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Find Spray foam insulation pros in Penngrove

Avatar for Redwood Insulation
Redwood Insulation
4.9(
16
)

Serving Penngrove, 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 Penngrove, 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 time12 hrs
Response rate94%
148 neighbors recently requested a quote
Avatar for Coast Building Products
Coast Building Products
4.5(
14
)

Serving Penngrove, 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 Eagle Shield
Eagle Shield
4.3(
18
)

Serving Penngrove, 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."
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+9

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

Serving Penngrove, 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%
22 neighbors recently requested a quote
Avatar for Tri County Insulation
Tri County Insulation
4.6(
19
)
Insulation - Install or Upgrade

Serving Penngrove, CA and surrounding areas

In business since 1974

Credit card accepted

"The sales rep, Bryan, went above and beyond to answer all my zillion questions and concerns. He was responsive, knowledgeable and shared his expertise in not only insulation, but all in LED canned lights and dimmers. He was amazing and I would only ask for him again. I plan to refer others to him also in the near future. The installers were good too, letting me climb the ladder and look at the work, cleaning out the old insulation and advising me they found no termites or rodent droppings. I wish they would have vacuumed the bedroom where they brought in a lot of dirt on the carpet, and also used the shop vac in the garage afterwards, as I had to clean up afterwards, which took me an extra hour. However, overall, I was pleased."
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+4

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

Serving Penngrove, CA and surrounding areas

In business since 2020

Free estimates

Credit card accepted

"I want to first thank Fernando and his crew for an amazing job they did. His team was very professional and got the job done in one day at my request. I would hire him again. They removed old sheets of insulation, the loose insulation from my attic, vacuumed the entire attic, sanitized it, added baffles so the new loose insulation would not clog up the eaves of the house, they seal interior walls, drilled holes into the exterior walls of our house, blew in new insulation, seal the holes and made sure everything was clean when they left. My house is now cooler that ever with AC set at 77 degrees Thanks again for the great service."
airseal in attic
airseal in attic
airseal in attic
Millbrae walls project
Millbrae walls project

+8

Response time2 days
Recommended by100%of homeowners
Avatar for Attic Masters
Attic Masters
4.7(
33
)
Insulation - Install or Upgrade

Serving Penngrove, CA and surrounding areas

In business since 2010

Free estimates

Credit card accepted

"We had an inspection and we had to replace the insulation in the attic. We were able to get a good deal from this company after we reached them via a referral. 
The work that they did was very good and professional. there were several employees at the house for the 2 days work that they did. We do recommend this company for any insulation replacement that you may need.
"
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+7

Recommended by95%of homeowners
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FAQs for spray foam insulation projects in Penngrove, 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.