Find top-rated spray foam contractors and save up to 37% on energy bills
Compare 25 verified spray foam insulation contractors serving Denver, Colorado, backed by 1,341 customer reviews averaging 4.9★. Whether you're insulating a new build, retrofitting an existing home, or upgrading attic and crawl-space insulation, these pre-screened Denver 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.
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.
Recent Reviews:
Done such an amazing job with great quality. The crew kept site clean and organized plus all questions and concerns were handled with exceptional knowledge and friendly service from management. I would recommend this company to anyone and use them on future projects.
Fantastic customer service from start to finish, any questions I had were quickly answered and for how fast they operate, the quality of work is incredible. Crew members were friendly and professional. Absolutely would recommend this company for your insulation needs.
Great customer service and such an easy/quick process all around! They were fast, attentive, and efficient. I recommend this company to anyone needing work.
Recent Reviews:
They did a workshop, filled in 2x8 rafters and 2x6 walls. Great price, showed up on time, and did an amazing job. It was completely off gassed by end of the day.
M & G insulated & installed radiant barrier in my 1000 sq ft attic, they did an excellent job and at the best price. The combination of radiant barrier + pink insulation is perfect for Denver summers. My swamp cooler never needs to be turned up to high now. - M & G team know what they are doing, bid the job correctly, have the correct equipment, and were professional. You can trust these guys for a fair price & a quality job. Hard to find honest construction work in Denver & you will be very happy with M & G -
M&G Insulation LLC is the BEST in the industry period. If you're in the front range I would not hesitate to schedule your job with them, don't waste your time getting bids, go with M&G and be done with it.
Recent Reviews:
Fantastic crew and service. Professional, fast and friendly. I would highly recommend.
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.
Overall Great service , I definitely recommend , they have been great to us for years now , they are my go to .
Recent Reviews:
We had Aurora Insulation Pros insulate our basement before finishing it, and they did a great job. The team was professional, stuck to the schedule, and made sure everything was sealed properly. Now that it's done, the basement is warm and comfortable with no drafts. Glad we went with them!
I called around to a few places before settling on Aurora Insulation Pros. Even though I live in Denver, they had no issue coming out here. What really sold me was how straightforward they were on the phone with no pushy sales pitch, just honest info. The attic was done in one afternoon, and I noticed right away the second floor didn’t feel like a sauna anymore. Appreciate the solid work, and I’d call them again without hesitation.
After getting quotes from various attic innsulation companies in Aurora, we had them out to add insulation to our attic after noticing some serious temperature swings upstairs. Scheduling was easy, and they actually showed up on time (rare these days). There was a small miscommunication about the access point they’d use, but they handled it professionally and kept everything clean. It’s been about two months now and the difference in comfort, especially during cold nights, is huge. We’re really happy we went with them.
Recent Reviews:
We were dealing with drafts all over the house and high energy bills. After a home energy audit, we decided to get new insulation. From the initial inspection to the final walk-through, everything felt straightforward and honest. The house feels warmer and quieter now.
I had to do a spray foam insulation removal project in my attic because the previous installer did a bad job sealing everything. These guys knew exactly how to tackle it without damaging the roof deck. It wasn’t cheap, but I feel way more confident now that it’s been redone properly. If you need an attic insulation removal service, they’re the ones to call.
Jesus and his team did an amazing job encapsulating our crawl space. Not only was the work done well, but the crew was great to have at our home. They were timely, fast, and friendly. If you want high quality work at a reasonable price, these are your guys!
Recent Reviews:
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 :)
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.
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!
Recent Reviews:
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!
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!
Professional, amigable and knowledgeable staff.
Recent Reviews:
Extremely efficient and didn't break my bank thanks Gary.
Gary was extremely responsive, knowledgable, and easy to work with. We got on his schedule almost immediately. The price was very fair compared to some other quotes we got close to 3x as much. Gary and Josh operated very quickly, effectively, and cleaned up after it was done (roughly 1hr). We have a 1,400 sq. ft. attic and every inch of it needed to be blown up to code. I would definitely recommend their services.
Recent Reviews:
Recent Reviews:
We recently had REenergizeCO perform a Home Energy Audit, and we were extremely pleased with the results! Marissa did a fantastic job with the audit--she was very knowledgable, worked quickly and efficiently, and was very friendly. (As an added bonus, our dog fell in love with Marissa and she might be his new best friend.) The report that we received was helpful in identifying improvements that we want to make to our house to make it more energy efficient, and we appreciated receiving an associated quote to perform the suggested work so we had an idea of how much the upgrades would cost. Overall, we would definitely recommend working with REenergizeCO, especially because of Marissa's great customer service!
Following an energy audit I came across this Xcel Energy registered company. Dexter and his team did a great job upgrading the insulation in our attic to current standards. They were the only company that offered to squeeze into two lower attic areas to also address the insulation there. The team was technically strong, very friendly and considerate, overall everything worked out very well. Two areas that required follow-up: - attic hatch - rather than just increasing the insulation, as proposed, we decided to completely redo the hatch - dam - single wall cardboard was used around the furnace, that does not hold up to physical impact during routine maintenance work in that area. Particle board as used around the hatch should have been specified Costwise Reenergize CO was the highest of 4 quotes, but they also were the ones that were most flexible.
I waited 2 years after getting my solar to write this because I wanted to make sure the company resolves problems that arise post-installation. They do. They have always been super responsive. Also, they just seem like nice people who are not out to steal your money. I noticed this the first time I met one of them. He came to the house to test whether for air leaks and other energy losses. In the end, he told us our house is in great shape and didn't need any work. How often does a contractor tell you that? They installed the solar over the course of two weeks. We had a panel go off line a few months later. They came out and fixed it within two weeks or so. We had a wifi disconnect, they came out to fix that too. No fuss. Great company.
Recent Reviews:
Had our attic sealed and insulation re-blown. First, if you’re considering it, do it. Makes all the difference - your rooms are not just warmer, but temperature is much more even. Not something you can get by just blasting the furnace. Robert and his team were great. He himself was on site everyday and doing the work, and ensuring his team was being thorough. He’s also just extremely knowledgeable and thinks of things none of the other 3 companies I got quotes from did. And he was the only one to actually go in the attic to build a quote, which is a big deal for me. We found a couple issues he built a plan around fixing the others did not.
Simple Home Energy Solutions/Robert (owner) and his team were very professional, timely, communicated well and prompt with any questions or concerns. We recently had an insulation replacement in our attic and air sealing which went smoothly and performed to high quality standards. I would highly recommend Simple Home.
Robert came to our house to inspect the moisture that was in our attic after the roofer that replaced the shingles in 2023 did an inspection and said there were no problems with the roofing. Robert found that the wrong roof vent cap was installed thus not allowing any exhaust from the furnace and water heater to exit. This caused all of the carbon monoxide to go into the attic and when mixed with the cold caused condensation(a lot of it). The level if CO2 in the attic was well into the dangerous level and was a threat to our health. Robert basically saved our lives that day. He then proceeded to facilitate the replacement of the attic insulation and mitigation of CO2 and mold. He took control of the whole project and has been our savior. If you have a need for any of his services you will be very pleased with him and his team.
Recent Reviews:
Best decision I've made in building my home. Do not overlook the opportunity to do business with this team!! Noah was on my job site within days of my initial call. I explained my needs and within one day I had a very reasonable quote in my email. The crew arrived on schedule and completed the job in the time frame they stated. Very, very satisfied!
Tumbarello Insulation did a great job installing closed cell insulation in my attic loft. I got seven different quotes for my project and it was an easy decision - they were trustworthy, cost effective, and easy to work with. They truly cared about the quality of the installation, answered all my questions, left everything nice and clean, and really filled in as much as they could with the foam. They run their own foam rig with their own crew, and they really know their stuff. I was really impressed with the results and wouldn’t hesitate to work with them again in the future. Highly recommended!
Noah, Erin, Bobby and Rob did a great job for us. After getting proper blown in insulation added to our existing attic, the hope instantly didn’t feel drafty. I highly recommend bringing your home up to r60 specifications. They also take care of military families. I recommend Tumbarello Insulation with enthusiasm.
Recent Reviews:
We couldn't be happier with the incredible service and product we received from Advanced Insulation! Jason shot us straight from the first moment we had him on the phone. He heard our problems, gave a recommendation, and outlined the process. We agreed and they delivered as intended! They removed our old, moldy attic insulation, sealed the attic to bring it up to code, and sprayed in fresh insulation. The transformation has been remarkable—our home feels so much warmer this winter, and we're all coughing and sneezing far less! Their team was professional, efficient, and clearly very knowledgeable about the process. It's made a huge difference in our comfort and overall air quality. Highly recommend to anyone looking to upgrade their home insulation! Thank you for the excellent work Jason and crew!
I couldn’t be more impressed with Advance Insulation Solutions. From the initial consultation to the final installation, their team was professional, knowledgeable, and efficient. Jason took the time to explain my options, answered every question clearly, and delivered exactly what they promised, no surprises, no delays. The quality of their work speaks for itself. After the insulation was installed, the difference in comfort and energy efficiency in my home was immediate and dramatic. The job site was left spotless, and they clearly take pride in their craftsmanship. What really sets them apart, though, is their commitment to customer service. Jason and his team were responsive, respectful, and genuinely cared about doing the job right. It’s rare to find a company that combines this level of expertise with such great communication and professionalism. If you’re looking for insulation done right, Advance Insulation Solutions is the team to call‼️ Top-notch work, fair pricing, and a company you can trust. Highly recommended!
Jason responded to my request for a quote immediately and had the numbers to me the same day. He spent time explaining why I was experiencing heat loss and what steps could be taken to lower my energy bill. He provided multiple insulation options for our home and because of his responsiveness we went with his company. They guys were quick, respectful and clean. They got our job done in a half day. My electric bill was cut in half so the investment into the insulation was well worth it, pays for itself almost. We especially appreciated the military/first responder discount. Jason was even nice enough to come out and help me troubleshoot another issue after the job was complete. I 100% recommend this company.
Recent Reviews:
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
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
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 $$
Recent Reviews:
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...
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.
Company has integrity and professionalism. As seem in photos job well done!
Recent Reviews:
I could not be more pleased with the work completed by ISID. From the very first communication with Jordan, I was impressed with responsiveness throughout our project. We had a challenging situation and they handled it with absolute professionalism. Rafael and Emmanuel did fantastic work and I wouldn't hesitate to recommend this company to anyone. I wish all experiences with contractors could be this easy!
After filling out the online form for ceiling crack repair and water damage repair, I received a timely response. I began a brief phone tag with Jordan, the project manager, but he made certain to get us connected the same day. He came and reviewed the project the next day and had an estimate that afternoon. We had the work scheduled and started within a week. The Drywaller was punctual, systematic, consistent, professional, clean, and attentive to our needs. He even suggested patching over an electric box for speakers that was unused. He did a very good quality job. I would absolutely call Jordan again should I have any additional drywall work in my home. I look forward to calling in a painter and enjoying the absence of the drywall issues.
I can not recommend Innovative Solutions Insulation and Drywall enough! My kids tore apart our unfinished basement walls leaving the insulation heavily exposed. The team came in and made it look brand new! They were quick to get me scheduled, attentive, professional, respectful, efficient, and made it a safe and enjoyable space for my family again. No question asked, they will be my only phone call for any drywall or insulation needs in the future. 5 stars isn’t enough!
Recent Reviews:
I have nothing but good things to say about Thermal home solutions, the owner Jim contacted me directly to make sure everything was going smoothly(which is very hard to find these days!!) I will recommend this company to everyone I know and hope that they will choose them for their home improvements!!!
Jim and Kevin were great to work with. They scheduled the job quickly as requested. The company that sprayed the foam insulation were prompt and did an excellent job. GREAT customer service all around!!
Had windows and siding done on our house. Great products and good customer service. The workers showed up when they were supposed to and everything looks great.
Recent Reviews:
Level Up Insulation was contracted by my pest control service, Saela, to mitigate a mice & rat infestation in my home's crawl space. Two technicians, Afren and Alberto, removed all the contaminated wall insulation and the ground moisture/radon barrier in the crawl space. They sanitized the crawl space, then installed new wall insulation and radon barrier over the ground. They bagged all the contaminated materials and disposed of it all without leaving a trace behind (they protected the basement living area and 1st floor hallways with plastic sheeting). Afren and Alberto were friendly and professional, and super hard-working. That job would've taken me a week, and they banged it out in half a day. The finished job looks amazing... clean, bright and fully sealed. I highly recommend Level Up Insulation, as well as Saela Pest Control.
I hired Level Up Insulation to top up the insulation in my house. Scheduling the estimate was easy, all my questions were answered, and the price was excellent. After approving the estimate, the installation happened within 2 days. The technicians from Level Up were very professional. Installation took about 3 hours and at the end, they walked me through the results. I'm very happy with the work that Level Up installation did and would definitely recommend them.
Level Up did a great job insulating our crawl space, which included spray foam in between the floor joists, new insulation around the perimeter, and new vapor barrier on the floor to cover the exposed dirt. They did a great job preparing the path to the project in the house with plastic and did a professional job. We'll use them again on the next project and recommend them to others who need insulation work.
Recent Reviews:
We have used Mucilli Brothers twice now and had great experiences both times. George and his crews are very professional, thorough and clean. Our 2nd house has an access to the attic in our master closet and the crew took the time to wrap the opening with plastic in a way that nothing in the closet got dirty. The Insulation portion was done correct with the cleaning and replacing the aid dams for the soffits, sealing penetrations and damming around electrical boxes for ceiling fans, etc. I would recommend Mucilli Brothers to everyone.
Super impressed by Mucilli Brothers insulation. I was referred to them by a coworker who also had a great experience. They gave a quick estimate based just on pictures/floorplan of our house, scheduled us quickly, were responsive and proactive with communication, and did a great job on the actual work. Thank you George and team!!!
George and his crew were top notch! They were quick to provide a quote and answered all the questions I had. It snowed like 12+ inches on the day of the install, and they showed up on-time, shoveled my driveway and knocked out all the work in under 2 hours! Plus they were very careful about not tracking snow/dirt into my home basically treating it like it was their home.
Recent Reviews:
Project Manager Tyler is great to work with. Crew was polite, professional, efficient and fast. There isxa noticeable difference in our upstairs now with the new insulation. We will use their services again in our rental unit.
We had Rocky Mountain Retro Foam do our living room on the main level of the house. Before we did our HVAC system could never keep up. When set at 71 the main level would get warmer throughout the day instead of colder. It would run so long our Ecobee would send us a message saying our system wasn’t working properly. Now with just one room on our main level done, our HVAC system can not only get the house down to the desired temperature, it actually shuts off once and awhile. I have attached pictures from our Ecobee home IQ. The picture are almost exactly a year apart, and I don’t think the foam had even fully cured yet. It’s pretty amazing to feel the difference and then have actual stats to back up what we were feeling. I can’t wait to get to he rest of the main level done and then start on the upstairs.
Crew was efficient and thorough and gave me good advice for an additional DIY step I could take to protect even further a problem overhang area. Immediate results made an old addition the same temperature as the rest of the house for the first time. Site was clean at the end despite a lot of drilling and surplus foam during the process.
These are the questions Denver 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 25 verified Denver contractors above for exact quotes.
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