Give your home controlled air flow movement with an air sealing upgrade and experience savings, good health, and home value!

Are you experiencing uncomfortable room temperatures, rising heating and cooling costs, or drafty areas? Air sealing is essential to having an energy efficient and comfortable home.

The experts from Koala Insulation of Gateway West - St Louis will inspect your attic for gaps or holes left by electricians, builders or spaces cause by damage, and provide you with a complete air sealing service. Average homes have gaps or spaces that allow air to escape having a huge impact on your Saint Charles home’s energy efficiency.

Once the gaps have been identified, our local experienced technicians will seal hidden air leaks, stopping unwanted air movement, moisture build up and increasing your home’s overall comfort.

Air sealing combined with the correct insulation is the most impactful thing that you can do to improve energy efficiency and home comfort.

sealing2 air

Ready to stop those drafts and reduce your budget breaking energy bills?

Comfortable-person sealing

We’ll make your space comfortable

  • air-filter sealing
    Stop Air Leaks & have cleaner air

    Removing your current insulation and replacing with new fresh insulation will give you cleaner air in your home. Let us give you fresh, pure air!

  • power-plug sealing
    Lower energy bills

    According to the department of energy, by air sealing uncontrolled air leaks, you can save 10-20% on your heating and colling bills. Let us give you reduced monthly costs!

  • carbon-footprint sealing
    Reduced carbon footprint

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

  • cost sealing
    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!

Common Air Sealing Applications

Residential2 sealing

Residential

  • Attic
  • Exposed plumbing pipes
  • Garage
  • HVAC ductwork and vents
  • Attic Access doors and hatches
  • Recessed lights and ceiling fans
  • Electrical boxes and wiring entry points
  • Basement
  • Recessed can lights

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 Gateway West - St Louis

See what our satisfied customers have to say about our air sealing & insulation service!

Just had David and his team do blown-in in our house and the service and install was the best. They were neat clean and right away notice a huge difference in our electric bill along with overhead noise from outside from airplanes....so happy with this investment to our home!

Lisa L.
Saint Charles

The Koala crew did a great job. The insulation job was promptly scheduled and reasonably priced. The additional insulation should reduce my electric bill. My house needed missing insulation to be reinstalled. Jeff, and the crew were professional and super nice to deal with. Thank you so very much.

Sarah J.
Saint Louis

Great experience! Connor showed up on time for our consultation and he was extremely personable and real knowledgeable about all of the different insulation solutions Koala has available. I thought I would drive him crazy with all my questions, but he was patient and was able to give answers that really made sense. I decided on the spray foam, and I could not be happier with the results. I feel like I live inside a giant Yeti cooler now! I expected the foam to make a difference, but I had no idea just how effective it could be. On top of controlling the temperature, the house is a lot quieter now, which I hadn't considered when I decided to go this route. Don't hesitate to have Connor and his team out to your place. My only regret is not making this decision sooner. Thanks so much guys!

Ryan C.
Chesterfield

Koala did two great jobs for us. Very professional, great communication and service.

Steve B.
Ballwin

Very pleased. Would recommend to anyone that needs a good company for blown in insulation. Very professional. Arrived on time. Cleaned up afterwards. Folks were courteous and answered all my questions.

Mary B.
Wildwood

The Team at Koala Insulation provided an amazing service and deal for my attic insulation job which added additional R19 to my existing attic insulation. The team was on time and got to work immediately.

Tom M.
Saint Charles

Ready to book your free insulation evaluation?

We have 3 convienant ways for you to get in touch

LEARN ABOUT air sealing!

One of the best ways to get the biggest return on your air sealing investment is to combine it with an insulation upgrade! Learn more about types of insulation that we use in our videos below!

Why air sealing is important

Insulation alone is not going to be as effective as with combining it with air sealing. To deliver the optimal improved energy efficiency, air sealing will act as a vapor barrier and stop any air from penetrating into your home.

By sealing all gaps and holes, it creates an air barrier, blocking air from passing through walls and the ceiling into the attic or outside air in filtrating into your home.

A properly sealed home will not only stop air leakage but will also keep water out, keeping your insulation in top condition. It also contributes to increased comfort, improved indoor quality, lower utility bills and controls moisture.

Koala insulation experts offer custom solutions to provide you with the right solutions for your specific needs. We offer air sealing services along with batt, spray foam and blown-in insulation products to guard against heat loss and moisture related problems.

CELLULOSE

Cellulose consists of fibers made from recycled newspaper, cardboard, or wood and is made with or without binders. Cellulose is a very common type of blown-in insulation as it is made from recycled materials and is chemically treated to resist pests, mold, and fire. Boric acid is the primary chemical used to treat Cellulose insulation and is found naturally in seawater, fruits, and plants.

FIBERGLASS

Fiberglass is made from plastic, glass, and other raw materials that are melted and spun into fibers that resemble the texture of wool. Fiberglass insulation has moisture and fire-resistant properties. Because fiberglass is made from sand and glass, it is naturally non-combustible. Fiberglass has significant recycled content with some loose-fill products containing up to 80% recycled glass.

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Read More of Our Reviews

Koala Insulation Exceeded our Expectations

We became acquainted with Koala Insulation through Jennifer at the 2022 St. Charles Home Show last April. From the initial attic inspection to the day of installation, Jennifer was accessible, professional and very knowledgeable, answering all our questions.

Koala installed a solar attic fan and added blown-in insulation.

Mark, Cory and his crew and Jennifer arrived on time, worked efficiently and, the work area was cleaned up at the end of the project.

With hot weather upon us this early in the year, we’re enjoying a cooler attic which will save us money on our A/C bills. And the added insulation should reduce our heating bills, too.

I would recommend Koala to anyone wanting to lower their energy consumption and their bills; they have several options available.

O'Fallon, MO

These Guys Rock!

These guys ROCK! Not only was the estimate for adding insulation to my 58 year old house much lower than I had anticipated, they came out when the temperature broke a record for this day in May (93 degrees) and did an amazing job! Matt paid painstaking attention to the details that were vital (covering attic fan from inside, etc), and he and Corey (sp?) were professional, despite the heat."

St Charles, MO

Customer Review

Professional, friendly and courteous crew did a great job installing attic insulation. The process and experience were top notch from the free estimate to work completion.

Ballwin, MO

Customer Review

Absolutely impressed with the whole operation! From the estimate to the insulation install…all so friendly, professionalism, on time, and the insulation team did a FANTASTIC clean up job!! Highly recommend.

Newtown, St. Charles

Customer Review

Great crew did a great job, cleaned up everything when complete.

Wildwood, MO

Customer Review

Hired Koala to add insulation into our attic! Very pleased with the professionalism of the crew and reasonable pricing.

New Town, St Charles

Returning Customer

2nd time using them....and once again extremely pleased of the work they performed. Wish more contractors had their competence and professionalism. Give them 5 out of 5 no problem.

Webster Groves, MO

Customer Review

Excellent service. Blown in insulations for two rooms. A big shout out to Jo for arranging it all so quickly, and to Josh and his mate for showing up on time, working quickly and getting the job done and the great clean up afterwards. It was not an easy job but they were pros and got it done. I have hired a lot of people to work on my homes over the years. I want people who show up when they say they will, quote me a fair price and stick with the price, do the work contracted and clean up after themselves. These folks more than checked the boxes on all accounts. I would highly recommend them

Ballwin, MO

Customer Review

My house is newer, however had hardly any insulation in the garage. They did an awesome job from sealing where there was air leakage and canned light covers. The fiber glass blow in was quick and they cleaned up as if they were never there. I highly recommend this team and look forward to having them do my home attic very soon!

O'Fallon, MO

Customer Review

Excellent service from Koala. They were professional and made the process easy. Highly recommend this company.

Wildwood, MO

Customer Review

They arrived and completed the job early. Very friendly and professional and cleaned up after themselves. I would recommend this company to everyone!

St Louis, MO

Customer Review

Very responsive to questions. On time. Efficient

St. Louis

Client Review

Positive: Professionalism, Punctuality, Quality, Responsiveness, Value

Webster Groves, MO

Customer Review

WOW!!! From the free quote, to install, to clean up, these guys are FANTASTIC! In a world full of horror stories on getting work done on your house, these guys are a knight in shining armor. Customer service is very responsive in text, email and phone calls to set up appts etc. We had insulation installed in our finished garage, in the ceiling (there is a bedroom above the garage). I was worried it would be a terrible mess and that it wouldn't work as well as I wanted it to, to regulate temperature. The installers left my garage cleaner than when they came and more importantly that bedroom is now staying within 1-3 degrees of the thermostat (previously a 4-8 degree difference). Highly recommend."

St Charles, MO

Customer Review

They were very easy to work with they did an outstanding job on my attic and garage insulation I would use them again and would absolutely recommend it

St Peters, MO

Customer Review

We decided last minute to remove the insulation on our renovation project. Jennifer was absolutely wonderful! She worked it out so they could do the work before we pulled down the ceilings. The crew showed up on time, were very nice, did a great job removing the insulation, and the price was honored based on a sight unseen quote. We highly recommend Koala Insulation.

Wentzville, MO

Customer Review

We used Koala to replace old insulation in our attic recently. They did a fantastic job, were very professional, friendly and responsive. 100% satisfied and would highly recommend. They are also local and family owned, which I liked :)"

West County St Louis

Customer Review

Had spray foam done on my rim joists and sill plate. Service was quick and everyone involved was very polite. If I need any spray foam done on future projects, I am for sure going to call these guys.

Ballwin, MO

Customer Review

Koala Insulation is big on customer satisfaction and customer service. They did a great job, were competitively priced, and left the job site clean. This is a great business to work with, and I highly recommend them!

Newtown St Charles, MO

Customer Review

Very professional and hard working. Great customer service from beginning to end. They did an excellent job installing attic insulation. Highly recommend!

Ballwin, MO

Review by Orville

Project: Install or Upgrade Blown-In Insulation
Comments: It was smooth from the first contact (owners) the sales rep that gave a thorough description of material products to choose from (what was most suitable for our need and application options. We were impressed and confident enough to sign up for the job, without other quotes. A few days later, a father and son team showed up the job which was completed in about 2.5 hours, including clean up. We didn't bother with seeking other estimates and have no regrets. Orville

St Charles, MO

We Provide Insulation Services to the Following Gateway West - St Louis Areas

CHESTERFIELD, BALLWIN, WILDWOOD, VALLEY PARK, SAINT LOUIS, SAINT CHARLES, O FALLON, LAKE SAINT LOUIS, WENTZVILLE, HAZELWOOD, BRIDGETON, EARTH CITY, PORTAGE DES SIOUX, SAINT PETERS, FENTON

Counties Served

ST LOUIS, ST CHARLES

Zip Code

63005, 63011, 63017, 63021, 63038, 63040, 63088, 63131, 63141, 63304, 63366, 63367, 63368, 63385, 63042, 63044, 63045, 63301, 63303, 63373, 63376, 63026, 63117, 63119, 63122, 63124, 63126, 63127, 63128, 63143, 63144

We Look Forward To Hearing From You

We make the insulation process simple & easy.

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