Find top-rated spray foam contractors and save up to 27% on energy bills
Compare 16 verified spray foam insulation contractors serving Fremont, California, backed by 1,675 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 Fremont 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:
I called Ahmad for a quote for rodent proofing my crawl space. Ahmad was one of the only people who did a thorough inspection before providing a competitive quote. His team was professional, clean, and they moved very quickly. They installed over 2000 ft of insulation and rodent proofed the entire house. I wish all contractors are as honest and competent as Ahmad and his team. Highly highly recommended!!
Ahmad was very responsive from the beginning of the process. He patiently answered all my questions and educated me about the different insulation types. He gave me instant and competitive quotes that included rodent proofing both attic and crawlspace and any gaps around the house. His crew is fast and they were in and out in 2 days. They sealed covered the work area properly and did not let any dust in the house ( to the best of their ability). During the work, there was a fixture in the kitchen that got loosened. It was incorrectly installed, but Ahmad got it fixed and only asked for final payment after it was re-installed. All in all, I highly recommend working with him. I have already referred him to our friends as well. He is genuine and easy to work with.
The owner is not only great technically but also very hardworking. From the first appointment, he’s well prepared to go into the attic to assess the house and the materials/hours of work required. On the work day, he and his team did a great job to seal all entries around the house. And he communicated well on the new opens/area he found, and why, we paid more to have his team to complete everything. Well trusted business in fremont!
Recent Reviews:
We couldn't be happier with the service from All State Insulation. From the initial estimate with to the final installation, the process was seamless. The crew was professional, prompt, and incredibly tidy—they used tarps and cleaned up everything before they left. We had insulation installed in our attic/crawl space/walls, and we've already noticed a significant difference in our home's temperature consistency and a reduction in drafts. I highly recommend them to anyone needing insulation work!
All State Insulation did a fantastic job on my home. They air sealed all the open spots in the the attic and installed new R‑38 insulation, and the results were noticeable right away. The temperature inside the house is much more stable now, and the overall comfort level has improved a lot. Highly recommend All State Insulation company for any insulation needs
I needed a professional team to replace the old insulation in my attic because it was almost useless. A friend recommended All State Insulation, and I’m really glad they did. The team was quick, friendly, and made sure everything was done right. They explained what they were doing and checked that I was happy with the work. My home feels much more comfortable now, and I can already tell it’s saving energy. I highly recommend All State Insulation.
Recent Reviews:
Great company Highly recommended 5 star….
Responded very quickly and very professional fantastic job
Great , would recommend !
Recent Reviews:
Jorge and team were exceptional to work with. The removed our old insulation, sealed the attic and added new fiberglass insulation, explained each and every step and went great lengths to do rodent proofing. And all it took was few hours. Jorge also came few months later to fix some of the gaps that the HVAC crew left in our attic. I highly recommend Ideal Attic for your insulation needs. Their price was the lowest as well among all other quotes.
I feel very fortunate to have found Ideal Attic Insulation to work on the attic and crawlspace of our newly purchased home. From the start, Jorge came to provide a free inspection, and he was extremely professional and thorough. He personally went into the attic and crawled into the crawlspace to check every detail. After his inspection, he gave us a very fair estimate with a clearly written and complete scope of work. We also requested quotes from other companies, but it became clear that Ideal Attic Insulation—and especially Jorge—was the most professional, responsible, and knowledgeable. Jorge even helped us connect with other reliable handymen for additional repairs we needed around the house, which we truly appreciated. Once our plumbing repairs were completed, we scheduled the attic and crawlspace work. Jorge’s team handled the attic cleaning, sealing, rodent-proofing and new insulation installation. In the crawlspace, they performed a full cleaning, rodent-proofing, and installed a new vapor barrier. The scheduling was quick, and everything was completed within three days. The workmanship was excellent—clean, organized, and very professional. We really trust Jorge and appreciate his honesty, experience, and dedication. I highly recommend Ideal Attic Insulation to anyone looking for attic or crawlspace services. We will definitely continue using this company in the future. Highly recommended!
Jorge is the best. My wife and I had contacted 4 companies, and by far Ideal Attic Insulation was the winner. With us it wasn't all about price, but quality, knowledge of the trade and experience. We had our old insulation removed when we replaced our roof. Yes, like lot of us when your roof is compromised you have issues with rodents. Once our roof was completed, we set our appointment with Jorge. He came out the following afternoon, and boy was it hot. He inspected our entire attic and came up with a game plan to vacuum and sanitizing our entire attic space. He took a lot of pictures and shared areas of concern with us. We had the roofer's comeback out and tighten up area that may have been able to be compromised. once these areas were tightened up Jorge sent out his crew to install mess wire and stray foam around vent pipes, etc. Jorges recommended we wait a few weeks to install the insulation to see if there were any signs of rodents. After a few weeks and weekly inspections by Jorge and his crew, there were no signs of pests. They installed the insulation, and we could not be happier. We highly recommend Ideal Attic Insulation. Don't waste your time looking for other insulation companies call ideal Attic Insulation and know you made the right decision.
Recent Reviews:
Leader Restoration did an excellent job with the mold remediation in our attic. They handled the removal and replacement of the insulation and thoroughly cleaned the framing. We were initially told that some of the framing might need to be replaced, but their team was able to properly restore it and help us avoid expensive structural work. Professional, knowledgeable, and honest throughout the entire process. Highly recommend Leader Restoration for mold remediation and attic restoration services.
We hired Leader Restoration for crawlspace mold remediation and had a great experience. Idan did a thorough inspection, clearly explained the issues, and provided a detailed scope of work at a very reasonable price compared to other estimates we received. The work was completed exactly as promised, and the crew was professional and efficient. Highly recommend Leader Restoration for mold remediation.
We had serious water damage in our kitchen after a dishwasher leak, and Leader Restoration did a great job helping us through it. Idan, our project manager, was especially helpful — he explained everything clearly, stayed on top of the repairs, and made a stressful situation a lot easier to handle. The crew worked quickly and professionally, and we really appreciated how smooth they made the whole process.
Recent Reviews:
I recently had an attic inspection done by American Attics, and I couldn’t be more satisfied with their work. During the inspection, they discovered old air ducts and outdated insulation. Sam was incredibly helpful throughout the entire process—he guided me through the replacement and made sure everything was done properly. The team was professional, efficient, and did a great job. Highly recommend American Attics if you need attic services!
Excellent job, American Attics!! I have met several companies and American Attics was my choice. Mr. Sam Naib, the owner came to the site for detailed explanation and I felt confident that he will deliver what he has promised. On the day of the job, 3 young crew members showed up on time and worked tirelessly the entire time to complete the job on time. There was one minor issue they forgot to do but Sam arranged to fix it in a timely manner. I highly recommend Sam and his team to care for your precious home!!
My old house was extremely inefficient, and after contacting several contractors, I found Sam from American Attics. He scheduled a free inspection and conducted a thorough assessment of my attic. What truly impressed me about Sam was his honesty, attention to detail, and deep knowledge of insulation and home efficiency. Sam and his team replaced the attic insulation, completed rodent proofing, and installed a brand-new air duct system. His crew was professional, hardworking, and respectful throughout the entire process. Just a couple of days after the job was done, I noticed a huge difference-my house feels incredibly comfortable now, and the airflow is much improved. I still can't believe the transformation! I wholeheartedly recommend American Attics for any home insulation, rodent control, or ductwork needs. Thank you, Sam and team, for the amazing work!
Recent Reviews:
Greenshield deserves 5 stars. 1. They are very flexible to work with. 2. Sounds professional throughout the project. 3. Keep up to their promise. 4. Workmanship is excellent: I replace my attic insulation and air duct system to help me with my allergy problem (I remove insulation, next install new HVAC system, finally install insulation. I have abestos removal, so this is the best sequence for me.) - They clean very well. Using negative pressure vacuum, they suck and remove all the junk, blown in, batt and left nothing behind. I personally went up to inspect their cleaning after they were done. (I pay extra attention to the cleaning process because I don’t like the musty smell of an old house. I have allergy, so air quality is important to me. They also sprayed to disinfect the attic.) - Installation is very good. They put back brand new thick R38 insulation beautifully. They reach even the furthest corner. Every part of the attic is covered. 5. They stand behind their work. I am glad to deal with Greenshield. I have no headache or hiccup in the entire process. As a regular home owner, I have zero knowledge prior to this. 6. They have rebates, so at the end their price is competitive. They do all the rebate for me. I shop at many other places and finally decided to go with Greenshield. My recommendation just go through Greenshield in the first place and save your time. They give you the price upfront and no need for negotiation like other contractors/company.) Due to the rebate, there will be an inspector from CA Energy Program coming to inspect to make sure it is done correctly and up to code. ( I have a piece of mind knowing their work has QA from a government agency.) 8. Usually old house has aging sheetrock and especially in bathroom due to moistures build up over time. It is very easy to crack/break sheetrock and to be fallen off from the ceiling. You don’t want to hire a handyman or no name contractor doing this job. Finally, the biggest win here is you don’t have headache dealing with contractors, and you know you can trust them to install insulation with good workmanship and use quality material. P/S: Greenshield did all the rebate application for me. Inspector came 3 days they finished the job. My rebate was approved within a week after the insulation. I was surprised how quick and easy the rebate process was.
I'm pretty happy with the insulation work. The room above my garage had cold floors so Greenshield punched holes on the garage ceiling drywall, blew in several bags full, and patched up the holes and cleaned up everything afterwards. They showed up on time, did very clean work, was very professional and most importantly the outcome was great. The room floor is no longer cold and the house is better insulated than before. The price was very competitive and they knew exactly what to do. Highly recommended.
I had Greenshield do R-44 blown-in insulation on my attic after getting a heat-pump HVAC installed (by a different contractor). It takes a couple of hours and they have several people working on a single house at one time. All of them, especially Ahmad and Dave were very professional. They prep your place and clean up after also. They have the process down pat and it seems like they've been doing this for a long time. This appears to be confirmed by their years in service in the bay area. They are also in contact with BayREN which provides Bay area rebates for green improvements to your home. R44 is the minimum required to qualify for the BayREN incentive. They handle the inspection and submitting of this rebate and all you have to do is wait for your check back. The price is reasonable and the work is definitely high quality. Because we have a newly installed heat pump with a smart thermostat we can quantitatively say that the R-44 blown in insulation makes a measurable difference into how much our heating system is running. I'm looking forward to seeing if there are improvements for the AC during summer as well. The insulation is definitely worth it for saving a few extra kwh if you have a heat pump. I assume a similar effect will be observed if you are using natural gas. If you are considering some energy efficiency improvements to your house (esp. considering the absolute massacre that PG&E is putting us through), attic insulation is one of the best bang for your buck projects you can do. It's also the most minimally disrupting. Plan for a couple of hours and have space available for them to move around and you should be good. Ahmad is very knowledgeable and very accommodating to any requests you might have. I recommend at least calling him to gain some of his perspectives in your next home improvement project. I added a photo of one area that they added insulation in. The white rectangles are how they measure the height of the blown in insulation. I confirm that at the minimum they reach the required level and in some areas exceed the thickness they promised. They also use spray insulation in some other gaps in our attic.
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:
Highly recommend this company to anyone looking to have their attic cleaned up and re-insulated. We were dealing with HVAC running constantly and still unable to cool down the house effectively. Oumar visited for an initial inspection and came back with a bunch of photos from the attic. He walked us through all the various options we could benefit from, and left us with a competitive quote, without ever being pushy. On the day of service, Dani and his team were extremely professional in their job. They took care of a bunch of rodent mess in the attic and sealed a lot of rodent entry points. They took care of every small task I asked them to do, and left the whole house cleaner than they started with. Attaching some before and after photos for reference. Even though the HVAC still runs constantly, at least it is able to keep up with the heat and bring temperatures down. Just go for them!
Attic Elite team has done a tremendous job at our place. Looking at the before and after picture clearly justifies the amount of effort they had to put in to get things done. They cleaned up the attic and crawl space really well and worked their way with ducts and insulation in the best possible manner. Omar is really helpful in understanding our needs and gave us the best estimate in market which we couldn't refuse. Highly recommend to consult the team for their best services.
We hired Attic Elite to clean and rodent-proof our church attic, and overall we are very pleased with the experience. Although the crew arrived later than expected, they stayed until the job was done and made sure everything was completed properly. Our attic had been in poor condition for a long time—it was very dirty, dusty, and there were several openings that needed to be sealed. The team worked hard despite the difficult environment. They cleaned thoroughly, removed all the mess, and sealed the holes with care to ensure rodents won’t be able to get back in. It was not an easy project, but they handled it professionally and left the attic in excellent shape. Now our church can use the space with peace of mind, and we really appreciate their effort and attention to detail. Thank you, Attic Elite, for helping us restore and protect our church attic!
Recent Reviews:
We went with Remove, Seal, Sanitize old insulation in effort to identify if there was a Termite swarm. We figured we’d need one day for termite inspection and a separate day for a termite treatment. The day after Attic Pros we had Bongiorno termite inspection come out and he went into the attic and there was no swarm identifiable all clean. Attic Pros did the complete removal and everything was visible and clean. It was cold at night and we didn’t wanna wait for our pre-scheduled couple of days out so I contacted Attic Pros and they came out the next day. Three guys installedR38. Bats without paper backer minimizing mold- they did an excellent job. All of our light was sealed. The hatch got new layer of bubble wrap insulation. The Attic vents had chutes installed allowing fresh air interchange. Can feel the difference- absolutely a warmer house. Thank you Attic Pros. Also Attic Prod had low cost to many other HVAC companies that just farm it out to subcontractors. Highly recommend Attic Pros.
I was able to self schedule an appointment within 2 days. Rabi was very professional and clearly communicated both the issue and the plan for resolution. They were able to complete the work within a few days. Their price was competitive. The team arrived between 10 am and worked all day to clean my attic, close all access points, and install the new insulation. They worked all day until 6 pm. They were very pleasant, answered my questions, explained things well. The process was pretty quiet so I was able to work at my remote job while they worked. They left everything clean in the crawlspace and took all garbage with them. I did not enjoy having creatures in the attic but they made the process of getting rid of them as pleasant as possible.
This is an excellent Company: They are professional, caring and thorough in their work. They took before and after pictures which was a great help. They removed rats, mold, asbestos from the attic. They removed the installation and replaced it with new. They sealed areas where the rats could have entered. They set traps and so far no sign of rats. They left my house clean. I have confidently referred you to my neighbors. Thank you.
Recent Reviews:
This company has great tenacity and work ethic I would 100% refer someone to their services as they are the best in the industry. Don’t look any further, go with Eagle Insulation they will take care of you.
The very best experience, friendly staff , excellent service,highly recommend.
Thank you the insulation is amazing great job guys
Recent Reviews:
I recently had Atticare come out to clean and insulate both my attic and crawlspace, and I can’t say enough good things about the experience! Sean was my technician — super friendly, on time, and clearly knew his stuff. He showed me photos before and after, explained everything in plain English, and made sure I understood exactly what was being done.
I recently had Atticare come out to my house last year to remove old insulation and then lay down new insulation along with rodent proofing the attic. A little over a year later Rats were still getting into my Attic and even though my warranty had expired Attic care was nice enough to send out their engineer Kyle to address the issue. Kyle spent several hours at my house today to do a thorough inspection and rodent proofing of any access areas were the rats might be getting into my attic. Kyle also repaired my air ducts the rats were chewing, cleaned up the attic of any droppings and completely sanitized. Very happy with the follow up work Kyle was able to complete today.
I recently used Atticare for my home in Pasadena, and I can honestly say it was one of the best home service experiences I’ve ever had. The team showed up right on time, explained the process in detail, and got to work right away. They removed the old insulation, cleaned and sanitized the attic, and installed fresh insulation that made my home feel instantly more comfortable. What impressed me most was how thorough and professional they were. They didn’t just do the job—they also sealed entry points and made sure my attic was protected for the long term. It’s such a relief to know my home is cleaner, safer, and more energy efficient. I highly recommend Atticare 5 stars all the way!
Recent Reviews:
Overall we had a great experience! Thorough inspection, friendly personality, good price and effective at catching the mouse at our house. We recently had a mouse gotten into the house and were extremely concerned with a little one at home! Once I reached out, David and Francisco came in next day, thoroughly inspected for any openings, and set up traps that caught the mouse in the same day! They then came in next day to help fill in any gaps from the outside with wire meshes + concrete for holding the mesh in place. They also filled in gaps from the inside at the attic and in the kitchen to prevent any more rodents from coming in! So far we haven’t seen more! But if we do, we got a multi year warranty that gave us a peace of mind!
Atticali did our R-38 spray foam insulation. From the free estimate to the pre-visit and installation, everyone at atticali was on-time, professional, and respectful. They were very quick to reply over text, email, or phone if there were any questions and communication was super clear. It was great working with them and will work with again when the time comes.
Isaac from Atticali was very professional and worked with us until the end of an infestation problem. We are grateful for his committment through the process.
Direct: (510) 477-9380
Recent Reviews:
Martin from Alcal installed new garage doors and I am really happy with the service. After few weeks, we found some minor issues which he came back and fixed. Will definitely recommend.
Great roofing contractor, I used to work there for 8 years
Awesome service nice people
Recent Reviews:
Awesome work!! Super friendly crew!! Would definitely recommend to ALL friends and family!! No hiccups throughout the entire service!!! 10/10 in my book!!
This company did the insulation for our home last year. During the inspection, they pointed out that the bathroom vent was leaking in the attic. They fixed the leak and did great job on installation. Insulation was also rebated by PGE with tax deduction on co-pay. Our heating bill went down. Definitely recommend this company.
Elite Energy installed attack insulation in my home. They are highly professional and have provided outstanding service. Staff is very courteous and did through job. They even checked all the appliances for gas leaks and burn quality. I highly recommend Elite Energy Efficiency for insulation and other services they offer.
Recent Reviews:
Super professional and considerate. I didn’t have any work done, because Joel came out and ascertained that I already had insulation, albeit low functioning. None of the condescending contractor stuff I sometimes get. Good communication, showed up on time, removed shoes in the house. They were recommended by a friend as the most affordable.
Hired them to replace attic insulation. We had some unusual circumstances and a huge time constraint and small windows to work within and Guy was able to work with me to get it done. Their quote was competitive and hard to beat, their communication was clear and they were unbelievably professional and hard working. They also offered and set up the PGE rebate for the insulation. 10/10
Best work best product best people #1
These are the questions Fremont 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 16 verified Fremont contractors above for exact quotes.
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