Luis came by himself to review our project and talked to me extensively about all the different…read moreinsulation options and what he would recommend. He was super easy to contact via text & email, and provided me with all the technical specs on the insulation when I asked him for details. He was available to work pretty quickly and the guys did a great job. We noticed a difference right away in not needing to turn on the AC during the day even though it's 80+ degrees outside. The work isn't cheap but it definitely was good quality and made an immediate difference in the comfort of our home.

American Star with its owner Luis was a great company to hire for my attic insulation blow-in and…read morebatt additions. Luis and his crew are highly knowledgeable concerning insulation and install techniques, and crew leaders has great expertise, being trained and certified in the various material and installation techniques, so you are't dealing with just some everyday unskilled labor on your jobsite. For fast service that I received and personal customer service from the owner, you are in good hands with this local family-owned company.

When we bought our house many years ago I discovered a thin layer of blown in cellulose insulation…read morein the attic. It wasn't very even and being a bit of a handy man I added fiberglass batts over top. That made our house more comfortable. But since then we've had a couple of remodels, new roof, etc. In recent summers we noticed that the skylights in our house were much hotter than we remembered them being so one day I climbed up in the attic and saw that some areas had no insulation while others had far more than was needed. We decided we needed to have the insulation "fixed" - whatever was needed. A few weeks ago I called OJ Insulation in Morgan Hill. One of their estimators replied with a time to come by and we soon had an estimate. He agreed that we had plenty of insulation and it just needed to be "touched up"- which meant the guys would rearrange existing fiberglass to fill holes, put more strapping to hold batts thad shifted (like the skylight tunnels), etc. It wasn't practical to walk the entire attic to see exactly what was needed, so he gave me an estimate based on the living space - about $1/sq. ft. We got a time slot a few days later and on the morning a two man team showed up a few minutes early. They confirmed what I had asked to be done and they got to work. They took before and after photos which is helpful. They cleaned up and left the area spotless. It's been a couple of weeks since and we've had some hot days and I'm happy to report that there are NO hot spots in my house any more. Good job guys! Remember the estimate based on square footage? The estimator thought it would take the team 3-4 hours of work and I signed a contract of that amount of work. However, the guys were able to finish in about half that amount of time. I mentioned this to the estimator via email afterwards. He was surprised but gave me a discount on the price. I was pleased. On the basis of good work by their team and honest dealings by the management I am happy to recommend OJ Insulation.

They did an amazing job. Came to quote within 24hrs of me calling. They had the job done in a…read morecouple days and I couldn't be more impressed with the quality. They are very professional and have a great team. They definitely know what they are doing. I highly recommend them for any of your insulation needs. I will be having them come back to do the garage next.

Loved my experience with Sabas, who came promptly after making a nearterm appointment to see if we…read moreneeded more insulation. Great guy and just who Ponzini would want to represent them. If I get work done it will be these folks who do it. Thanks much!

I was able to get an appointment for an inspection and assessment of my house Insulation within two…read moredays. To my surprise, no additional Insulation is needed and I just have to live with the fact that my house is about 6° warmer than it is outside throughout the warm months. I really appreciate Sabas coming out for the visit and assessment. Great company that I would have no qualms in using for Insulation needs.

As I sit here at my parent's house not feeling hot, I am grateful that we chose to work with…read moreMasterguard. After finding them on Yelp, I called and the next morning Gary came over, provided an estimate and two weeks later they were installing attic fans and insulation. Gary even saw the heat coming from the skylight in the kitchen and threw some heat deflecting film on it. After 44 years in this house, this is the first time it has actually felt cool and pleasant. They did a great job from start to finish.

Reasonable pricing, professional, clean work and great communication. I definitely recommend people…read moregiving them a call.

I reached out to Cristino for attic and crawlspace services and he was able to send someone out the…read morevery same day to do an inspection. He gave us a reasonable quote and we were able to schedule the services pretty soon after. Shoutout to Juan and his team! They arrived on time and did an amazing job! They also made sure to keep the rest of the house clean by putting up plastic barriers around the work area. I appreciate that they really took their time to make sure everything was done correctly. The house definitely feels more comfortable with the new insulation! - Fair quote, flexible schedule, good communication, great results!

Cristino and his crews did a great job cleaning our attic n claw space, installed new insulation. I…read morelater have them back to replace my old whole house fan. Again his crews made the new fan look perfect matching. Would highly recommend

I was impressed by their business philosophy on their website. I filled out a form there to get an…read moreestimate to have insulation installed under my house floors but got zero response, zip, nada, bupkiss. That's just plain impolite and disrespectful. If they don't do that type of work, or are booked up or whatever, they could at least respond... no stars is more appropriate for no-shows!

Great experience with Chris, Jason, Joseph and team. They did an insulation upgrade on our older…read morehome. Timely, communicative, and transparent and reasonable with pricing. Highly recommended.

If you're looking for a company that's reliable, respectful, and truly values its customers, I…read morehighly recommend Nor-Cal. Definitely the best in the Bay!! !

From the very beginning, I appreciated how honest Damian was!…read more Given I have limited knowledge of insulation, he could have easily said that he could put blown-in insulation into my walls that already have old fiberglass insulation. Instead, he was completely honest about the minimal insulation effect it would have, given the amount of money and effort involved. Damian has a customer for life!