Spray Foam Insulation in Longmont, CO

Find top-rated spray foam contractors and save up to 37% on energy bills

Compare 16 verified spray foam insulation contractors serving Longmont, Colorado, backed by 842 customer reviews averaging 4.7★. Whether you're insulating a new build, retrofitting an existing home, or upgrading attic and crawl-space insulation, these pre-screened Longmont contractors handle both open-cell and closed-cell spray foam. Homeowners here typically cut energy bills by around 37% — get free quotes and read verified reviews below.

💰 Estimated Energy Savings in Longmont

37%
Average Energy Savings
Typical range: 32% - 42%
$1,732
Estimated Annual Savings
Based on $390/month average energy cost
4 years
Average Payback Period
Return on investment timeline

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

Verified Contractors in Longmont

5⭐
30 Google reviews

Recent Reviews:

Joe Nethken★★★★★2 years ago

I haven't actually used their services as of yet But know I will in the future and I'd refer anyone I know to them They seem to be on the level straight shooters and good for what they say as far as I can tell Great guys hard workers very reasonable rates for their industry Good luck guys on your journey!

Hector dias★★★★★a year ago

Great people, good service, excellent communication. i recommended this company

Cesar Ochoa★★★★★a year ago

These guys kill always do a great job was pleased with there work !!!!!!! Recommend

5⭐
1 Google reviews

Recent Reviews:

Kurt Smith★★★★★7 years ago

5⭐
21 Google reviews

Recent Reviews:

Trevor DePew★★★★★2 months ago

I just received attic insulation from Arvada Insulation. I'll save you the time on shopping around, Arvada Insulation was the most competitive quote by far. I was new to the attic insulation process, so I received quotes from several other vendors in the area to get a baseline. More importantly, Phil was very easy to work with. Friendly, honest, and straight to the point. Phil gave me a quote, and maintained the price throughout. Even after making several repairs and modifications to improve the integrity of my attic beyond the insulation. Vic was also nice. He enthusiastically showed me how the fiber glass hopper worked. Phil was careful to keep the work area clean, and the fiber glass insulation was not as dusty or messy as I would have expected. I will be recommending Arvada Insulation to anyone in the area :)

Ben Findley★★★★★a year ago

I had a great experience with Phil & Arvada Insulation. One of the bedrooms in our 1959 house was always colder in the Winter and warmer in the Summer. Now that it was a nursery for our baby boy we needed to do something about it. After trying a new vent and cellular shades I decided it was time to try to get the walls insulated, which felt like it would be a daunting (and expensive!) task. I called Phil from Arvada Insulation because I knew he was local to my neighborhood. Phil talked me through his process and my options to blow in insulation into the walls then scheduled a same day estimate. He was right on time for the estimate (though I almost napped through it) and throughly reviewed the room inside and out then provided my options and a hand-written estimate at a shocking reasonable price. I was hesitant about how my exterior brick/mortar would look following the project and Phil went the extra mile by showing me some other properties where he had done similar work and creating a new mortar sample just for me. On the day of the project Phil again showed up on-time, was respectful of my property, and did an extremely professional and thorough job. The best part is that it actually WORKED! My baby’s nursery maintained heat 3-4 degrees better than it had before which is such a huge relief. I highly recommend Phil & Arvada Insulation and will most definitely be calling him for future insulation projects.

Matt M★★★★★a year ago

After getting a great quote from Arvada Insulation for my attic insulation job, I accepted and got scheduled quickly. It included the sun room which another company had missed. I was impressed with his knowledgeable approach, and how good the results were. Thanks Phil and Vic, I will be recommending you in the future!

Direct: (720) 410-3506

5⭐
5 Google reviews

Recent Reviews:

Cristian Jimenez★★★★★2 years ago

We needed spray foam in our garage done. We scheduled an estimate and within a few days we were able to get the work done. Our garage has never felt better! We will definitely be recommending them to our family and friends. Thanks for the great work, JD Insulation!

Jason Dopler★★★★★11 months ago

Couldn’t be happier with the work they did! Was a last minute idea before we finished up the project and they were able to make it out fast and did a great job!

Carlos Calin★★★★★2 years ago

Professional, amigable and knowledgeable staff.

5⭐
236 Google reviews

Recent Reviews:

Cameron Faulkner★★★★★4 months ago

These guys were fantastic. I knew the insulation in my attic was low (around 6–10 inches), so they came out, assessed the situation, and provided a quick, clear estimate. I considered doing it myself, but for just a bit more money (and a lot less time and hassle) it made so much more sense to have them handle it. I'm glad I did. The upstairs temperature has dropped by about 5°+ on 90° days, and now it's roughly the same as downstairs which is huge for my A/C unit and electric bill.

Richard Cox★★★★★a month ago

Koala Insulation did a fantastic job upgrading the insulation in our attic and other parts of the house. They identified key areas for improvement, and the project plan earned praise from our home energy advisor. When it was discovered on the day the work was to take place that an issue with construction of our house prevented the project from happening as originally planned (and bid), Koala worked to troubleshoot the issue and provided us with a compromise solution that was fairly priced and still allowed for maximum insulation benefit under the circumstances. The Koala team who did the work were friendly, professional, and great to have around. They finished the job quickly and cleaned up completely afterward. We’re looking forward to greater comfort and energy savings this winter!

Jon Patton★★★★★a month ago

Absolutely the best service! A year ago we needed to replace a room of insulation for mice mitigation. Koala helped out. They were very professional, on time, and efficient. We decided to finish a bathroom in the basement. So, I called to see if they could do the same thing a remove and replace the insulation. I talked to Justin, and glad I did. He was immensely helpful. He gave great advice and actually did something most businesses don't these days. He actually said the price to do this would be more expensive to go with them, and walked me through how to do it myself and save hundreds! What business wouldn't just accept the job and make me pay hundreds more without realizing it? Koala Insulation of NoCo we appreciate all of your advice and will continue to recommend your services!

On-Point

⭐Specialist

Direct: (720) 702-9660

5⭐
28 Google reviews

Recent Reviews:

Scott Stubblefield★★★★★2 years ago

Fantastic crew and service. Professional, fast and friendly. I would highly recommend.

William Leigh★★★★★3 years ago

The quality and professional workmanship of this company is great. I would highly recommend them if you are in need of a spray foam insulation in your home, attic or business.

Adam Chairez★★★★★3 years ago

Overall Great service , I definitely recommend , they have been great to us for years now , they are my go to .

5⭐
1 Google reviews

Recent Reviews:

Ben Ben★★★★★a month ago

4.9⭐
29 Google reviews

Recent Reviews:

Alvin Chaney★★★★★3 years ago

Overall my whole experience with the company from start to finish excellent customer service . I would highly recommend my closest friends and family to do the same and call the Apex team for all the services they might need. Thanks again and keep up the Great Work...

Kim Lucero★★★★★2 years ago

This company does excellent work, they are very hard working and got the job done. Very professional and respectful. I recommend for good quality work.

Lauri Garcia★★★★★a year ago

Company has integrity and professionalism. As seem in photos job well done!

4.9⭐
342 Google reviews

Recent Reviews:

mark wiegers★★★★★11 months ago

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

Craig D★★★★★11 months ago

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

Devin Vigil★★★★★a year ago

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 $$

Direct: (970) 388-9357

4.8⭐
25 Google reviews

Recent Reviews:

Kathryn Wilkinson★★★★★8 months ago

My parents recently hired "The Insulation Guy" to install insulation in their home, and we couldn’t be more impressed with the service. From the initial consultation to the final installation, the owner was professional, knowledgeable, and efficient. He took the time to explain the different insulation options, helping my parents make an informed decision based on their needs. The installation process was smooth, and he ensured that everything was done right. Since the job was completed, we've noticed a significant improvement in the comfort of their home, with more consistent temperatures and lower energy bills. I highly recommend The Insulation Guy for anyone in need of top-notch insulation services!

Mike Mowen★★★★★8 months ago

Chuck is excellent to work with on your insulation project. He addresses every possible cause of an insulation issue and goes out of his way to address them. He is very honest and kind. I highly recommend him!

Heather Yup★★★★★a year ago

I’ve used Chuck and his crew at The Insulation Guys several times now, and they’re always amazing! Chuck’s expertise is top-notch, and his crew works tirelessly to get everything just right. They’re friendly, trustworthy, and always make sure I’m in the loop. I wouldn’t trust anyone else with my home

4.8⭐
25 Google reviews

Recent Reviews:

Meg du Bray★★★★★2 months ago

Everyone at Ascend was incredibly warm, helpful, and professional. They did an excellent job with my installation, and were communicative at every step. Further, they helped explain how to apply for a rebate from my energy company and walked me through the tax implications in a clear way that made everything go smoothly. I cannot recommend them enough!

Shellie Neubauer★★★★★2 weeks ago

This company did a crawl space encapsulation and radon mitigation system for me. They were wonderful. Great guys, on time, left the place cleaner than it was. Highly recommend!

Billy Hubbell★★★★★8 months ago

Connected with Ascend through the Fort Collins energy rebate program. Talked with Lizzy on the phone and Chris came out for the estimate. Super easy to work with and great communication all around. We decided to have our attic sealed (spray foamed) and new blown-in insulation installed. When it came time to do the work, Pete and crew were all very polite, professional and kept our home clean during the process. Again, communication was outstanding. Never was I wondering where we were at in the process or what was happening next. Work was completed on time with no outstanding issues. Highly recommend and will use them again for future projects.

4.8⭐
24 Google reviews

Recent Reviews:

Monica Benavidez★★★★★10 months ago

I had a great experience. Very professional and courteous. Got a hold of me in timely manner. Highly recommend.

Steven Blesso★★★★★3 years ago

They are a reputable company that does what they say they will do. I appreciated the line of communication they kept. Highly recommended.

Krystalyn Shepherd★★★★★3 years ago

Communication was great, answered all my questions and they were on time. I recommend this Company. 👍

Direct: (844) 840-3626

4.3⭐
10 Google reviews

Recent Reviews:

Nathan Gross★★★★★7 years ago

I've hired Cole and his team twice to insulate some less than typical structures. The first time was a shipping container house, the second for a school bus camper conversions. In both cases I was blown away with the results. Cole and his team have exceptional customer service and a high attention to detail. After seeing the work of some other installers, I won't be hiring anyone but PolarPak for any future projects.

Alvin Kitzmann★★★★★6 years ago

With the usual trepidation one experiences when hiring a contractor, it is always a pleasure to encounter a company that exhibits knowledge, professionalism, and a desire to make their customer happy. This, PolarPak did from start to finish. Cole (owner) and Loren showed up, on time, to fix the cause of mold on the interior of my exterior walls. Typical fiberglass insulation creates a barrier, allowing condensation to occur whenever freezing outside temperatures meets inside home temps, with the end result -mold. They covered everything, including the floor, before they started. Then, carefully viewing the job before them (I had just installed a fire block which created a challenge), they sprayed foam everywhere it was needed, plus a few extra areas that I asked them to take care of. They did all this with a smile. I highly recommend PolarPak for your home insulation needs. And besides mold remediation, their process stops insect infiltration and drafts. Very nice.

Kyle Ussery★★★★★7 years ago

Cole and his team did a great job insulating my A-Frame style garage building. It was a challenging job, and they nailed it. It makes a huge difference. The building is now comfortable, regardless of the temperature outside.

4.3⭐
16 Google reviews

Recent Reviews:

Nate Mead★★★★★in the last week

These guys absolutely exceeded my expectations!

Matthew Berger★★★★★3 weeks ago

Quick, clean and efficient with incredibly fair pricing!

Laurynn Locey★★★★★a year ago

Came on time, worked hard and cleaned when they left. This is our second time using them. First for the basement and now the attic. I would recommend this company to anyone.

4.1⭐
25 Google reviews

Recent Reviews:

KommoTioN Ktn★★★★★9 years ago

Great Staff. Great service and quality of work.

Jim Sheehan★★★★★12 years ago

I hired RG Insulation to install baffles and blow additional insulation in my attic. Everyone I dealt with from the salesman who quoted me the price to the two gentlemen who performed the work were very professional. They took care to protect my floors and prevent mess. They did an excellent job in a short period of time and then made sure I pleased with their work. Plus, their price was excellent as compared to competitors. Highly recommend!

Vorian★★★★★5 months ago

Great staff

4⭐
24 Google reviews

Recent Reviews:

R W★★★★★7 years ago

We obtained in-home quotes from several insulation companies to upgrade our home insulation, air seal, and install a whole house fan. After narrowing it down to 2 possible contractors, we chose Timberline Insulation. We were VERY happy with our choice. Reed's in-home inspection was very informative and we found him to be very friendly, knowledgeable, and easy to work with throughout the process. Their quote was more competitive than the others. He and his 3 man crew were very efficient, tidy, and organized. They completed the extensive job in 1.5 days and were very conscious to leave the area very clean at the end of each day. I give them my HIGHEST recommendation.

Amy Gomez★★★★★10 months ago

Timberline Insulation was great to work with. John answered all of our questions, provided us with a fair quote, and got us scheduled within a very reasonable timeframe. We are extremely happy with the results and can tell a significant difference from the work performed. The installation crew was very professional and efficient. We highly recommend this company.

Ross Lightsey★★★★★2 years ago

EXTREMELY PROFESSIONAL!!! John and his crew were/are very knowledgeable and simply did great work. They were very good at explaining the details of insulating a new house, as well as even educating me on other code issues. If you want a good job done, go with Timberline. None finer!!

Frequently Asked Questions — Spray Foam Insulation in Longmont

These are the questions Longmont homeowners ask most about spray foam cost, R-value, and open- vs. closed-cell foam — with context for local pricing and roughly 37% typical energy savings. Compare the 16 verified Longmont contractors above for exact quotes.

Why is spray foam insulation especially important in cold climates like Longmont?▼
In cold climates like Longmont, CO, proper insulation is critical to preventing heat loss, ice dams, and frozen pipes. Spray foam's air-sealing properties stop the cold air infiltration that traditional insulation cannot address. It also prevents the moisture buildup inside walls that leads to mold in cold-weather freeze-thaw cycles. Homeowners in CO typically save 25–35% on heating costs. Note: in tightly sealed homes, proper mechanical ventilation is commonly recommended to maintain fresh air exchange without losing the heat you've paid for.
Does spray foam insulation prevent ice dams in Longmont?▼
Yes — spray foam insulation is one of the most effective solutions for preventing ice dams in cold climates like Longmont, CO. Ice dams form when heat escapes through a poorly insulated attic, melting snow that refreezes at the eaves. By creating an air-tight thermal barrier in the attic, spray foam eliminates the heat loss that causes ice dams in the first place.
What R-value do I need for spray foam insulation in Longmont?▼
For cold climates like Longmont, CO, the Department of Energy recommends attic insulation of R-49 to R-60. Closed-cell spray foam provides R-6 to R-7 per inch, meaning 8–10 inches achieves code-minimum performance. Open-cell foam at R-3.5 per inch requires greater thickness. A local contractor familiar with CO building codes can recommend the exact specification for your home.
Is spray foam insulation worth the cost?▼
For most homeowners, yes. Spray foam creates an air-tight seal that traditional insulation cannot match, reducing energy bills by 15–35% annually. It also adds structural rigidity, acts as a moisture and vapor barrier, reduces outside noise, and can increase home resale value. The higher upfront cost compared to fiberglass is typically recovered within 3–7 years. One important note: because spray foam creates a very tight building envelope, proper mechanical ventilation is important to maintain healthy indoor air quality and prevent interior moisture buildup. This is typically handled by an Energy Recovery Ventilator (ERV) — a system that brings fresh outside air in while pushing stale air out, recovering the energy from the outgoing air so you don't waste what you paid to heat or cool — or a Heat Recovery Ventilator (HRV), which works similarly but is optimized for cold climates. A qualified contractor will assess whether your home needs ventilation upgrades as part of the installation.
How much does spray foam insulation cost in Longmont, CO?▼
In Longmont, CO and the surrounding area, spray foam insulation typically costs $1.00–$3.00 per square foot installed, depending on the type and your home's specifics. Open-cell foam runs $0.44–$0.65 per board foot, while closed-cell foam costs $1.00–$2.00 per board foot. A typical 2,000 sq ft home attic in Longmont costs $2,000–$6,000. Most Longmont homeowners recoup this investment within 3–7 years through energy savings of 15–35% annually.
What is the difference between open-cell and closed-cell spray foam?▼
Open-cell spray foam is softer, less dense, and less expensive. It expands significantly and is ideal for interior walls, attics, and soundproofing. Closed-cell spray foam is denser, stronger, and provides a moisture barrier — making it better for exterior applications, crawl spaces, and areas prone to flooding or humidity. Closed-cell also has a higher R-value per inch (R-6 to R-7 vs R-3.5 to R-4 for open-cell). One key difference: open-cell foam allows some vapor movement, while closed-cell acts as a vapor barrier — an important consideration for your home's ventilation needs.
How long does spray foam insulation last?▼
Spray foam insulation is one of the most durable insulation options available, with a lifespan of 80+ years when properly installed. Unlike fiberglass batting which can sag and settle over time, spray foam maintains its shape and insulating properties indefinitely. It will typically outlast the building it is installed in.
How do I find a qualified spray foam insulation contractor in Longmont, CO?▼
When searching for a spray foam contractor in Longmont, CO, look for ones who are licensed, insured, and have verifiable reviews. Spray foam requires specialized equipment and training — improper installation can cause off-gassing, adhesion failure, or fire hazards. Ask for references, verify their insurance, and get at least 2–3 quotes. A qualified Longmont contractor will also assess your home's ventilation needs — a tightly sealed spray foam installation requires adequate mechanical ventilation to prevent moisture and indoor air quality issues. FoamMatch pre-screens all listed contractors in Longmont for licensing and insurance so you can compare verified professionals in your area.
How long does spray foam installation take?▼
Most residential spray foam jobs take 1–2 days depending on the size of the area. A standard attic takes 4–8 hours. After spraying, the foam cures within 24 hours, though most contractors recommend waiting 24–72 hours before occupying the space due to off-gassing during the curing process.
Does spray foam insulation need to be replaced?▼
No — spray foam insulation does not need to be replaced under normal circumstances. Unlike fiberglass insulation which degrades over time, spray foam maintains its R-value and air sealing properties for the life of the building. The only reasons to remove or replace spray foam are water damage, renovation work, or improper original installation.