4.5 
30 *The Angi rating for Insulation Service companies in San Jose, CA is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Insulation Service needs.
*The HomeAdvisor rating for Insulation Service companies in San Jose, CA is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Insulation Service needs.
Last update on April 27, 2026
Serving San Jose, CA and surrounding areas
Approved
In business since 1988
Free estimates
Warranties offered
"The guy checked my house, told us our insulation is good enough and we don't really need to do anything. Thanks for the honesty. I will definitely recommend this guy to my friends."
Serving San Jose, CA and surrounding areas
Approved
In business since 1988
Free estimates
Warranties offered
"Had a great experience hiring Bay Valley Insulation. The quote arrived very efficiently and was the price I was looking for. The crew of Tony and Henry arrived inside the scheduled window and work was completed in a timely manner that day. The job looked great in the blown attic and final clean-up was great. Thank you."
Serving San Jose, CA and surrounding areas
Approved
In business since 2017
Free estimates
Offers commercial services
"They did a terrific job insulating our new home in Oakland. Great value and professional."
Serving San Jose, CA and surrounding areas
Approved
In business since 2013
Free estimates
Warranties offered
"They fit into my Roofing schedule perfectly as I had my roof off and needed some insulation at a certain time."
Serving San Jose, CA and surrounding areas
Approved
In business since 2003
Free estimates
Emergency services offered
"I love this company! Garrett came to my home and assessed how efficient our current insulation, etc was. He was very informative and friendly — explained what we needed and how they could help. At the time, I decided to hold off and he never pushed the sale. When I was ready, he was quick to accommodate my schedule. His team: Angel, Luis, Tommy and TJ were great! They arrived early, were professional, courteous, kind, very helpful with my questions and were above and beyond to help fix things that I wasn’t even aware of. They also were more than happy to help with small problems that I had no idea how to fix. They worked quickly and cleaned up afterwards. You could tell they cared about their work which makes me feel confident that the job was done right. They were also fun to have around — my Great Dane loved them too! Garrett and Dave checked in with me during and afterwards to make sure things were going well and if I had any questions. I highly recommend Eagle Shield."
+9
Serving San Jose, CA and surrounding areas
Approved
In business since 2009
Free estimates
Emergency services offered
"Wais and his team did a terrific job removing old, shoddy, blown insulation in our attic, added new batt insulation, rat proofed it, reapplied insulation around the duct work, added a new attic fan, all in record time. Very pleased with how careful they were setting up and removing every bit of waste."
+3895
Serving San Jose, CA and surrounding areas
Approved
In business since 2008
Free estimates
Warranties offered
"Attic is all clean and insulated now! The team was great!"
+26
Serving San Jose, CA and surrounding areas
Approved
In business since 2017
Free estimates
Emergency services offered
"Installed insulation and best barrier of aluminum. Prompt and thorough! with good communication"
+103
Serving San Jose, CA and surrounding areas
Approved
In business since 1975
Free estimates
Warranties offered
"Project was to install side wall insulation for a 60 yr old apartment."
+22
Serving San Jose, CA and surrounding areas
Approved
In business since 1999
Free estimates
Warranties offered
"I actually had both my attic and walls insulated. Great price, on-time, efficient, clean-up and communication. Unusual from most contractors today. I would highly recommend these guys. Milo was our contact."
+77
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