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Top-Rated Insulation pros in Guerneville - Updated Nov 2026

Avatar for Coast Building Products
Coast Building Products
4.5(
14
)
Blown-In Insulation - Install or UpgradeBatt, Rolled or Reflective Insulation - Install or UpgradeSpray Foam Insulation - Install+1 more

Serving Guerneville, 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%
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

"Good customer service and were flexible when scheduling the work to be done. Can already feel a bit temperature difference in the attic where the insulation was done and the finish job makes the attic very bright. We have gained valuable space having had this work done."
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

"We have a 1970's and we decided to have an energy audit by Landmark Construction. It was clear that our house have some energy issues and was in need of a any type of energy overhaul.  The report that was prepared for us by Charlie and his office staff, was comprehensive, clear to understand and revealed that the ducts at the attic  was not sized appropriately. In addition to that, the furnace/AC in the smaller unit was old (and original) and had to be replaced. The recommendations that Charlie told us, included a new furnace/AC, new tankless water system, hot water pipe insulation, building sealing, the insulation and new ducting throughout the house. This was the best investment we ever made.  I could not believe the difference in our utilities bill.  Charlie and his team were great,  professional and experienced. I wish we did these 15 years ago!!
"
Cool Roof Install
Energy Upgrade
HVAC Air Duct
Home Energy Audit
Energy Upgrade Contractors

+6

Recommended by98%of homeowners
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Insulation FAQs, answered by experts

DIY installation is not recommended, as professionals ensure even distribution, proper sealing, and compliance with building codes.

Doubling the insulation in your home also doubles the R-value of said insulation. In other words, by adding more insulation, you can reduce the heat loss by half. Most homes benefit from increasing insulation. Older homes, in particular tend to have less insulation as is, so doubling your insulation could drastically reduce your energy bills, keep your home more comfortable, and take the strain off your HVAC system.

Single-pane windows might let in the cold, but if you’re not ready for a long-term solution or window replacement, there are quick fixes to keep your space warmer. Start by sealing gaps with weatherstripping or caulking around the frame to block drafts. For an extra barrier, apply window insulation film to the glass, trapping an air pocket between the film and the window. Thick curtains or thermal drapes can also help keep the chill at bay. And if you’re in a pinch and looking to get creative, bubble wrap can provide a surprisingly effective layer of insulation—just spritz the window with water and press it on, bubble side in.

Yes, insulated vinyl siding increases the R-value of your home. Depending on the quality and brand of the insulated vinyl, you can get an R-value that is up to 5 times greater than traditional vinyl siding. This can be fantastic for homeowners who are trying to lower their utility costs.

It’s technically possible to install loose-fill cellulose insulation without a blower, but it’s much more time-consuming, tedious, and dangerous. You’ll need to wear the proper protective coverings to handle the cellulose after it’s been doused in boric acid; use a shovel when you can to transport the material from the bag into the wall cavity.

That said, if you purchase cellulose materials at a home improvement store, ask if they rent out blowers for free or at a discounted rate. In many cases, if you buy the material from the store, they’ll rent out the blower at no extra cost.

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.