Spray Foam Insulation in Santa Rosa, CA

I first used California State Insulation about nine years ago (2003) to remove the blown-iin insulation from the attic over my family room during a remodel. They were amazingly dedicated to the task, which can be described as torturous, at best. Excellent quality job, and left the place perfectly clean. Subsequently, they have done the insulation and drywall work in each of the five rooms I have remodeled in my home, one at a time, no job too small. Again, excellent quality and very fair price. I also had them do insulation and drywall in my entire woodworking shop, which I built new, and which is about 1150 sq ft. They did a "house quality" job in my shop! These guys are awesome! I highly recommend them.

Good company . Hard workers

Jose and his crew were very professional, punctual, as well as very informative. They made sure to be here on time, and did a very good job of staying neat and clean. They also informed us of the production that was done day by day. He stayed on schedule as predicted and remained very professional. I have already recommended him to a few people and will continue to do so. I definitely recommend this company.

I knew I needed a moisture barrier under my house and called Under the House. Jose was quick to schedule a visit to better understand the situation and prepare an estimate. He was on time for the visit and asked a few questions before surveying the environment. He answers some of my questions too. I received a few other quotes and for the same work and equivalent materials, the estimate from Under the House won the day. It took two partial days to complete the work (thankfully my crawl space is very accessible and doesn’t even require crawling) and his team worked hard during those days. Jose again answered my questions and after a recent hard rain I inspected the space myself and found it completely dry. Happy (and dry) days for me! My foundation is grateful and so am I! Thanks Jose!

Jose and his team are fantastic. Very neat and respectful of our house. Good communication-punctual- hard working at a fair price. They did an amazing job cleaning the vapor barrier and disinfecting & refreshing the crawlspace. Highly recommend their work!

On time, knowledgeable and friendly. Clean installation of attic insulation. Would recommend them.

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!

We asked for the job to be done in june. I called last week to see if we could do it sooner and we were able to have it done yesterday. They were in and out in 4 hours. Covered everything. Cleaned up. The owner was here working with a crew of 2. They started in the master bedroom and compared to the day before when it was hot in the afternoon we could already feel a big difference. We cannot wait for winter to see the difference and i can finally put my furniture along the exterior walls

Great to work work with, completed the job quicker than expected.

I have had ALCAL replace my garage doors and clean and replace my attic insulation. Rich and Tim came out to provide estimates for both projects and were very professional, and answered all of my questions. Their crews were on time, very polite, clean, and did great work. One of the insulated garage door panels was cracked and they coordinated with the manufacture to get it replaced. I also was extremely pleased with how well they cleaned out the attic in preparation for the new insulation-thanks Rafael, Dillon, and the rest of the team!

The installation gays are always good