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 Southeast Denver 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 Denver 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?

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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!

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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 Southeast Denver
  • Southeast Denver
  • Southeast Denver
  • Southeast Denver

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.
Denver

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.
Littleton

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.
Aurora

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

Steve B.
Englewood

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.
Lone Tree

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.
Denver
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We have 3 convienant ways for you to get in touch

(303) 843-8728
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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

Craw Space insulation vapor barrier

Repaired crawl space insulation

Englewood

Blown in attic fiberglass

The installers were fast and courteous.

Larkspur

Attic Top Off

Very happy their work. Courteous and respectful crew did a great job and cleaned up after the job. Highly recommended!

Denver

Attic Blown In Fiberglass

Koala Insulation of SE Denver added more insulation to my attic area to bring it up to R-60.
Both James and Colton were professional in their work. James showed me before and after pictures which I really appreciated.
I would definitely recommend them to neighbors and family.

Centennial

Spray foam and blown in fberglass in the attic

no comments made

Littleton

Communication

They were great to work with. Everyone we dealt with was friendly, respectful and knowledgeable. They even ensured to ask and double check to make sure we had everything in place to receive our GREAT services. Highly recommended.

Denver

Blown in Attic

Good communication. On time. Cleaned up after job was done

Centennial

Crawl Space Spray Foam

Great foam insulation service. They did a large (500sf) crawl space that was difficult to get to. Knocked it out in less than two hours, including laying poly and tightening everything up. Clean, efficient, and very courteous.

Littleton

Spray Foam Closed Cell

Great Workers

Castle Rock

Living Area Ceiling- Blown-In Insulation

We had attic insulation blown in. The height was more generous than we contracted for. The worker was very experienced, respectful, timely, and conscientious.

Centennial

Fiberglass Blown in Sound Proofing

Repeat customer. 5 star rating no comments

Lakewood

Overhang Spray Foam

We had Koala come and spray in insulation for us. The quote process, people and process were great!

Centennial

Spray Foam Garage

Spray foam insulation contractors. Did a great job. They showed up when scheduled, cleaned up after themselves when finished. Very professional and courteous field crew. Reasonably priced compared to similar contractors. If in need of this service, I definitely recommend them.

Littleton

Solar Power Attic Fan

I spoke to three companies. Jacob at Koala gave me the most informed recommendations for keeping my house cooler. I’m already saving money!!! The installers who blew in insulation were professional, friendly, and clean. My house was left immaculate. I also installed an attic venting fan. The installation process was perfect. Again it was professional and immaculate. I highly recommend this company.

Denver

Solar Fan

Awesome job! We had some insulation installed in our garage and a vent installed in the attic. The guys were clean, professional, and fast. The vent was added to improve the temperature of our upstairs bedrooms we noticed the difference immediately. Highly recommend!

Littleton

New Construction: Rim Joist - Batt Insulation,

Super flexible and accomadating and fantastic customer service!

Denver

Basement walls fiberglass batt insulation

Great job installing insulation in a basement finish. On time and great technicians.

Franktown

Crawl Space Walls

Koala Insulation was very reliable when I was looking to repair the insulation in home’s crawl space. I liked the text alerts and the pricing seemed decent for the work performed.

Denver

Drill and Fill

It was very hard to find a company in Denver that would do a smaller insulation job at a fair price. Koala insulation was wonderful to work with, fairly priced, on time, and responsive. I would recommend them to anyone and everyone!"

Denver

Free Estimate

They were honest about us actually not needing insulation which was both a huge relief and confirmation that this business is reputable and actually cares about their customers. Especially as I had two other bids who came afterwards and they tried to sell us over $1000 in insulation that was not needed. If and when we do need insulation, this company has earned our respect and would absolutely earn our business.

Aurora

Crawlspace Encapsulation

Crawlspace insulation and encapsulation work was completed. Crew was friendly, professional and did a great job. Will definitely be using them again on future projects.

Denver

Living Area Ceiling - Blown-In Insulation

It was a pleasure working with Koala for our attic insulation needs. Jacob and his team were punctual and professional every step of the process.

Littleton

Vaulted Ceiling - Spray Foam - Closed Cell 4"

This team did a fairly large job for spray foam insulation on my addition. They’re fantastic, I highly recommend their team. Very impressed with the level of professionalism.

Denver

Attic Blow In

Top quality work!! The guys were prompt, courteous & fast!! I had 12” blown in over 2 attics and I hardly knew they were here as i continued working in my home office. I’ve referred them to my sister, too.

Centennial

Spray Foam

Great company. Very professional. Came out and knocked out my 4 car garage in a single day with spray insulation. It's made all the difference

Denver

Blow in insulation

I just had Koala come and spray-in insulation in an upstairs bedroom and could not be more pleased with the whole process. Everything from the quote to the actual install was communicated to me in a timely and concise manner. No hidden fees or upsells, just exactly what I asked for. On the day of the install, the two techs were extremely professional and cognizant of the fact that my wife and I were working from home. After they completed their job, they left the room just as clean as before they started. On top of all this, they beat out several other insulation installers by quite a bit. I would definitely use again and recommend Koala!

Denver

Attic Fiberglass Blow in Addition

Great team and crew Really effective and a great value. I'd definitely recommend.

Denver

Living Area Ceiling & Garage ceiling - Blown-In Insulation - Fiberglas

Jacob was great to work with. He communicated well and stuck to his word throughout the entire project. He explained the process and their product. I was quoted a good price and he still made adjustments after they had completed the work due to unexpected work that did not need to get done in a specific section after all (Not their fault). He and his guys were on time the day of the job and got done on a timely manner while not rushing. Once done, they were really good about cleaning off and clearing the path to my furnace which is in the attic where the insulation took place. Any additional mess in the main living space was also cleaned up which I appreciated. I would recommend Koala if you're looking for a reliable company for a fair price.

Aurora

Living Area Ceiling - Blown-In Insulation - Fiberglass

Koala Insulation Of Denver was thorough in their evaluation and was able to access and address portions of my attic other companies did not. They were very easy to work with and their technicians were respectful, efficient and cleaned up after the job.

Denver

Ceiling Joist - Blown-In Insulation - Cellulose

Fantastic, small insulation repair, response was fast. Crew was professional and timely. Thank you so much for helping me on my problem!!

Denver

Attic blow in Fiberglass

Great job on blowing in our attic insulation. Older home needed upgrades to the insulation R-factor. Professional and knowledgeable. Called ahead and asked about showing up on an earlier date than we had scheduled. Nice! Impressed on the job quality. Highly recommend this company.

Englewood

Blow in Fiberglass Insulation

The guys did a great job. Very polite and easy to work with. Would recommend them any time

Lakewood

3/8/2021

I was very pleased with the work Koala Insulation performed at our home. Their price was reasonable, they were prompt and very friendly. I highly recommend them!

Denver

3/12/2021

The team arrived on time, reviewed the work plan and then walked the site with me making sure that we all understood the scope of work . Sean followed up after the job to make sure everything was to my standards. I would highly, highly recommend Koala Insulation of Southeast Denver.

Denver

3/24/2021

Presented a competitive cost for the insulation work to be done. Very thorough and professional; knowledgeable installer went out of his way to be sure I was satisfied with each phase - blown-in insulation in exterior walls which required accessing the walls from inside as we have a brick exterior, and blown in insulation in the attic. Cleaned up all the drywall dust and insulation; covered all the furniture, etc with plastic sheeting.Very pleased with the final result; house is definitely warmer without furnace running frequently.

Denver

3/31/2021

Jacob with Koala was prompt and efficient and did a good job cleaning up after they were done.

Denver

4/13/2021

Overall a great experience!

Denver

4/20/2021

Amazing company!

Denver

4/27/2021

I have know Sean and Courtney for many years. Their leadership, customer focus and accountability within the community is excellent.

Denver

4/27/2021

They offer a great product, I would highly recommend them!

Denver

4/28/2021

The team was a joy to work with. Sean always got right back to us when we had questions and walked us through everything every step of the way. The added insulation will help the house stay warmer in winter and cooler in summer, and it's already much quieter. We live next to a busy street, so that's very important to us.

Denver

6/24/2021

Fan Installation for $1k-2k

The team at Koala care about getting the job done right. I had some concerns about the initial install and they came back and fixed them in short order. Would hire again.

Denver

6/25/2021

Insulation Installation or Upgrade

Very easy to work with and flexible to meet our changing project schedule. Work was completed efficiently and done well. Knowledgeable and helpful.

Denver

8/18/2021

Fan Installation

A part of the fan that was initially installed was cracked. Jacob was very open with me about the issue and immediately ordered a replacement part. He then replaced the part after it arrived. Overall, I am pleased with the value of the fan and with Koala's installation.

Denver

8/18/2021

Insulation Installation or Upgrade

Showed up, did a great job and very patient with whatever questions I had

Denver

3/17/2021

Project: Install Spray Foam Insulation
Comments: There install team and customer service is fantastic.

Denver

5/12/2021

Project: Install Spray Foam Insulation
Comments: Jacob was great! Quick service and timely completion.

Denver

5/25/2021

Project: Install Spray Foam Insulation
Comments: They were professional, fast, and efficient. It looks so nice.

Aurora

7/18/2021

Project: Install or Upgrade Batt, Rolled or Reflective Insulation
Comments: Good job!

Denver

7/30/2021

Project: Install or Upgrade Batt, Rolled or Reflective Insulation
Comments: Company and employees worked with me to determine the â rightâ insulation solution for my home. Once we settled on an alternative, the Company executed the project to perfection. Their work has frankly transformed the comfort of our home. I cannot thank the owners, sales & project manager, and support staff enough for what they did to solve a complex insulation issue!

Greenwood Village

7/30/2021

Project: Insulate an Attic
Comments: No Problems and an efficient install!

Denver

8/13/2021

Project: Install Spray Foam Insulation
Comments: Super nice people. On time. Professional. I thought the price was great. Highly recommend.

Englewood

8/19/2021

Project: Install or Upgrade Batt, Rolled or Reflective Insulation
Comments: Really quick turnaround, great comms, on time execution, and most importantly the job was well done.

Centennial

8/19/2021

Project: Install or Upgrade Blown-In Insulation
Comments: There was some unexpected wall damage from the blown-in insulation and Koala sent out a tech on 2 different occasions to patch and prep the wall for painting. We were very pleased with the speed in which they made it right.

Denver

3/08/2021

I was very pleased with the work Koala Insulation performed at our home. Their price was reasonable, they were prompt and very friendly. I highly recommend them!

Denver

3/12/2021

The team arrived on time, reviewed the work plan and then walked the site with me making sure that we all understood the scope of work . Sean followed up after the job to make sure everything was to my standards. I would highly, highly recommend Koala Insulation of Southeast Denver.

Denver

3/23/2021

Presented a competitive cost for the insulation work to be done. Very thorough and professional; knowledgeable installer went out of his way to be sure I was satisfied with each phase - blown-in insulation in exterior walls which required accessing the walls from inside as we have a brick exterior, and blown in insulation in the attic. Cleaned up all the drywall dust and insulation; covered all the furniture, etc with plastic sheeting. Very pleased with the final result; house is definitely warmer without furnace running frequently.

Denver

3/31/2021

Jacob with Koala was prompt and efficient and did a good job cleaning up after they were done.

Denver

5/16/2021

Really competitive bid and very thorough job done!

Denver

05/30/2021

The service was great. Your ability to work the complexity of my project and schedule was worth every penny. Thank you!

Denver

6/`8/2021

Professional. Good communitation. Completed the job as promised.

Denver

6/28/2021

Excellent job. The whole job took maybe an hour and a half.

Denver

6/29/2021

Excellent service and pricing. I highly recommend these guys. Great customer process and honest, reliable people!

Denver

6/29/2021

Tyler and his crew were on time, professional and did an excellent job with our installation. We had a change to our order on arrival, due to us, and his customer service was top notch. I would highly recommend this company and use them again.

Denver

6/30/2021

Fairly priced, got the job done quickly. Explained everything in simple terms, did a good job of cleaning up after themselves. They were also very kind and friendly to my 4 year old son who kept talking to them as they were moving in and out of the house.

Denver

7/06/2021

Competent, clean, caring and cost appropriate.

Denver

7/08/2021

Job done very well.

Denver

7/13/2021

Tyler and Gabe got er done cleanly and efficiently thanks guys

Denver

7/19/2021

Koala does great work for us and I highly recommend them!

Denver

7/21/2021

Spray-foam installation

Denver

8/3/2021

Professional and excellent quality and service

Denver

8/12/2021

Such nice guys. Fast. Friendly. Know what they’re doing.

Denver

8/17/2021

Did a great job and very patient with all my questions

Denver

We Provide Insulation Services to the Following Southeast Denver Areas

LITTLETON, DENVER, CASTLE ROCK, ELIZABETH, FRANKTOWN, LARKSPUR, LOUVIERS, MONUMENT, PALMER LAKE, SEDALIA, USAF ACADEMY, WOODLAND PARK, COLORADO SPRINGS, LONE TREE, ENGLEWOOD, PARKER

Counties Served

DENVER, JEFFERSON, DOUGLAS, ELBERT, EL PASO, TELLER, ARAPAHOE

Zip Code

80123, 80128, 80226, 80227, 80232, 80235, 80236, 80104, 80107, 80108, 80109, 80116, 80118, 80125, 80131, 80132, 80133, 80135, 80840, 80863, 80921, 80120, 80121, 80122, 80124, 80126, 80129, 80130, 80110, 80113, 80208, 80209, 80210, 80219, 80223, 80111, 80112, 80134, 80138, 80237

We Look Forward To Hearing From You

We make the insulation process simple & easy.

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