional service

Team showed up on time, put drop cloths down, got right to work. They did a fantastic job. Cleaned up when done. Friendly, professional service. Would highly recommend.

Carondelet, St. Louis

My Upstairs is Cool Again!!!

My Upstairs is Cool Again!!! The Koala Crew is very professional. They bring in their on blankets/carpets to place on your floors & steps so the don't dirty your house. The process of installing more installation went much faster than I thought it would. They cleaned up after themselves. Then within a few hours after they left with the help of my AC, the upstairs no longer felt humid. It was awesome. I knew we made the right decision to go with Koala.

Princeton Heights, Saint Louis

Cleaned Up After Themselves

The project went as planned. Nick and his crew finished the job within the time frame provided. Cleaned up after themselves not leaving any insulation on the floor or anywhere. They made sure to check that everything was to satisfaction.

St. Louis Hills


Excellent, through, very professional

Creve Coeur

Very quick to respond

Very quick to respond to our request for an estimate! Gary was very professional and polite. He took his time to walk through the process and throughly answers the questions we had. Looking forward to setting up an appointment!


You are in good hands

You are in good hands if you choose to work with Jessi and Mike and their team at Koala Insulation. I have known them for years and know that they are people who stand by their word. They both are very driven individuals that will stop at nothing to ensure the job is done right. I will be recommending them to anyone I know who needs insulation.

St. Louis

Positively the GREATEST

Our Sales Manager was excellent and was fully attuned to our insulation needs. He responded quickly with a quote and got our job scheduled for the very next week. Our insulation installers were positively the GREATEST! Their professionalism, product knowledge, and genuine kindness made the job SUPER! Koala gets an A++++ for this job. We highly recommend Koala Insulation of St. Louis for all your insulation needs!

South Hampton

Responsive, Professional and Quick

My husband called Koala Insulation to get a quote on updating our attic insulation. The team was responsive, professional and quick! They came out within the week with a very reasonable price. We used their services and can't wait for the savings in our home energy bill! Great job, thank you!

Cedar Hill

We Provide Insulation Services to the Following St. Louis Areas

St. Louis, Arnold, Barnhart, Cedar Hill, Crystal City, Eureka, Festus, Herculaneum, High Ridge, Hillsboro, House Springs, Imperial, Oakville, Pacific, Pevely, Saint Albans, Augusta, Defiance, Florissant, Maryland Heights, Saint Ann, Berkeley, Olivette, University City, and more

Counties Served

St. Louis County, St. Louis City, Jefferson County, Franklin County, Saint Charles County

Zip Code

63109, 63111, 63116, 63123, 63125, 63129, 63031, 63033, 63034, 63043, 63074, 63134, 63135, 63140, 63145, 63146, 63010, 63012, 63016, 63019, 63025, 63028, 63048, 63049, 63050, 63051, 63052, 63055, 63069, 63070, 63073, 63332, 63341, 63102, 63103, 63104, 63105, 63108, 63110, 63112, 63114, 63118, 63130, 63132, 63133, 63139

We Look Forward To Hearing From You

We make the insulation process simple & easy.