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Avatar for Redwood Insulation
Redwood Insulation
4.9(
16
)
Blown-In Insulation - Install or UpgradeSpray Foam Insulation - Install

Serving Guerneville, 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 Coast Building Products
Coast Building Products
4.5(
14
)
Blown-In Insulation - Install or UpgradeSpray Foam Insulation - InstallBatt, Rolled or Reflective Insulation - Install or Upgrade+1 more

Serving Guerneville, 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%
27 neighbors recently requested a quote
Empire Insulation Contractors
3.8(
18
)
Batt, Rolled or Reflective Insulation - Install or UpgradeBlown-In Insulation - Install or UpgradeInjection Insulation - Install+1 more

Serving Guerneville, CA and surrounding areas

In business since 2003

Free estimates

"The project was to insulate the home (1800 sq. ft) --blown in R38 for the attic and 6 inch BATTS (R-19) for the basement/subfloor to protect our newly installed hardwood floors and to provide insulation in general. Every aspect of the process from initial consult call to bidding to project completion was superb. Craig provided excellent customer service. He understood our objective was to get the most value for our investment. He showed up on time and performed the project professionally and seamlessly. I highly recommend this contractor for insulation services."
Recommended by100%of homeowners
Avatar for Landmark Energy Upgrades
Landmark Energy Upgrades
4.8(
59
)
Batt, Rolled or Reflective Insulation - Install or UpgradeBlown-In Insulation - Install or UpgradeInjection Insulation - Install+2 more

Serving Guerneville, CA and surrounding areas

In business since 2009

Free estimates

Emergency services offered

"Last week I had Landmark energy upgrades, do energy efficiency work at my home. The work included sealing all my duct-work in the attic as well as sealing all the spots between the living space below and blowing in additional insulation in order to bring me up to today's standards. I also had them replace all the duct work in my crawlspace and seal it as well as when they came for their initial inspection they found that my duct-work was riddled with holes and was completely uninsulated as well as being unsealed. I initially contacted Landmark after receiving notification that they were offering assorted rebates for home owners to incentivize them to do upgrades to there homes.
I was super pleased with these guys, a total of two crews worked on our home and they were both quick, professional, and explained what they would be doing in detail when they first arrived. They also did a good job cleaning up after themselves. Immediately I noticed a difference in my home after the work was finished. The HVAC system weren?t running nearly as much and the temperature in the home was absolutely more consistent.  Landmark Energy Upgrades promptly handled all the paperwork required in order for me to receive my rebates making this part of the process extremely easy. I fully recommend these guys!
"
Cool Roof Install
Energy Upgrade
HVAC Air Duct
Home Energy Audit
Energy Upgrade Contractors

+6

Recommended by98%of homeowners
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Insulation questions, answered by experts

The level of insulation is determined by both the material and the thickness of the door. Some garage door materials (such as wood) have natural insulating capabilities, while other materials (such as metal) do not. No matter the material, two-layer and three-layer garage doors have a higher R-value than single-layer garage doors, as insulation is fitted between the panels. 

When it comes to fiberglass insulation versus foam board, there are a few notable differences, both aesthetically and functionally. Fiberglass insulation is soft and flexible, meaning it can be squeezed into tight spaces more easily than foam board. Fiberglass insulation also has a higher R-value, making it a better pick for colder climates. However, foam board insulation can resist moisture and pest damage much better than fiberglass.

You do not always need to remove old insulation before adding new. If the existing insulation is in good condition—not wet, physically damaged, moldy, or infested with pests—you can add new insulation directly on top of it for a compounding effect. You can also mix different types, such as adding blown-in insulation around existing fiberglass batts.

However, removal is recommended if the old insulation is compromised by water damage or pests. You should also remove it if you plan to install a different type of insulation, like switching from roll or batt insulation to spray foam. If the existing insulation is very old or damaged, you will likely get more benefit from removing it and starting fresh.

Yes, exposure to fiberglass insulation can cause harm to your skin and eyes. However, this typically refers to the fiberglass insulation that is mostly used in walls and attics. Fiberglass doors don’t pose risks for fiberglass exposure because they're fully encased in polymer cladding.

The heat loss through a poorly insulated attic when you’re running your furnace or heat pump during cold weather can be as high as 25%. This means you could see significantly higher energy costs to make up for this heat loss. The cost of adding insulation to the attic may eventually pay for itself through lower energy bills. If you decide to add a radiant barrier too, the radiant barrier cost may also pay for itself over time.

The Guerneville, CA homeowners’ guide to insulation services

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