4.5 
37 *The Angi rating for Insulation Service companies in San Francisco, 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 Francisco, 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 September 11, 2025
Serving San Francisco, 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 Francisco, 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 Francisco, CA and surrounding areas
Approved
Free estimates
Warranties offered
Customers say: True professional
"Remove old insulation seal to entry point to make sure no rodents activity and install new insulation"
Serving San Francisco, 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 Francisco, 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 Francisco, 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 Francisco, CA and surrounding areas
Approved
In business since 1999
Free estimates
Warranties offered
"They got the job done in one day, very careful personal. New insulation is working great. We are now waiting for the details on the rebate. Price was also good and affordable"
+77
Serving San Francisco, CA and surrounding areas
Approved
Free estimates
Emergency services offered
Warranties offered
"American Attic was everything they promised. Met with the owner , Sam, within a day to get a quote for removal of old insulation, rodent control and install of new insulation. He was professional and explained everything in detail of what was work was going to be done and how long it would take. We scheduled within a week at a reasonable price. His crew were neat, organized and finished on time! We were notified of some extra things that were found while they were on the job but were not pressured to have those things done. We recommend American Attic to friends or family and would definitely use them again."
+52
Serving San Francisco, CA and surrounding areas
Approved (Corporate)
In business since 1950
Free estimates
Credit card accepted
"Cruz helped us understand our options and visited twice to finalize the scope of work. Insulation team was punctual and provided expert craftsmanship. Glad I chose Coast."
Serving San Francisco, CA and surrounding areas
Approved
In business since 2011
Free estimates
Credit card accepted
"Best for spray foam insulation"
From average costs to expert advice, get all the answers you need to get your job done.
New insulation makes your home more comfortable and boosts energy efficiency. Use this guide to budget for insulation installation costs in San Francisco, CA.
The cost of blown-in insulation in San Francisco, CA varies depending on the type of insulation, labor, prep work, and more. Learn more about the cost factors in this guide.
Use this guide to figure out the cost to convert your garage into a living space in San Francisco, CA.
Learn how to decide if your home needs dryer vent insulation to protect your vent from drafts and moisture that can make your energy usage less efficient. Poorly ventilated dryer vents also increase mold risks!
Removing old insulation may be necessary for upgrading your insulation. Keep reading to see if you should remove old insulation before adding new insulation.
Learning how to insulate plaster walls can help improve your home's energy efficiency. However, there are crucial cautions to consider before attempting.
