Find top-rated spray foam contractors and save up to 37% on energy bills
Compare 7 verified spray foam insulation contractors serving Longmont, Colorado, backed by 151 customer reviews averaging 4.8★. 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.
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:
Great group of people!! Very pleased with the knowledge and ability of the staff. Would def recommend!
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!
Great people, good service, excellent communication. i recommended this company
Recent Reviews:
Recent Reviews:
Jovanni was great. He showed up at the scheduled time and was clean and professional. Would recommend to any homeowner who needs any work done around the Longmont and front range areas.
Gio and his team were awesome to work with and they did a great job turning the gross garage of our newly bought home into a space we’re excited to paint and make usable. Trust US was punctual, professional, communicative, and completed the work in a timely manner. I wouldn’t hesitate to hire them again! This page isn’t letting me add photos, but trust me, the moldy 30 yo insulation and non-finished walls are now freshly insulated, actually in place, and ready to paint!
Communication was very good. They set a date and showed up just as they said with no delays. The work that was requested was done in a timely manner and I’m very pleased. I will use them again if I have another opportunity.
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:
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!
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!
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
Recent Reviews:
USA Insulation was easy to work with, there was no high-pressure sales techniques, and Kelly was super responsive to questions I had after quotation. The price was a bit higher than other comparable solutions like RetroFoam, but I am pleased with their service and professionalism of USA Insulation. I noticed a difference pretty immediately where they did the blow-in insulation in the attic. Can't say for sure how well the injection foam insulation is working in the walls, but I figured it certainly couldn't hurt, and I do think it's helped to reduce noise pollution from outside.
We are so happy with the new insulation. Already it has diminished outside noise and we were able to turn the thermostat down 3°. Nice and cozy in here now and in the garage it is so warm now. The staff from beginning to end have been absolutely wonderful and it was a great experience to work with them. Very pleased and very happy.
This is my first ever review and I want to thank USA Insulation for the hard work insulating my crawl space in Firestone on Wednesday 08-13-25. Your guys did a great job under challenging conditions; your crew kept in constant communication and worked hard to achieve the goal. I appreciate their commitment and professionalism.
Recent Reviews:
Cole and his crew did an amazing job insulating the rim joists on our custom log home - far above and beyond what I expected!
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.
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.
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 7 verified Longmont contractors above for exact quotes.
Not finding the right fit in Longmont? Many spray foam contractors travel to nearby towns. These communities within about 60 miles all have verified contractors listed.