Find top-rated spray foam contractors and save up to 37% on energy bills
Compare 10 verified spray foam insulation contractors serving Thornton, Colorado, backed by 238 customer reviews averaging 4.5★. Whether you're insulating a new build, retrofitting an existing home, or upgrading attic and crawl-space insulation, these pre-screened Thornton 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:
Angel and his partner did an amazing job for me this week! He explained things clearly and even had the chance to upsell me but told me it wasn't really necessary. Not often you get that! Super fair price and excellent service. As a note: the day after our service it was over 100° outside and my wife thought it was "cold" upstairs. NEVER has that happened!
Angel and William did such a remarkably good job with the foam insulation job that if honestly frustrates me that other contractors can't do better. Within 2 days of first contact they were on-site to bid the job (a large barn with hard-to-get-to areas). I had a detailed quote emailed to me by the end of the day that was lower than three others. They worked efficiently and were flexible enough to increase the project scope when I asked. Each day they made sure every single item and surface was fully masked off and that the barn was left clean of insulation debris before they left. The job ultimately took a little longer than I expected but only because they were so meticulous in making sure each surface was getting the full depth of insulation that was quoted. The guys were friendly and able to work around other contractors in the same space. The barn is now easily 10 degrees warmer on cool days and probably 20+ degrees warmer as the snow is rolling in. Thanks for helping us get this big job done so well!
Angelo replied quickly to my request for an attic-insulation bid. He was less expensive than his competitors and was out in a couple of days. Really cared about his product, was highly professional, and did a great job with the work, then with showing me the work. From me, he's an A+.
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:
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:
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:
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.
Highly recommend Advanced Insulation Solutions. Jason gave me several options for my attic insulation project, that fit my needs. I was able to get on his installation schedule the next week. Augustino and Kenny arrived on time and completed the job in a timely matter. They had covered all of the floors and and when the job was completed, cleaned up and left the area as they found it. They answered any questions I had before and after the project. Five stars from start to finish.
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:
We had our basement and attic insulated. Dustin and his crew were fantastic from the initial visit and estimate until completion. His team was courteous and professional. Recently, we had issues with condensation in our bathroom. We were unsure what to do and when we contacted Dustin, he immediately responded and came to make sure it wasn't a problem his team had caused. It was not their problem, but he explained what is wrong in our bathroom, took pictures, told us what needed to be done and was even willing to help refer us to someone he trusted. We would positively refer him to anyone who needs insulation done. Lloyd and Darcy Thomas
The crew showed up on time and got right to work. They answered our questions, went over the process/expectations, and left our home clean! Highly Recommend!
They were quick , very communicative, and left the job site clean! They did a wonderful job and followed up with service as well!
Recent Reviews:
These guys absolutely exceeded my expectations!
Quick, clean and efficient with incredibly fair pricing!
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.
Recent Reviews:
Home and Garden show 2026! You may not want your most angry employee (Rachel) to operate your trade show booth. After grabbing a chap stick and being accosted and yelled at by the woman pictured, rather than calmly stating they were used as prized (cheap, but to each their own) I would never even think to utilize this business. If they, or their customer service are anything like the person they have at their booth, I would NEVER use this company! Hopefully they get happier hardworking people in their future!
I would give zero stars if I could. We met this company at the home and garden show and had them come out to provide a quote. I had to call 3 separate times to try to get the quote, each time the representative was not able to discuss and stated they would call me back in which they never did. I called another contractor and had a site visit and pricing in 2 days with install in less than a week. If you want good service I would look elsewhere.
These are the questions Thornton 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 10 verified Thornton contractors above for exact quotes.
Not finding the right fit in Thornton? Many spray foam contractors travel to nearby towns. These communities within about 60 miles all have verified contractors listed.