Top-rated insulation pros.

Get matched with top insulation pros in Penngrove, CA

Enter your zip and get matched with up to 3 pros

Matching on HomeAdvisor

Share some details icon
Share some details about your home project.
Match with local pros icon
Within moments, match with highly-rated local pros.
Compare quotes icon
Compare quotes and choose the best pro for the job.

Find 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 was very good about keeping all appointments and very friendly. His work on the insulation was nice and neat and very effective. Good adhesion in all surfaces, and he even made a special trip back on our small job to finish insulating several windows. Matt gave the best service and best product of all the contractors I’ve had to hire in the last year. We may ask him to come back and insulate the rest of the garage!"
Response time2 days
10 neighbors recently requested a quote
Recommended by100%of homeowners
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."
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 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

"Said Abdullah did a great job of finding and sealing holes that allowed critters to enter our attic. Over-all, AtticPros is doing a very thorough job of sealing our attic, removing the existing insulation and thoroughly cleaning the attic prior to installing new insulation."
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%
146 neighbors recently requested a quote
Avatar for Atticare Construction
Atticare Construction
4.5(
172
)

Serving Penngrove, CA and surrounding areas

Approved

In business since 2008

Free estimates

Warranties offered

"Atticare came an "vacuumed" out he old blown in insulation, closed up the holes to the outside and installed new insulation. They were prompt, worked cleanly, told us what they were doing and gave us pictures of the completed work."
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%
2 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

"They get back to me immediately with a quote and were very informative about the recommendations for the insulation that I needed and would best suit my needs. They did the job quickly and efficiently and I really appreciate their courteous prompt service"
Spary foam rooof line
Batt installatoin
Applying Spray Fiam
Response time8 hrs
Response rate100%
26 neighbors recently requested a quote
Avatar for Ace Insulation, Inc.
Ace Insulation, Inc.
3.5(
29
)

Serving Penngrove, 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
55 neighbors recently requested a quote
Recommended by86%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

"Flexible on scheduling. Drill and fill insulation work was done as specified. Work was performed efficiently and job site was left clean and neat. Excellent results so far."
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 Tri County Insulation
Tri County Insulation
4.6(
19
)

Serving Penngrove, CA and surrounding areas

In business since 1974

Credit card accepted

"Every person that came into our home from Tri-County was very professional and respectful.  They covered everything with plastic before removing the insulation and again when blowing it back in.  They cleaned up and disposed of the plastic, vacuumed the attic and cleaned up after themselves such that  you would never have known they were here.  The job of sealing the attic was done so well that the inspector made a comment that he had never seen a job done as well as this and ask who had done the work.  He gave them very high praise.  

The salesman we had, Bryan Zailer, was very knowledgeable and helpful.  He would call back immediately if we had a question and stop by to check on things.  I would highly recommend Tri-County to everyone for their insulation needs."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+4

Recommended by94%of homeowners
Avatar for Apperson Energy Management
Apperson Energy Management
4.7(
56
)

Serving Penngrove, CA and surrounding areas

In business since 1983

Free estimates

Warranties offered

"Jon was easy to work with, made the process simple beginning to end. The two guys that showed up to do our attic insulation install were efficient, we are very happy with the work overall. Would definitely recommend and use again in the future for other services."
Recommended by100%of homeowners
Avatar for Attic Masters
Attic Masters
4.7(
33
)

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.
"
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+7

Recommended by95%of homeowners
Showing 1-10 of 34

FAQs for insulation service 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.

The Penngrove, CA homeowners’ guide to insulation services

From average costs to expert advice, get all the answers you need to get your job done.

  • carpenter repairing the roof of a house

    Use this guide to budget for roof repair costs based on factors such as roof condition, materials, size, repair type and severity, and more.

  • fascia and soffits being replaced on roof of house

    Need fascia and soffit repairs? Hiring a pro ensures proper installation, protects against pests, and prevents structural damage. Learn about common warning signs, material options, and how fascia and soffits safeguard your home from moisture.

  • new roof installed on house

    Our comprehensive cost guide will help you explore the costs associated with roof replacement, including roof pitch, shape, design, square footage, and more.

  • Two hvac systems

    Learn who to call for HVAC inspection. Discover which pro to hire, what to expect from an HVAC inspection, and average costs for your home.