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Top-Rated Spray foam insulation pros in Santa Rosa - Updated Nov 2026

Avatar for Redwood Insulation
Redwood Insulation
4.9(
16
)

Serving Santa Rosa, CA and surrounding areas

Approved

In business since 2018

Free estimates

Customers say: Quick response

"Matt completed the insulation of my crawl space with spray foam quickly and at a very competitive cost. I highly recommend Redwood Insulation without reservation."
Response time2 days
11 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Attic Pros
Attic Pros
4.9(
233
)

Serving Santa Rosa, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2012

Free estimates

Small jobs welcome

"It was an expensive service but worth it. Jorgeâ  s professional attention to detail is outstanding. He wore a full-on haz mat suit and cleared out what is easily 25 years of infested insulation from the ceiling crawl space and from under the house. The areas were thoroughly cleaned and sterilized. All the while, he was a detective unearthing every sneaky way the rats have crawled into the house. Every entry and path was sealed. Off with thick foam and gnaw-defiant screening. Traps were set and my hope is the house is so well fortified the rats will move on and leave this house alone"
Blow-In Attic Insulation
San Jose, CA Attic Insulation Installation
Danville, CA Vapor Barrier Installation
Mill Valley, CA Crawlspace Cleaning
Benicia, CA Attic Cleaning & Insulation

+3137

Response time11 hrs
Response rate94%
143 neighbors recently requested a quote
Avatar for Coast Building Products
Coast Building Products
4.5(
14
)

Serving Santa Rosa, CA and surrounding areas

Approved (Corporate)

In business since 1950

Free estimates

Credit card accepted

"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!"
Spary foam rooof line
Batt installatoin
Applying Spray Fiam
Response time8 hrs
Response rate100%
30 neighbors recently requested a quote
Avatar for Attic kings
Attic kings
5.0(
10
)
Insulation - Install or Upgrade

Serving Santa Rosa, CA and surrounding areas

Approved

Free estimates

Warranties offered

Customers say: True professional

"Moshe and his team at Attic Kings are amazing! When I contacted them, they got back to me almost immediately with a date and time for an estimate to install insulation. Moshe was very communicative, texting and calling to let me know when he would arrive. On installation day, Moshe made sure to keep everything as clean as possible, and everything went incredibly well. They are all so kind--would definitely hire again!"
Additional Photos
Response time5 days
Response rate100%
3 neighbors recently requested a quote
Avatar for Eagle Shield
Eagle Shield
4.3(
18
)

Serving Santa Rosa, CA and surrounding areas

Approved

In business since 2003

Free estimates

Emergency services offered

"I was happy with the job that was done. It provides insulation plus a vapor barrier. He put in a radiant barrier. It looks almost like tinfoil. They crawled around under the house installing it. It insulates better then conventional insulation. My house is warmer when it is cool and cooler when warm."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+9

Response time7 hrs
6 neighbors recently requested a quote
Recommended by84%of homeowners
Avatar for Atticare Construction
Atticare Construction
4.5(
177
)

Serving Santa Rosa, CA and surrounding areas

Approved

In business since 2008

Free estimates

Warranties offered

"We had a rodent infestation in our crawl space and insulation that had been installed upside down, a condition that can cause mold. I chose Atticare because they cleaned up the old insulation and rodent droppings, sealed entry points, sprayed to prevent mold, bacteria and viruses, installed insulation, and were clean. They cost more than other local insulation companies but I didn't have to hire a separate exterminator or worry about mold from the old insulation that was installed wrong. They arrived on time, answered questions and were very easy to work with. I would recommend them."
Before Atticare Services
After Properly Sealing the Access
After Insulation Installation
Clean and ready for Insulation Installation
After Insulation Installation

+26

Response time2 hrs
Response rate91%
28 neighbors recently requested a quote
Avatar for Ace Insulation, Inc.
Ace Insulation, Inc.
3.5(
30
)

Serving Santa Rosa, CA and surrounding areas

Approved

In business since 2011

Free estimates

Credit card accepted

"Ace was the lowest price and used the best insulation material which was fiberglass not cellulose. They showed up when expected and did a good job, we know, my husband was a building inspector before he retired."
Response time2 days
59 neighbors recently requested a quote
Recommended by82%of homeowners
Avatar for Attic Masters insulation Services
Attic Masters insulation Services
4.8(
111
)

Serving Santa Rosa, CA and surrounding areas

In business since 2010

Free estimates

Emergency services offered

"i can only say good things about working with Attic masters. Great communication, They came on time, protected our floors and hallway from insulation dust, took pictures of the before and after for us so we can get the rebate. overall, very easy and stress free company to work with. I would definitely use again, it was a pleasure to work with true professionals."
HVAC Duct Replacement
Insulation Installation & Attic Cleaning
Air Sealing & Rodent Proofing
New Construction
Vapor Barrier Install

+204

Recommended by94%of homeowners
Avatar for Tempest Insulation, Inc.
Tempest Insulation, Inc.
5.0(
27
)

Serving Santa Rosa, CA and surrounding areas

In business since 2020

Free estimates

Credit card accepted

"Tempest insulation with Fernando are going to be my go to team for any future insulation needs. I used tempest for a R44 blown in insulation. Fernando was on time for the estimate, sent me a follow up with responses to all my questions and began the work at 8 am on the dot! He and his crew were timely, professional, clean and were in and out of my place in less than a day and cleaned up everything after themselves. I would highly recommend them!"
airseal in attic
airseal in attic
airseal in attic
Millbrae walls project
Millbrae walls project

+8

Response time2 days
Recommended by100%of homeowners
Showing 1-10 of 40
FAQs for spray foam insulation projects in Santa Rosa, CA

Old insulation should be removed when it shows damage, contamination, or heavy deterioration. If you notice water stains, rodent droppings, mold, or large gaps, plan on taking it out to protect your home’s energy performance and indoor air quality. Removing compromised material eliminates health hazards, cuts energy loss, and sets the stage for a safer, more efficient attic—all while keeping utility bills in check.

R-value measures how well insulation resists heat flow—the higher the number, the better it slows heat transfer. The right R-value keeps your home warmer in winter and cooler in summer, saving energy year-round. Match the rating to your climate zone and have a pro verify performance over time, because moisture or settling can lower R-value and cut efficiency.

Attic insulation can stay in place for 80 to 100 years, but its performance often drops after the first 15. As dust, moisture, or mold build up, the material loses R-value and allows heat to escape. Schedule periodic inspections so a pro can tell you when replacement makes sense—helping you keep energy bills down and indoor comfort up.

You can over-insulate an attic. Beyond the recommended R-value, extra layers don’t add efficiency and can trap moisture, leading to mold or reduced performance. A local insulation pro can measure current levels, confirm the right target for your climate, and advise on any adjustments so you avoid future energy or maintenance headaches.

Insulation can be damaged by mold, pests, water leaks, or accidental electrical contact. When the material is compromised, it loses R-value and can introduce health hazards. Removing and replacing affected sections restores efficiency, while routine inspections from a qualified pro help you catch problems early and keep your attic safe and energy-smart.