Find top-rated spray foam contractors and save up to 27% on energy bills
Compare 6 verified spray foam insulation contractors serving Napa, California, backed by 145 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 Napa contractors handle both open-cell and closed-cell spray foam. Homeowners here typically cut energy bills by around 27% — 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 Hot-Dry.
Recent Reviews:
As a contractor you're always looking for the best supplier of insulation, someone who can provide you with competitive prices, hardwood and quality. Vortex insulation is the best option! Their office manager Mike made everything so easy and the owner Luis and his team installed it all right away and perfect. These guys are the best insulation company in the whole Bay Area!
These guys are the best! Extremely quick service and a true dedication to their customers. I had a complicated request about exposed beams and they worked nights and weekends to make my vision come to life and stick to their original date. Would recommend them 5,000%. Great value, great quality, great service!
We hired Vortex for a ceiling and wall insulation. The service provided by Vortex was excellent, fast and their employees were very respectful and professional. Price was very reasonable. We recommend this company for any insulation needs. Overall experience was good. Customer service at all levels was excellent. We give this company 10 plus stars.
Recent Reviews:
Insul-Techs were hired to insulate my house. The scope of work involved insulating my walls, attic, and crawl space. The team installed different R value fiberglass insulation in the attic, walls, and crawlspace. They also installed spray foam insulation in one of my vaulted ceilings as shown in the pictures. I also got my garage walls insulated so that I can use that as a gym year round. They did an amazing job and after they were done with the insulation, we felt the difference on how cooler the house felt even when it was really hot outside Chris helped us with the scheduling and was a delight to work with. They are a hard working team who catered to all our requests and did everything to ensure we were satisfied with the job before they were done. Thank you Insul-Techs!
I was referred to insultech from a respected contractor. Luis came by for an estimate. During the inspection i was given options on the types of insulation and the insulation factor of each method. After further review of other insulation companies non were as professional in explaining the process or the materials used, and most of all they were much more expensive for the same work being chosen. The techs came in completed the job with the utmost respect for property. Communication with Luis and the front office was effortless and the response was done in a timely fashion. The insulation factor coupled with the mini split for cooling. What a difference. Customer satisfaction comes first. Great job InsulTech.
I recently had Insult Techs replace the insulation in my home, and they did a phenomenal job! The difference it made was immediate and noticeable. Their customer service was excellent from start to finish, and their pricing was very competitive compared to other companies I looked at. Luis and his crew were professional, efficient, and respectful throughout the entire process. It was truly a great experience, and I highly recommend Insult Techs to anyone needing insulation work done.
Recent Reviews:
Miquan and his crew were a delight to work with. They were knowledgeable and completed the work in a very professional manner. Their quote was very competitive and they delivered exactly what they promised. Anyone considering re-insulation should jump at the chance to use there services. I am a very happy customer.
My husband and I are impressed with their responsiveness to all my questions and quality of their work. We did not have insulation in the house and needed it installed asap in our exterior walls due to miserable overheating in the house. They took good precautions to cover the floors and furniture, took their time to do the job right, finished everything in the estimated time frame, and took care when cleaning up. They just left and we already feel the difference in temperature. We are very happy and totally recommend this company!
Excellent work by Miquan and his team! They completed attic insulation, spray foam for my loft, and full duct replacement. Miquan was very knowledgeable, took time to explain what my house needed, and was always prompt with responses. The team was extremely professional throughout the project - respectful of my home, arrived on time, and maintained a clean work area. They actually finished the job ahead of the promised timeline, which was a pleasant surprise. Quality workmanship throughout and I’m already seeing improved comfort and energy efficiency. Highly recommend for insulation and ductwork services.
Recent Reviews:
I was scrambling to find a foam insulation installer on a project We needed done pretty immediately. Got in touch with Glenn from TruTeam , and he was on it. The team came out fast. Got us sprayed up and cleaned up the job site thoroughly. This was my first time using foam insulation and I had a ton of questions, and Glenn was happy to answer all of them. Looking forward to working with true team again in the future
perfect staff and there unloading time is 12 pm to 2:30 pm.
Professional team.
Recent Reviews:
Transparent and fair pricing. Easy to schedule and prompt! Randy & Kerry (sp?) were fantastic and took pride and care in their work and it really showed. They were efficient, clean, kind, and overall really a pleasure! Strongly recommend!!
Estimator Cruz was professional, on time, excellent with communication and patient with all my questions and explained my options very well. Thank you Cruz! Tom and Jose who came to install my insulation where very professional, clean, on time and did an excellent job! I highly recommend Coast Building Products!
Coast was contracted to insulate my entire house remodel. The guy's who did the work were fast, efficient and professional. Many months later, when I discovered an area of the crawlspace that had been overlooked I contacted CBP to let them know. Coast wasted no time coming back to make things right. Impressive!
Recent Reviews:
We recently had our house rewired and the company doing it subcontracted with ace insulation to remove the attic insulation and blow it back in after. I was impressed with the care the workers took to clean up afterwards and to lay down protective material to protect our floors. They were polite and did the work well. I'd recommend them.
This is where I work excellent customer service fast friendly employees go Ace
Great service!
These are the questions Napa homeowners ask most about spray foam cost, R-value, and open- vs. closed-cell foam — with context for local pricing and roughly 27% typical energy savings. Compare the 6 verified Napa contractors above for exact quotes.
Not finding the right fit in Napa? Many spray foam contractors travel to nearby towns. These communities within about 60 miles all have verified contractors listed.