Having our old 1930 house insulated has far and away been the best investment we've made in our…read morehouse. We've lived in the house for over 40 years and were used to sweaters and sweats in the winter and during our hot days spending more time in the cooler downstairs. We now leave the thermostat set at 64 for a low and 74 for a high and the heater rarely goes on. Today (9/9/2026) we think the AC might actually go on later today. Yesterday the house never even reached 74. We had building efficiency do the insulation almost 2 years ago and have gotten so used to our house being in a comfortable range all the time we rarely even think about it. This latest heatwave has reminded us of how glad we are that we did it and that we should give them a plug again! The process itself is fairly disruptive but doesn't take too long and Building Efficiency was very profesional and helpful in minimizing the disruption. Our only regret is that we didn't do it long ago.

Building Efficiency evaluated the property and educated us thoroughly before providing a…read morecompetitive to install a heat pump and water heater. They communicated well, kept a clean work site, and the staff was professional and efficient. We've been very happy with the results.

I started to hear little pitter patter footsteps and gnawing sounds at 5 am, and on day 2 of this,…read moreI messaged Attic Crew. They sent someone the next morning for an assessment and got us scheduled right away! In the interim, they gave us recommendations to deter the rats, which worked. Carlos and his crew arrived on time and finished quickly. The price was reasonable (honestly, on the cheaper side yet the quality and professionalism was great!). There was an issue with a short circuit because a rat chewed through the insulation that we didn't notice until the weekend, but Carlos responded immediately and came over to fix the issue. We are so grateful to Carlos and the Attic Crew for helping us with rats in the home, helping us feel more confident about keeping them out for the foreseeable years, and for all of their professionalism, knowledge, and expertise! Would definitely recommend!

We worked with Jay, Andres(?), and Angelica. They really went above and beyond to help educate us…read moreabout the process of installing a moisture barrier and all the factors that go into successful rodent abatement. The communication was excellent, even on a holiday weekend I got called back within an hour of reaching out with questions, which I certainly did not expect! They arrived promptly for appointments and were thoughtful about avoiding tracking dirt into our home. They worked with us to customize their work to our coastal climate and were very transparent about exactly what materials they would be using (all top of the line, industral-grade!). I have pets and toddlers and they took my concerns about chemical disinfects seriously and offered several options to make sure I was comfortable with what was used in our home. They really seem to take pride in their work and enjoyed sharing before and after pictures to demonstrate all the improvements they made to our crawl space. I could not be happier with my choice to hire them, and plan to work with them again when I'm ready to replace my attic insulation.

Carlos and his team are great. I was tired of sweating in my hot garage and sent a yelp request to…read moreCarlos. He called me back in 20 minutes (after they were closed). He asked some question about my insulation needs, we agreed on a reasonable price, and he said he could have his team there the next morning! The installers arrived on time, were super efficient taking only a couple of hours, and cleaned up everything like they were never there. I went into the attic to see the results personally (they did send pictures) and the quality of the install was great. Carols is a straight shooter and his team are professional. I would use them again.

Carlos' company is fast and efficient. They came in at 8 AM and was finished by 1 PM to spray foam…read moreabout 600 ft.² of my garage roof. You can tell they pay attention to detail because the garage was left cleaner than what I originally left it as. For my experience, many contractors tend to leave a mess behind sometimes for their customers which can be frustrating. For my research with close cell spray foam there is definitely a technique behind it for proper installation, and I am pleased with what I see. I did expect more fumes from the spray foam, but surprisingly the product they use has minimal smell to it.

We were initially told by another HVAC company that we needed to replace all of the air ducts and…read moreinsulation in our attic, add insulation in the rafters, and address rodent droppings in the crawl space. When Elmer came out, he took about 30 minutes to walk through the house and gave us a completely different--and much more reassuring--assessment. He identified entry points where rodents were getting into the crawl space, explained that the air ducts did not need to be replaced, and instead recommended insulating the rafters, reinsulating the attic floor, and cleaning and reinsulating the crawl space. He also suggested installing an attic fan to improve air circulation. Throughout the visit, he was straightforward, knowledgeable, and very approachable. We decided to move forward with the attic fan. Umar updated the contract promptly and even came out personally to help program the fan and connect it to my phone. Their team worked tirelessly over four days and did an excellent job. They were professional, detail-oriented, and left the house clean when they were done. We enthusiastically recommend Insulation Alliance. Thank you, Elmer, Umar, and team! ST, Redwood City

I discovered this shop on Yelp after it recommended several local businesses. I had multiple quick…read morequotes, but Umar provided the greatest response and cost, as well as a quick two-day schedule on Sunday, which is my day off, so he saved my days. His worker blew insulation through the holes he made in the walls. and expertly completed within four hours. Everything was cleaned, vacuumed, and dust cleaned after work. Umar emailed me the certificate letter so that I could show it to the City Inspector. Thank you, Umar, and your workers for being professional and responsible. You deserve to have the very best business.

Phenomenal experience from start to finish! I submitted an…read moreonline request for an estimate and Emily got back to me almost immediately, letting me know that Joe was out on a job but would contact me later. About 30 minutes later, Joe texted to say he would call at 2:00 -- and he did! We arranged an onsite estimate, and from the moment I met Joe, I was impressed. He listened to what I was trying to accomplish, answered all of my questions, explained my options, and made me feel both heard and informed. He also had a newer team member with him whom he was training, and I was equally impressed by the patience and care he showed in teaching him. I received three bids for my attic insulation project, and I chose SDI hands down because of my experience with Joe. From there, Alfredo was terrific to work with. He worked with my schedule to find a day that worked for me and was incredibly easy to reach by phone or text whenever I had a question or needed to confirm details. On installation day, Sergio, David and Miguel were fantastic. They arrived, got everything set up and went right to work. They were careful with my home, incredibly thorough, and when I had questions, Sergio took the time to come down, talk with me and then personally went into the attic and took a video so I could see the completed work. And when they were finished -- no muss, no fuss. Everything was cleaned up beautifully. They even touched up the paint around the attic access where they had been working. Other than having a newly insulated attic, you wouldn't have known a crew had been working in my home all day. The entire SDI team -- from Emily and Joe, to Alfredo, to Sergio, David and Miguel -- was responsive, professional, knowledgeable and genuinely pleasant to work with. This team was amazing, and I would absolutely recommend SDI.

A very positive experience! We just has SDI insulate the exterior walls of our 1960's-era Belmont…read morehills home, and I was very impressed with the work they did. Their communication with me was excellent, and everyone I interacted with was extremely professional and very skilled in their respective tasks. Big thanks (!) to Joran, Sergio, Gene, David, and the other crew members whose names I didn't get. TY! I feel very comfortable recommending SDI's work - they did what they said they would do, and they did it quickly and professionally! Their estimate was competitively priced; it was neither the cheapest nor the priciest., but all things considered, SDI seemed to offer the best value for our money. I'm also very pleased with the results of the insulation! We had R15 fiberglass blown into our exterior walls, and even after just one night I can tell the house is much quieter. Today's outside temp has been in the mid-50's, which is chilly for early May, so I'm able to write this review with oddly good timing: new insulation works, lol! I'm now very eager to see what it does in the summer heat, which was our main reason for having it blown in. All in all, I am very pleased with the SDI did on our home and feel quite comfortable recommending their services to other homeowners.

Wilson did and super exceptional job. He is so nice and approachable. He explained everything…read morebefore and after. Awesome job! Thank you. We definitely recommend the service.

Erick and his team were great, very professional. They worked quick and kept the house cleanread more

We first called Attic Kings about 4 years ago after heavy rains led to rats getting into our attic…read more They caused a huge mess, and I was especially concerned about the urine, droppings, old insulation, and fiberglass getting into the rest of the house. Moshe came out right away, inspected everything, and gave us a very reasonable quote to seal all of the entry points, clean and sanitize the attic, deodorize the space, remove all of the old insulation, and eventually replace it with new insulation. One of the biggest concerns for me was cleanliness. We had just installed brand new carpet upstairs, and the attic entrance is right there. Moshe covered everything in plastic and actually created a contained tunnel from the attic all the way downstairs and out the door so the old insulation and debris never traveled through the house. That made me feel much more comfortable about having the work done. Moshe and his team were fast, clean, and efficient, but what I appreciated most was how thorough Moshe was. He took the time to explain everything, sent us detailed photos, and never made us feel rushed. Because we have two attic spaces that connect along the roofline, Moshe did not just seal everything and immediately put down new insulation. He left traps in place and came back for several weeks to make sure there were no rats still hiding somewhere or finding another way in. Only after we were all comfortable that the problem was completely resolved did he install the new insulation. I really appreciated that because the last thing I wanted was to spend money on new insulation and have it ruined again. 4 years later, we still have the trap up there and have not had another rat problem. Recently, we had a completely separate issue with yellow jackets that made an opening near the roofline and got inside the roof area. After pest control handled the yellow jackets, I called Moshe just to ask whether the opening needed some kind of special repair. He came out the very next morning, walked the perimeter of both rooflines, found a few small areas that had shifted or opened over the years, sealed the area where the yellow jackets got in, and even went back into the attic to make sure everything was still secure and there was no evidence of rats. There wasn't. What really impressed me is that this was years after the original work, and he still came out as a courtesy to check everything. That says a lot about the kind of person he is and how he runs his business. Another thing I really appreciate is that when you call Attic Kings, you actually get Moshe. You are not dealing with an automated system, a call center, or a different person every time. He is very hands-on, and the people he brings with him have always been professional, respectful and clean. We even scheduled the original work while we were away from the house, and I felt completely comfortable trusting Moshe and his team in our home. His pricing was competitive, the value was excellent, and most importantly, the work has held up for 4 years. It is getting harder to find small businesses where the owner still answers the phone, shows up personally, stands behind the work, and cares about maintaining a relationship with customers long after the job is finished. Moshe is honest, dependable, and has a lot of integrity, and that goes a long way with me. I would absolutely recommend Attic Kings.

We found Attic Kings through Yelp, and had a really great experience! Ofek and Moshe were…read moreresponsive from the start, which made the decision easy after their consultation. A few days after we met and I signed the contract, the team came out to remove old roof debris left over from a recent reroofing, removed our home's original insulation, and installed fresh batt insulation in both the attic and crawlspace. They also added rodent proofing throughout the attic while they were at it. About a month later we heard critter noises, so I texted them and they came out to inspect. He didn't find anything in the traps but reset them to be safe. Sure enough, something took the bait because we heard it go off! Jose came back shortly after and discovered 2 mice (thankfully no rats), found a gap where the roof met the garage and sealed it up. He ran an ozone generator as a precaution for any smells. A couple weeks after that we heard faint sounds again. Jose returned, found one more entry point, sealed it, and since then there's been total silence! I really appreciated how thorough and persistent they were even after the job was technically done. Solid team, fair price, and they stand behind their work. Highly recommend Attic Kings!

Did a complete Attic clean up and R44 blow in insulation & in wall insulation for an old 1959…read morehouse. I would say, they did an excellent job - Starting with Jeremy, who accommodated my schedule for preliminary inspect and gave me a on the spot quote. Elder and the guys did an excellent job in covering up the entire house and finished the job in 2 days. My house had no insulation in the walls- to very less in the attic. After the insulation my Heat as well as Cold is retained inside the house. Heat turns on once in a 24 Hr cycle vs multiple times in an hour previously. If you are thinking of in wall insulation, it's totally worth it. The quote was the most competitive and they were very flexible. I am still closing out the multiple holes in the wall, will take time as i prefer to do it myself- I had plans to paint anyway .

Good solid insulation company with actual employees from the company doing the work, and not just…read morehiring outside contractors. Everyone was extremely experienced and the work was completed on my home quickly and efficiently, with everything having protective plastic sheeting all the way from my front door to the work areas. The sales rep that came out to do the initial inspection and to give a quote, was very experienced and answered all my questions. We agreed on a course of action, and I later discovered I needed additional work, and he worked with me on getting that added. The workers arrived even earlier than expected on the day they were working on our house. They clearly had all the appropriate material and machines and equipment to do the job correctly. I feel very good about everything that was done and I would definitely recommend them. Everything was left clean and there was nothing I had to do to clean up behind them. The reason I am not giving five stars (only 4 stars) is because of the paperwork having multiple errors, and they took weeks to get me the pictures of the before and after shots of the work they did. I asked them to correct some errors I found in the paperwork, and even found more errors and had to ask them a second time to correct the invoice for my records. I also questioned whether the correct insulation was put into a certain wall, because the paperwork was incorrect. It took a physical callback from a different person to physically check, and he didn't really seem to understand clearly what the problem was. I showed him pictures of the insulation rating that I took for that wall, and he was about ready to go and purchase the insulation and redo the specific wall I was questioning. But then he just called the installers and they told him they put the correct R-Rating on that wall and then he left. He clearly was not trained well enough, and I still don't know if the correct insulation was put on that wall. All the hassle of the paperwork correction and reinspection of the work was not necessary if they paid attention to details better. But other than the paperwork and questioning a specific wall, the actual work was professionally done and these guys clearly are a good professional organization. Just keep an eye on the paperwork and go over all the lines of work in the contract before you sign it. Don't rush and sign what they give you. Read every line on the contract to look for errors. As far as the value for the service and work, they were right in the price range I was expecting. Don't hesitate to use them.

I needed rats exterminated from my attic a few years ago and they gave me a great quote for a full…read moreair seal, disinfect and re-insulate of my entire attic space. They were on time and finished quickly. Why im leaving the review now? Well I recently heard rats in my attic again and called fully expecting to pay a fee to have them removed but hoping a repeal wasnt necessary. Not only did they remember me, not only did they come out the next business day (or maybe 2) but they didnt charge me to seal 3 new holes and lay out some traps. I havent heard the rats since and I am so happy with Eco Attic Systems I had to leave a review. They treat their customers like gold. I highly recommend them!

I reached out to Eduardo to replace my old attic insolation. I must say, his response time to my…read moreinquiry was very prompt. And the turnaround time was just as fast! He and his team gave me an estimate, and finished my entire attic within a span of 3 days. Highly recommend his services! Thank you Eduardo!

I've been hearing noises above the ceiling late at night for a few weeks. Since it had been over…read moretwo years since their last visit, Attic Bro scheduled a free inspection with Michael (per my request). Michael arrived right on time and was just as capable, professional, and pleasant as before. After thoroughly inspecting the attic and crawl space, he shared over a dozen clear photos showing that everything inside was spotless and in great condition. He even noted how fresh the air was, remarking that it felt like "we were here just yesterday!" Since my room doesn't have an attic or insulation directly above it, Michael explained that the noise was likely coming from animals on the roof. I'm so relieved and thrilled that the quality work Attic Bro completed in 2024 is holding up so well. Thank you, Michael, for your expertise and genuine care, and thank you, Attic Bro, for setting such a high standard!

We had a great experience with Attic Bros replacing our attic ductwork and insulation. Mike was…read morevery helpful and suggested that we get our roof replaced in between the ductwork and insulation work. We really appreciated his advice, and everything worked out smoothly. The crew showed up on time and did a very thorough job. On the insulation day, they spent more than half the day just cleaning and sanitizing the attic, sealing air leaks, and blocking rodent entry points before putting in the new insulation. They also showed us before-and-after photos, so we could see exactly what was done. We've definitely noticed a difference since the work was completed. The house feels quieter and more peaceful, and the temperature is much more even from room to room. We're really happy with how everything turned out and would definitely recommend Attic Bros!