- Air sealing first. Top plates, penetrations, chases and fixtures sealed before any material goes down.
- Baffles at every eave bay. Protects soffit airflow and lets us carry insulation fully to the exterior wall.
- The attic hatch built up, insulated and weather stripped, treated as part of the building envelope.
- Ventilation assessed and corrected so intake and exhaust are balanced.
- Insulation installed to your jurisdiction’s requirement, at even depth, and documented.
- Depth gauges installed. Code calls for one per 300 square feet. We install roughly double that, so the depth is obvious to you and to anyone who ever goes up there.
Blown In Attic Insulation in Boulder, Westminster, Golden and the Front Range
Let Our Insulation Experts Show You The Many Benefits Of Our High Performance Insulation.
Most attics on the Front Range were insulated once, when the house was built, and never touched again. We open a hatch and find four to ten inches of settled material, no baffles, bare framing at the edges, and peaks and valleys where somebody walked through it years ago. The hatch itself is usually a sheet of plywood with nothing on top of it.
That attic is not performing at half its rated value. It is performing at whatever the air leaks underneath it allow.
Koala Insulation of Boulder brings attics up to the insulation level your jurisdiction actually requires, installed as a complete job rather than a top off. Three certified BPI analysts on staff. Over 340 five star reviews.
Get a Free Estimate
Trusted
What R-60 Actually Looks Like
R-value measures resistance to heat flow. The higher the number, the slower heat moves through the assembly. R-60 is the current target across most of the Front Range, and where it is not code yet it is heading there.
Homeowners rarely get told what that means in inches, so here it is:
- R-60 in blown fiberglass is roughly 20 inches of material.
- R-60 in cellulose is about 19.7 inches at install, settling to roughly 18 inches over time. A good installer accounts for that settling on day one.
If somebody quotes you R-60 and leaves eight inches in your attic, you did not get R-60. You can check it yourself with a tape measure.
Do not know what your code requires?
We do. R-60 is the standard across Boulder, Westminster, Broomfield, Superior, Louisville, Lafayette and most of the Front Range. Some rural and mountain jurisdictions sit lower, at R-49 or below. We build to your jurisdiction’s requirement or better, and we will tell you which one you are in before you sign anything.
A Superior
“Blow and Go”, or Do It Right
The cheapest bid you get will add about five inches of material on top of what is already there and leave. No air sealing, no baffles, no hatch work, no ventilation correction. It is fast, it looks like insulation when the crew drives away, and it is the reason so many homeowners tell us their second floor is still cold.
Saving a thousand dollars on an insulation job to get five inches added is not a savings. It is paying for the disruption of an attic job and getting a fraction of the performance. Factor in that you will likely redo it, and the cheaper bid costs more.
Here is what our standard attic scope includes:
These capabilities define the insulation type:
Advantages Of
Blown-In Insulation for Homes in Boulder
Between high-altitude sun and chinook winds, homes in Boulder work hard to stay comfortable. Blown-in insulation helps by installing quickly, topping off existing layers, and supporting lower energy costs with year-round comfort. Additional advantages include:
Improved Air Quality
Because our crews air-seal key attic leaks before blowing insulation, the upgrade also helps keep dust, pollen, and other outdoor pollutants from sneaking into the living spaces of your Boulder home through ceiling penetrations.
Water & Fire Resistance
The blown-in products we install are designed with fire safety in mind. Proper installation around recessed lights, chimneys, and other heat sources is critical, and our team follows local codes and manufacturer guidelines to help keep your Boulder home safe.
Pest and Wildlife Protection
Pest deterrence is a real, if lesser-known, benefit: cellulose blown-in insulation (uniquely among loose-fill options) is treated with compounds that discourage insect nesting, and air sealing the attic closes off the gaps pests use to get into homes in Boulder.
Soundproofing
Beyond temperature, there is peace and quiet. Loose-fill insulation absorbs airborne sound, taking the edge off busy roads, barking dogs, and the thump of upstairs rooms so your home in Boulder feels calmer.
Environmentally Friendly
Made largely from recycled materials, blown-in insulation is one of the greenest upgrades your Boulder home can get. It cuts the energy needed for heating and cooling (by up to 40% in some studies), lowering both utility bills and carbon footprint.
Our Straightforward 4-Step
Blown-In Insulation Process
Free Home Efficiency Assessment
The Koala Insulation efficiency experts will perform a thorough examination of the current efficiency of your Boulder home.
- Prep for Safe InstallationEvery blown-in insulation project in Boulder starts with careful preparation. We protect floors and walkways, set up safe access to the attic, and install rulers or depth markers so we can confirm the final insulation level across the entire space. If needed, we will install baffles at the eaves to maintain ventilation and keep insulation from blocking soffit vents.
Koala Difference: The payoff: insulation that performs as designed, and your Boulder home left exactly as clean as we found it.
- Seal Key Leaks & Set Up EquipmentBefore blowing in insulation, our team addresses the air leaks common to homes in Boulder: plumbing penetrations, wiring, recessed lights, attic access points, and other leaks detected by our thermography leak detection system.
Koala Difference: Pairing air sealing with the blow-in is how we turn a good upgrade into a great one for your Boulder home.
- Blow In & Level the InsulationThen comes the main event: loose-fill is blown across the attic to the target depth and R-value. Corners, eaves, and the hard-to-reach pockets typical of homes in Boulder get deliberate attention, and we keep verifying against the depth markers until the whole space reads level.
Koala Difference: Coverage is everything. We take the time to verify depth and consistency so your Boulder home is not left with “thin spots” that reduce performance.
- Cleanup, Photos & Walkthrough
Once the target depth is confirmed, we vacuum the work area, pack out all equipment, and verify the attic access is sealed tight. Then we walk you through the project at your Boulder home, share before-and-after photos when available, and answer any questions about your new insulation.
Koala Difference: Our job does not end when the blower shuts off. Koala Insulation of Boulder is here for future questions, and to help you take advantage of any available rebates or tax credits.
Get a Quote
Let’s make your Boulder home the most comfortable house on the block. Book a free quote with Koala Insulation of Boulder today!
What to Expect
In 5 Easy Steps
In 5 Easy Steps
What to Expect
In 5 Easy Steps
Schedule Your Free Evaluation
Contact your nearest Koala Insulation Location, recognized as the #1 trusted insulation expert nationwide. We will discuss your needs and schedule an appointment to provide a free evaluation.
Home Efficiency Assessment & Estimate
One of our friendly insulation experts will perform a thorough home efficiency assessment. Your insulation expert will then review the assessment findings, the science behind these findings, and why any changes are needed. Lastly, your insulation expert will provide the best option that fits your home efficiency needs and your budget.
Schedule Your Insulation Service
We will schedule your insulation service for the soonest availability that fits your schedule because we understand that your home insulation is a priority!
Installation
Our team of highly skilled insulation technicians will install your premium insulation solution in as little as two hours. We treat your home like our own and take time to leave it cleaner than it was before.
Post Installation Inspection
Contact your nearest Koala Insulation Location, recognized as the #1 trusted insulation expert nationwide. We will discuss your needs and schedule an appointment to provide a free evaluation.
Enjoy Your Comfortable & Efficient Home
Enjoy a more efficient home with lower energy bills and improved comfort year-round. Enjoy your improved home stress free knowing that Koala Insulation stands behind their work! Reach out to your Koala Insulation team anytime for support.
Benefits
Enhanced Comfort
Energy Savings
Quality Materials
Eco-Friendly Options
Enhanced Comfort
Stay cozy inside, no matter the weather outside.
Energy Savings
Save on your energy bills while keeping your home comfy all year.
Reduced Noise
We use top-quality insulation to give you lasting results.
Eco Friendly
Choose insulation that’s better for your home and the planet, such as solar-powered attic fans.
Your Satisfaction is
Our Top Priority
But do not take it from us: hear what clients in Boulder say about their experience with our insulation team.
Rebecca Harris
15:20 02 Jul 26
Koala did a great job of replacing our attic insulation! The super nice technicians arrived on time and took special care with every step of the process. They removed the old insulation, sealed up all openings including around wires and fixtures, and blew in brand new insulation. They left everything, including the driveway, clean—no lingering bits of fluff anywhere! Thank you, Koala, for a job well done!
jeff keuter
00:23 29 Apr 26
Such a professional company to work with. They are quick to respond, and they left my home in great condition. After we had issues with our attic fan due to the box, they put around it to ensure our new insulation was protected. The Sales Manager and Project Manager came out to fix the problem themselves. They had it figured out and running like normal within an hour. I won't need insulation again for several years but would recommend them to anyone looking to replace theirs.
Will Murray
23:15 05 Feb 26
Best possible experience. Estimator came out right away and the crew arrived even early the next day. They were fast and efficient and did the expected work in no time at all, even cleaned up so that you would never know they had been there. Superior service.
Amanda A
17:58 26 Jan 26
These guys are fantastic. I had them come in to blow insulation into my 1980s home between my main floor wood floors and my basement ceiling. It no longer sounds like my kids are a herd of elephants and I have the unexpected benefit of not having to use as much heat in the basement. The technicians were all courteous and the company was great to work with.
Beau Beck
20:25 22 Jan 26
The team at Koala is a level above everyone else. We are a GC and have done repeated insulation projects with them. From the owner, Chris, on down, everyone is super professional, courteous, prompt, and dedicated to getting the job done right. A pleasure to work with.
Summer-Solstice Thomas
21:34 10 Jan 26
Devin was super flexible and worked around our chaotic schedule. The spray foam in our crawlspace has made such a huge difference for our house—the downstairs is no longer drafty at all (and it used to be very drafty). I’m a bit OCD and noticed a few places where the foam was a tiny bit scant, and Koala came out right away, no questions asked, to spray more foam. They truly did an amazing job and I would highly recommend Koala Insulation.
Heather Margolis
00:23 31 Mar 25
I cannot say enough about Koala Insulation! I had a small job but it needed to be done at a specific time when we were having other work done. Probably one of their smallest jobs and KI was incredibly helpful and accommodating as if it were a much bigger deal. From the person who did the estimate to the support I got in person or one the phone every single person was kind, willing to explain every step and the result is phenomenal. The area of my home that wasn’t insulated was always freezing when it was cold out. We just had a cold snap and I was thrilled to see it was a good 10 degrees warmer than it used to be. I’m thrilled for the cost savings in heat and AC! Well worth it!
Alicia
22:44 25 Mar 25
Great service. Team was professional.
Explained what they were doing in detail and then showed pictures after. They were respectful of furniture and fixtures. They left everything as they found it. My goal was to improve insulation in a cold bathroom. so far so good. I may even get some reduction in noise. Thank you Koala.
Explained what they were doing in detail and then showed pictures after. They were respectful of furniture and fixtures. They left everything as they found it. My goal was to improve insulation in a cold bathroom. so far so good. I may even get some reduction in noise. Thank you Koala.
David Lock
15:51 18 Mar 25
Company responded to my inquiry and a consultation was scheduled quickly. Consultation was direct and to the point with minimal salesmanship, which was appreciated. When I was ready for the project to be scheduled, that was handled quickly as well. Work was completed quickly and efficiently with minimal hassle. Workers were communicative about progress, and reviewed everything after it was completed. Workers were also very clean during the work and cleaned everything up when they were completed. Overall, very satisfied with my experience with the company and the service.
Sam Taylor
14:31 12 Mar 25
I hired Koala to insulate my crawl space and replace the old insulation in my attic. They came by pretty quickly to inspect the space and provide an estimate, and offered a really reasonable price. On the actual day of installation, they worked quickly and pretty quietly. I can feel an immediate difference in the warmth of my kitchen (the biggest issue on cold days). Really happy with their work and professionalism.
Elizabeth Wangler
04:38 31 Dec 24
Quality work and reasonably priced. Very responsive.
phil sustronk
00:21 31 Dec 24
Solid team of hard working young men. I would not hesitate to use them again or give a 5 star recommendation.
mark wiegers
18:52 29 Dec 24
Koala Insulation of Boulder:
I contacted Chris White from Koala Insulation of Boulder in late November and he was able to get me scheduled before the holidays. His spray technician Bernie and assistant Brandon showed up promptly on the morning of installation. They were both very professional, polite and friendly. I was communicated to exceedingly well, and knew from start to finish what was happening. Care in clean up was also done well.
My back office and garage attic now feel much warmer and quieter and these efficiency improvements will add value to my home. I can now do some final wiring and finish work with confidence.
I am quite pleased with the results and would recommend Koala Insulation to anyone. Money well spent!
Mark W
I contacted Chris White from Koala Insulation of Boulder in late November and he was able to get me scheduled before the holidays. His spray technician Bernie and assistant Brandon showed up promptly on the morning of installation. They were both very professional, polite and friendly. I was communicated to exceedingly well, and knew from start to finish what was happening. Care in clean up was also done well.
My back office and garage attic now feel much warmer and quieter and these efficiency improvements will add value to my home. I can now do some final wiring and finish work with confidence.
I am quite pleased with the results and would recommend Koala Insulation to anyone. Money well spent!
Mark W
Will C
03:20 27 Dec 24
Super Professional Services. They were very nice, thorough, on time and great to work with. Would recommend.
Tasha
06:31 20 Dec 24
Great job. The team did their work efficiently, finished on time, and cleaned up.
Craig D
00:59 17 Dec 24
UPDATE: It's been over a month now and I'm so happy I did this! I used to know how cold it was outside the second I put my feet on my bedroom floor, but now I have no idea because it's toasty warm! Thanks again guys!
- - -
I'm a hard guy to impress, but impress me they did! Devin was thorough when we went over my needs, and he was great with communication and getting me an estimate quickly. The price for the foam insulation job was very reasonable (I'd looked previously and had sky high estimates).
The Job. My house has numerous rooms with cantilevers that overhang the level below, and they were poorly insulated in the late 70's. The floor over these cantilever areas was freezing all winter long! I had enough, time to fix it properly!
Bernie was the specialist that was sent to do my job and he was great! He and his assistant were extremely courteous, professional and clean! They went above and beyond when hearing what was most important to me, and did an outstanding job! They were fast, polite and made a big effort to work cleanly.
I'm extremely happy with the job that Koala Insulation of Boulder did, and will definitely call them back for the other insulation projects that my older house needs. Bring on the cold!
Thanks guys! - Craig
- - -
I'm a hard guy to impress, but impress me they did! Devin was thorough when we went over my needs, and he was great with communication and getting me an estimate quickly. The price for the foam insulation job was very reasonable (I'd looked previously and had sky high estimates).
The Job. My house has numerous rooms with cantilevers that overhang the level below, and they were poorly insulated in the late 70's. The floor over these cantilever areas was freezing all winter long! I had enough, time to fix it properly!
Bernie was the specialist that was sent to do my job and he was great! He and his assistant were extremely courteous, professional and clean! They went above and beyond when hearing what was most important to me, and did an outstanding job! They were fast, polite and made a big effort to work cleanly.
I'm extremely happy with the job that Koala Insulation of Boulder did, and will definitely call them back for the other insulation projects that my older house needs. Bring on the cold!
Thanks guys! - Craig
Kristen Kruszewski
22:01 12 Dec 24
Chris the owner was very communicative and his team helped us figure out what we needed. They didn’t push for anything we weren’t interested in. The quality of work was outstanding- the install team made sure to dam all the areas of the attic where blown in insulation could fall as well as around the attic hatch, which also forces the batting above the hatch to stay in place. I feel like they offered a fair price for materials & services and were able to schedule us quickly. All in all, a great company to work with.
Julio Zubillaga
23:29 24 Nov 24
The Koala team provided great service from start to finish. The free evaluation was easy and they provided us with thoughtful recommendations along with a few different packages to choose from. On the day of the install, the crew was efficient, knowledgeable and extremely friendly. Zero issues with installation and they were very considerate regarding prep and clean up. Overall, we've been very happy with our decision to use Koala and would gladly recommend their services to others. We're looking forward to enjoying a much warmer winter!
Ryan Lent
16:02 26 Jul 24
After replacing our metal barn roof we discovered the last spray foam company ripped us off, charging for 3” of foam and only applying 1.5” of foam. Koala was extremely fair on price for removing the old material and quoting an entire reapplication. This is a very expensive process regardless, however they’re worth it! From start to finish it was clear that honesty, quality and customer satisfaction is what their company is built upon. We’re very happy with our end result!
Devin Vigil
23:40 10 Jul 24
Amazing service, the team was very quick, got us in earlier than expected and was in and out quickly. They added more insulation than I expected and left our house very clean. We opted for the solar fan and added a few soffits. Man was that the right move. After adding central air to our house we noticed the upstairs would not cool down when sun was shinning on house but after this service it is night and day difference. Our AC isn’t running all day, we are cool and saving tons of $$
Serving Boulder and the Front Range with Expert Blown-In Attic Insulation
We proudly serve homeowners throughout Boulder, Longmont, Golden, Westminster, Erie, Broomfield, Lafayette, Louisville, and the surrounding Front Range communities. Whether you're upgrading an older attic or bringing your home up to today's recommended insulation levels, we tailor every recommendation to your home's construction, energy goals, and local building requirements.
Get a FREE Quote
What Makes
Koala Different?
CCEF Approved Contractor
Koala Insulation of Boulder is an approved contractor with the Colorado Clean Energy Fund. That means our customers can finance insulation work through RENU loans and ClearPath On-Bill financing, with terms built specifically for energy efficiency improvements rather than a generic home improvement loan.
Not every insulation contractor in Colorado carries this approval. Ask us about it on your estimate and we will walk you through what you qualify for.
Limited Lifetime Warranty
Our work carries a limited lifetime warranty. In practice it is simpler than that sounds. If we did the work on your home and something is not right, you call us and we come back and fix it. No claim forms, no argument about what is covered.
Three Certified BPI Analysts on Staff
The Building Performance Institute certifies professionals to assess how a home performs as a complete system: air leakage, insulation, ventilation, moisture and combustion safety. Most insulation companies do not employ a single certified analyst. We have three.
It is the difference between someone who can install insulation and someone who can tell you why your house is uncomfortable in the first place.
Get a Quote
Let’s make your Boulder home the most comfortable house on the block. Book a free quote with Koala Insulation of Boulder today!
Frequently Asked Questions
Your Blown-In Insulation Questions, Answered
Get all your questions answered by our local experts. If we didn’t address your question here, give us a call at (720) 738-7825 or schedule a free quote today!
What Does Blown-In Insulation Cost in Boulder?
Blown-in insulation is one of the more affordable ways to upgrade home comfort, and the final investment comes down to a handful of factors.
The biggest factors include:
- The size of your home: More attic square footage means more material and more installation time.
- The type of insulation used: Materials like cellulose and fiberglass are priced differently.
- The level of effort involved: Attic access, prep work, air sealing, and any old insulation removal all shape the scope.
The good news is that the investment pays you back through steadier comfort and lower heating and cooling costs season after season.
Rebates from state and local governments and from many utilities can also help take a bite out of the total, and our team can point you toward what may be available. Every home in Boulder is unique. For an accurate estimate tailored to your property and goals, contact the team today to schedule a free assessment.
Is Blown-In Insulation Better Than Rolls (Batts)?
For attics, blown-in usually wins. Loose-fill flows around joists, wiring, and pipes to form one continuous blanket, while rolls (batts) tend to leave small gaps at edges and obstructions. In attics in Boulder, those little gaps add up to drafts, uneven rooms, and performance below the rating on the package.
How Much Blown-In Insulation Do I Need?
The right amount comes down to three inputs: the square footage of the space, the insulation depth required, and where you live (see the map below). Climate drives the recommended attic R-value, with colder regions needing thicker insulation to slow heat loss and warmer regions needing enough depth to block heat gain. Attic size and target R-value together set how much material consistent coverage requires. Boulder falls in IECC Climate Zone 5B (cold), where DOE and ENERGY STAR guidance calls for attic insulation of roughly R-38 to R-60.
That is why professional installers do not eyeball it: material calculations follow climate-zone guidelines, current insulation levels, and manufacturer coverage charts. Done right, the depth matches the recommended R-value for your area, allows for natural settling, and leaves no thin spots to drag down performance. The diagram below illustrates how recommended attic insulation levels shift by region, a quick way to see why needs differ from one location to the next.
Insulation Education
Learn why insulation is critical to your home’s energy efficiency and your family’s comfort.
Learn More
Get a quote
Ready to start your insulation project? Get a free quote from your local Koala Insulation team today.
