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    Atticity

    4.9 (65 reviews)
    Closed 8:00 am - 7:00 pm

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    Services - Atticity

    Insulation inspection

    Insulation removal

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    David and team did good work to clean up my attic and install new insulation. I recommend them for your home.

    Lili E.

    We needed to change the insulation in the attic and remove old ducts with asbestos. Since the company is certified in removing asbestos not having to deal with 3 companies in one project was a plus. The owner, David was very responsive and professional. Work was completed safely, cleanly and on schedule. The HVAC people who installed the new ducts confirmed the quality of the work. They care about the customer even after the project is done. They came back in the weekend to fix an aesthetic issue. With the new insulation there is a major improvement in heating in our house. I highly recommend them.

    Attic
    Kristiin P.

    David is the most courteous and professional I have encountered in the construction business. He was very responsive in his communication and very timely. Surprisingly he also had the best price! He did a fabulous job the new insulation and even offered to clean up other parts in our attic. Recommend him and his team highly!

    Toni C.

    I have a renting property which has insulation problems for years. I'm glad that I called David for the service. Since there was only a very short time window to get the job done before the next renter moves in, I had to find someone that can guarantee to get the job on a very challenging schedule. David responded to my request really quick and he was able to provide a rough quote over the phone right away. David came on time and got the job done on schedule. I'm pretty happy with the job. I can see that they put the insultation as thick as they could. I ended up giving him another job to replace the entire HVAC venting and ducts of the house as well. I would definitely recommend David to my friends.

    Crawl space insulation and vapor barrier
    Manish A.

    I recently had AtticCity insulate my home, and overall, it was a positive experience. David was easy to reach and answered all my questions about the process. They insulated my attic and crawl space, and also installed a vapor barrier in the crawl space. The crew showed up when they said they would and finished the job on schedule. The pricing was competitive with other quotes I received. I would recommend AtticCity for insulation work.

    Remove the old insulation/dust/debris

    David helped me installed the attic insulation quickly and professionally with good price! They removed old insulation/seal all air gap/rodent proofing/install new insulation. David communicated clearly the process and completed the work in around 5 hours. They put plastic cover from entrance all the way to attic access carefully , also did cleaning outside in the front yard to remove dust produced by the vacuum, it is really great working with David!

    Attic after clean

    David is a good guy. He's responsible and did decent job. Im satisfied about his work. In the future, i will recommend him to my friends.

    crawlspace duct fix
    Thomas N.

    Sorry David, this review is long over due. David and his team did a fantastic job. He was very professional and I choose him because he was honest and willing to work with me. He was true to his word what he said he would do even though some things got complicated when the job started, he still delivered in the end. He really tries to satisfy the customer as long it is a reasonable request. Other quotes told me I needed radiant barrier for my roof and crawlspace duct needed to be replaced. But during David inspection he notice I already had the radiant barrier from previous owner roof install and the crawlspace ducting only need to be repaired and that would save me money. He is also certified or licensed to do asbestos removal so he would not have to contract other people to do it which would cost more money. I definitely recommend Atticity and would use them again if I had too. Their price was very competitive and doing business with someone honest and trustworthy goes a long way. Job completed - June 2024

    David and his crew were wonderful from start to finish. He was prompt in arriving at my house for his estimate, gave a fair price and completed the job as promised. He did a great job cleaning the attic, installing new insulation, rodent proofing and also replacing a heating duct return that had been damaged. I was so glad to have found David and Atticity and would call them again! Thank you!

    New R38 Insulation

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    Page 1 of 2

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    Review Highlights - Atticity

    David and his crew did a great job replacing the insulation and flex ducts in our attic.

    Mentioned in 39 reviews

    Read more highlights

    Universal Insulation

    Universal Insulation

    4.8
    (151 reviews)

    Many thanks to the Universal Insulation team for doing such a great job on my attic from start to…read morefinish. We purchased our home many years ago and didn't realize how much of a mess the attic truly was until Universal Insulation completed an assessment in preparation for a possible heat pump installation next year. We're so grateful to have found a company we could trust to do things the right way. During my correspondence with Marko, Marko arranged for an assessment to be conducted by Nicholas. From the initial assessment, Nicholas was incredibly patient in addressing all our concerns and questions -- especially since we are very "hands on" homeowners. Once the contract was signed, Ann promptly scheduled us for the next available appointment and provided clear, detailed instructions on how to prepare before their arrival. The meticulous process began with removing the old insulation and debris, vacuuming the attic floor, and sanitizing the space. The next step was ensuring the attic was structurally sound and ready for new insulation. Because of the care and attention to detail that Marko, Miguel, and Nicholas put into every part of the job, we ended up with a dry, well insulated, properly ventilated, and easily accessible attic. If you're looking for an excellent insulation company, I highly recommend the team at Universal Insulation, Inc. -- they are truly competent professionals who take pride in doing things the right way.

    Highly recommend these folks! Arrived when they said they would! Easy to talk to, answered all my…read morequestions, "got on" with the job. Finished the job in less time than originally quoted, excellent clean-up. Quite reasonably priced, especially for Santa Clara County, also included a credit for quoted work that didn't needed to be done.

    Element Home Solutions

    Element Home Solutions

    5.0
    (27 reviews)

    I had upgraded my gas furnace less than 10 years ago, but this time around, I decided to make the…read moreswitch to a heat pump. It's cut down my emissions and I get AC--win-win. I went out for four bids, and Element was the last one. The equipment and pricing were all over the place, and honestly, I was getting pretty frustrated by the time Ernest from Element showed up. From the start, he stood out. While others barely glanced at the attic, Ernest went straight up there and spent more time than anyone else had. When he came down, he pointed out two big things: first, my system needed increased airflow, and second, getting the old unit out was going to be a tight squeeze. I could tell he actually cared about the details. He recommended the smallest unit that had been bid so far, which surprised me. I brought up efficiency concerns because another model seemed better on paper. But Ernest explained that for our specific climate, heating performance mattered more--and the smaller unit he recommended was actually more efficient in that context. When I got Element's quote, it wasn't the cheapest--but it was the most complete. It included everything: permits, inspections, even replacing three ducts. There were no surprises. I had a few more questions before moving forward, and Ernest took his time answering every single one. Once I signed the agreement, their project management team was punctual and professional all the way through to the certification process. The whole install was done in a day, just like they promised. I'm more than happy--not just with the heat pump itself, but with the entire experience. Everyone I interacted with at Element was professional and easy to work with. Highly recommend.

    We moved into a new home last November that was substantially bigger than our previous rental…read moreapartment. We were much colder than we had anticipated, given both the increase in space and the antiquated (35 years old!) furnaces that it came came with. Worse, still, was the weighty PG&E bill that came through just a few weeks later. Ouch. As things started to warm up, we started exploring options to replace our 36 year old furnaces which we knew were a ticking time-bomb in the fear of having to house my Southern Californian in-laws who would not tolerate anything but a balmy 72. We spoke to 13 different vendors, based on Yelp searches and those little coupon books that we seem to get monthly in our mailbox. Element was one of those coupon book vendors but when I went to look them up on Yelp, I was pleasantly surprised. Ernest came out in spring and spent over an hour with us, measuring the size of our registers, inspecting all of our ductwork, and answering all of the questions I had about what kind of improvement we could expect. Then, we waited. There are a lot of decision points to make: should we replace our ducting, what kind of ducting should we get, heat pump or furnace, what efficiency furnace, AC or not? Half a dozen other projects happened over the summer and as the days drew shorter, I decided to go ahead and resurrect our furnace discussion. The benefit of waiting over the summer was that we discovered AC wasn't really necessary where our house is, due to the tree cover that keeps the house cooler. However, the air quality in the Lamorinda area was about as bad as anticipated (200+ AQI), with the now unfortunate annual wildfires. This, plus some consulting with both Ernest and our pest control contractor, helped us decide on: new aluminum ducting (rat proof!), a high efficiency furnace, no AC for now (but a coil so that we could easily install it later), plus some pretty heavyweight IQAir filtration. Unfortunately due to all of the supply chain issues, the price for our estimate went up by $2K or so since we originally reached out. That said, not installing central AC saved us $7K or so - so waiting was likely the right decision. Element's quote came in very competitively against other vendors, who were cheaper on the furnaces but more expensive on the ductwork. What I liked about Element (and Ernest's salesmanship) was the numerical and very professional way they approached the system design for our home and how duct sizing was based on solid engineering principles. I was a little wary about the duct work (it is not cheap) This professionalism carried through to the crew who came and did the install, and their office manager Mac. We had a few issues during and after the install - because this is the real world after all - and Mac and the team made sure to follow up on each of these. Our water heater went out and so we had no hot water for a couple of days. We weren't able to relight it ourselves and it turns out it needed a new ignition unit - the team at Element sent a technician over and a plumber when that failed. There were a few small cosmetic blemishes left over (marks on the wall, and some construction mess in our subarea) that they fixed immediately when prompted. We also were missing an overflow valve on the AC unit that caused inspection to fail, but they came out and installed that before scheduling another inspection which passed. So far, in two weeks of having this new heating system, we are very very happy. The house heats up from 62 in the morning to 70/71 much quicker than before. The system is about 1/5th of the noise of the previous system - with the new fatter ducts, there is almost no discernible "whoosh". The house heats evenly too - areas of the house that would get too warm before are now about right, and our living room with a high ceiling actually gets comfortably warm. The furnaces seem considerably more energy efficient too - using about 2/3rds the natural gas despite the fact that we typically run them for twice as long! Our electricity usage is a few kWh lower each day too. Overall, pretty happy with Element and their work. I wish this sort of project didn't cost nearly as much but hopefully we can stretch these furnaces another 35 years ;-).

    Attic Masters

    Attic Masters

    4.7
    (128 reviews)

    This is the very first time I'm giving less than 5 stars for a yelp review. I usually like to give…read morecompanies the benefit of the doubt and give them opportunities to make it right, but my experience with Attic Masters and Adam have been nothing but endless frustration. First, they didn't show up to our scheduled appointment on Nov 29, at 8AM even after I received 2 confirmation emails, and text reminders about the appointment (attached below are photos of the confirmations). I specifically chose this company over Attic Bros because I was told that they work on the weekends and complete jobs on weekends. In hindsight, I wish I would have just gone with Attic Bros from the start. Two guys came at 2:30pm instead on Saturday after I had called them at 10:30am about how no one showed up. The 2 guys only put up 2 films of radiant barrier and left at 5pm. On Sunday morning, the remaining workers showed up and "finished" at 2:30pm, however they didn't rodent proof my crawl space until I had pointed out the holes to them. They did it after I had pointed out the holes. Additionally, they never rodent proofed my the attic side vents. They rodent proofed the roof, sure, but I would have thought the side vents would be included (they didn't have a ladder to reach it so they didn't do it). I had to hire a third party to fix the holes/gaps on the side vents instead because Adam and his company didn't want to come back to fix it. I was told they'd call me back when they can schedule me in, but after a week I gave up and just hired another company. Also, they damaged one of my kitchen lights when they were doing work in the attic. Adam also said he would send someone to fix it and that it's "easy" but nothing ever came of it. The 3 stars I gave them is because the insulation looks decent and that they still came on Sunday to follow through on the project, but if they could lie to me about "fixing the side vents from the inside" who knows what else they may have lied about. I am concerned about this company's integrity. Also- Adam is rude and defensive on the phone, and doesn't really let his customers speak.

    We used Attic Masters in 2015 for an insulation job. They installed blow-in insulation in the…read moreattic and bat insulation in the crawl spaces. We have not had any issues since the ones that we dealt with during the initial installation. Fast forward to this week (Mar. 2026). We are in the process of getting quotes for installing a vapor barrier. During inspections, two separate insulation experts notified me that the batt insulation was installed incorrectly. The paper should be facing the floor rather than facing outward. See photo.

    Bay Valley Insulation

    Bay Valley Insulation

    4.6
    (41 reviews)

    Selected Bay Valley from 2 BayREN approved insulation contractors and a non BayREN contractor. The…read moreBayREN approved contractors generally offer better price because you get the additional rebate, which they will apply for you. Professional and efficient, the two installers were in and out in 2 afternoons. Added spray cellulose insulation to attic and exterior walls. The house has wood siding in front and stucco on remaining three sides. They were the only one willing to drill hole through the exterior wood siding in front and patch. They also paint if owner provides the paint. The other two contractors said they had to drill holes from inside the house (oh no, we had just patched out walls after the electrical work). So far looks like house is staying cooler in warm afternoons. We shall see this winter!

    Team of 4 guys they are experienced and know what to do…read more Joel-estimator,Guy-answers the phone, Tony and Henry do the insulation work. They are great team. I had my external walls insulated and they used cellulose to fill making 1.5 inch holes between the studs. Then they use a cork foam type backing to put in the holes as a vapor barrier and close it with stucco patch. Then comes the texture followed by primer. And if you provide them your matching paint they will color the patches too. They are nice and simple folks and easy to work with. Thanks I wonder why I waited so long to insulate the walls as the difference is noticeable and will save energy. They also help with rebates offered by state or federal.

    Chris's Insulation Services

    Chris's Insulation Services

    4.9
    (117 reviews)

    Beyond easy experience with Chris. My dryer suddenly started giving off a burning smell, which I…read moremistakenly attributed to the lint catch being overloaded. But even after cleaning it out, the smell wasn't going away. Then the vent started giving off either smoke or steam, and in a panic I immediately turned off the dryer. Thank God I didn't start a dryer fire. The second I shut it off and made sure everything was ok, I opened Yelp and searched for a dryer vent cleaner. Chris's Insulation came up, he had great ratings, he was super close by, so after calling a different service and going to voicemail, I called Chris. Chris picked up after the second ring. When I told him that I needed someone to clean our dryer vent and what had happened, he said he could come out either between 5:00 and 6:00 pm that evening or the next day. It was already mid-afternoon when I called, so I was surprised to hear him say he could still come out same-day, but I decided to have him do that since I was free and also still a little shaky following what happened with the vent either smoking or steaming. Chris showed up during the window he quoted and wasted no time getting to work. He started the second he arrived and was done within the hour. His pricing was incredibly reasonable and fair and so far, in the couple of weeks since he was here, we've had no issues with the dryer. Before he left, he also sent us a ton of pictures of what the vent looked like post-cleaning. Super happy and relieved.

    Professional service and they were able to come same day, which was the most helpful for me.read more

    Atticity - insulationinstallation - Updated August 2026

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