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Find Spray foam insulation pros in Brentwood

Avatar for ThermaCore Insulation Inc.
ThermaCore Insulation Inc.
5.0(
21
)

Serving Brentwood, CA and surrounding areas

Approved

In business since 2016

Free estimates

Warranties offered

"We hired ThermaCore Insulation to remove our old attic insulation, air seal the attic, and install new insulation. Kamal and his crew were professional, honest, and easy to work with from start to finish. During the inspection, they found several air leaks and duct issues that other companies completely missed. They explained everything clearly, completed the work on time, and left the area clean. We noticed a big improvement in comfort right away. Great service, fair pricing, and quality workmanship. Highly recommend ThermaCore Insulation!"
ThermaCore Insulation
applying 2-inches closed- cell spray foam
shipping container
project preparation
first code completion

+28

28 neighbors recently requested a quote
Avatar for Attic Pros
Attic Pros
4.9(
233
)

Serving Brentwood, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2012

Free estimates

Small jobs welcome

"Abdullah came by this morning and did a thorough investigation of where the rats are continuing to get into the walls of my house. He checked the traps set in the attic, went up on the roof to check for any entry holes, sprayed foam on a couple potential entry holes on the back of the house, and secured my dryer vent and hose. He answered all my questions professionally, and was efficient and courteous. I highly recommend his services."
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%
145 neighbors recently requested a quote
Avatar for Attic kings
Attic kings
5.0(
10
)
Insulation - Install or Upgrade

Serving Brentwood, CA and surrounding areas

Approved

Free estimates

Warranties offered

Customers say: True professional

"Fantastic service, Mosh and employees dedicated to the complete eradication of all rodents. Traps, closing off access areas with steel mesh and sanitizing attic with a spray was worth the money. Most important was Mosh’s follow up 2 weeks later to make sure everything was all right. 10 star rating"
Additional Photos
Response time5 days
Response rate100%
Recommended by100%of homeowners
Avatar for Eagle Shield
Eagle Shield
4.3(
18
)

Serving Brentwood, 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."
Additional Photos
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Additional Photos

+9

Response time7 hrs
5 neighbors recently requested a quote
Recommended by84%of homeowners
Avatar for CA Attic Solutions Inc.
CA Attic Solutions Inc.
5.0(
13
)

Serving Brentwood, CA and surrounding areas

Approved

In business since 2024

Free estimates

Credit card accepted

CA Attic Solutions\nAt CA Attic Solutions, we are dedicated to providing top-notch insulation solutions that enhance your home’s comfort, efficiency, and overall quality of life. Founded on the principles of excellence, integrity, and customer satisfaction, we have built a reputation for delivering reliable, high-performance services tailored to meet your unique needs. \n\nWe are committed to offering exceptional service, using the latest technology and highest-quality materials to ensure that your home remains comfortable and efficient throughout the year.\n\nhttps://californiaatticsolutions.com/

ATTIC INSULATION
10 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Atticare Construction
Atticare Construction
4.5(
177
)

Serving Brentwood, CA and surrounding areas

Approved

In business since 2008

Free estimates

Warranties offered

"The crew arrived on time and installed plastic on the floor and walls for protection. They did a good job removing the old insulation and installing new insulation. The crew did a great job cleaning up. Nice professional job."
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%
Recommended by93%of homeowners
Avatar for USAttic Insulation
USAttic Insulation
5.0(
2
)

Serving Brentwood, CA and surrounding areas

Approved

In business since 2018

Free estimates

Warranties offered

"Great experience, The work was done professionally and the results were excellent. I?m very happy with how everything turned out and would definitely recommend them to anyone in the area"
Blown-In Insulation
Cleaning Air sealing
Blown-In Insulation
Blown-In Insulation
Cleaning

+3

3 neighbors recently requested a quote
Avatar for American Attics
American Attics
5.0(
8
)
Insulation - Install or Upgrade

Serving Brentwood, 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."
Additional Photos
Additional Photos
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Additional Photos

+52

Response time2 days
Response rate100%
10 neighbors recently requested a quote
Avatar for Insulation Alliance
Insulation Alliance
5.0(
2
)
Insulation - Install or Upgrade

Serving Brentwood, CA and surrounding areas

Approved

In business since 2017

Free estimates

Warranties offered

"When Insulation Alliance came, they were very professional. They laid down plastic everywhere in the hallway and the bedroom. They cleaned out the whole attic. They took out the old insulation and put in the new Insulation which was R 44. They cleaned up everything and everything was clean when they left. They also sanitized the attic. You will not be disappointed that you hired."
Attic Cleaning
Attic, Crawl Space and Basement Decontamination
ATTIC, WALL, CRAWL SPACE INSULATION
THERMAL INSPECTION
REMOVING INSULATION

+86

12 neighbors recently requested a quote
Recommended by50%of homeowners
Avatar for AD Insulation
AD Insulation
5.0(
1
)
Insulation - Install or Upgrade

Serving Brentwood, CA and surrounding areas

Approved

In business since 2024

Free estimates

Credit card accepted

"In comparison to other quotes their price was very reasonable for the same service They were very personable and responsive to questions. They arrived on time and were able to complete the job in one day. I would definately recommend them to anyone needing this type service."
18 neighbors recently requested a quote
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FAQs for spray foam insulation projects in Brentwood, 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.