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Best insulation pros near Greenwood, CA

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Top-Rated Insulation pros in Greenwood - Updated Nov 2026

Avatar for The Insulation Pros
The Insulation Pros
4.8(
35
)
Batt, Rolled or Reflective Insulation - Install or UpgradeBlown-In Insulation - Install or UpgradeInjection Insulation - Install+2 more

Serving Greenwood, CA and surrounding areas

In business since 2013

Free estimates

Credit card accepted

"I had called Insulation Pros for an estimate with very short notice as well as two other companies. Conrad was the second person to give me a detailed estimate also was more then pleased to come out to my house and write me a real in hand quote. He was on time and very informative on the project. The following Monday the 2 professional men came to my house and did the job that I was promised and within the time that was allotted. Cleaned up and was off to the next shortly after seeing if I was pleased with the job. These guys are awesome. I do recommend Insulation Pros to anyone thinking about getting insulation done.
Thank you and all your staff.
Chris K."
Blown-In Insulation
Batt Insulation
Insulation Removal
Air Sealing
Thermostat Controlled Attic Fans

+2

Recommended by96%of homeowners
A Better Insulation Co.
3.3(
69
)
Batt, Rolled or Reflective Insulation - Install or Upgrade

Serving Greenwood, CA and surrounding areas

In business since 1992

"We had radiant barrier insulation installed insteads of blown in insulation. It was laid in the attic rafters, upon the completion of the job the service provider could have done a better job of cleaning up. He also left some marking on our cabinet. When the gentleman came over to give us an idea of what radiant barrier is we never knew when he would be there, they gave us an estimate but then upon completion we wrote a check, but never received a receipt of payment, or work order showing completed work. All we had was the gentleman sign the estimate that we had been given two weeks prior to the job. And the installer did not have any paperwork saying that he did the job. But we had him write that on the estimate. I would expect more professional paperwork."
Installer in Attic Picture
Response time4 hrs
Recommended by73%of homeowners
Avatar for Diamond Heating and Air
Diamond Heating and Air
4.8(
120
)
Batt, Rolled or Reflective Insulation - Install or UpgradeBlown-In Insulation - Install or UpgradeInjection Insulation - Install+2 more

Serving Greenwood, CA and surrounding areas

In business since 1990

Free estimates

Credit card accepted

"They were fantastic! From Elaine who took my call to Eric who came to the house, the professionalism, courtesy, responsiveness and service I got from Diamond was top notch. On one of the hottest days of the summer when our A/C went out (naturally), they went out of their way to get to me ASAP. Then when Eric came to do the service call, he was efficient and thorough and very clear about what he was doing and why. 
I couldn't recommend this company more.
"
Additional Photos
Recommended by96%of homeowners
Avatar for Mega Power Electric, Inc
Mega Power Electric, Inc
5.0(
191
)
Batt, Rolled or Reflective Insulation - Install or UpgradeBlown-In Insulation - Install or UpgradeInjection Insulation - Install+2 more

Serving Greenwood, CA and surrounding areas

In business since 2000

Free estimates

Emergency services offered

"Great job on the house, they had everything installed in 3 days and once the LAWP Panel from the power company and hooked everything, then everything was working well. they took care of all the paper works and documentation, and everything was done quickly. Best price available for us."
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+32

Recommended by100%of homeowners
Avatar for Spray Foam Genie - Reno
Spray Foam Genie - Reno
5.0(
4
)
Batt, Rolled or Reflective Insulation - Install or UpgradeBlown-In Insulation - Install or UpgradeInjection Insulation - Install+2 more

Serving Greenwood, CA and surrounding areas

In business since 2023

Credit card accepted

Your local spray foam insulation professionals. We give free estimates! We can install Open and Closed Cell Spray Foam in most spaces. We offer Attic and Crawl Space Air Encapsulations, sound barriers, vapor retarders and moisture barriers. We can insulate anything, including metal buildings and new construction homes!

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+19

Avatar for Brazil Quality Construction Inc
Brazil Quality Construction Inc
4.7(
48
)
Batt, Rolled or Reflective Insulation - Install or UpgradeBlown-In Insulation - Install or UpgradeInjection Insulation - Install+2 more

Serving Greenwood, CA and surrounding areas

In business since 1997

Free estimates

Credit card accepted

"All work done as presented. However, final test will be the next big rain to see if the leak is fixed. I feel confident that it is fixed. George was the estimator and supervisor of the work. He has many years of experience in the field and comes across as trustworthy and competent. It was a pleasure to deal with him."
Composition
Concrete
Integrated Solar
Recommended by100%of homeowners
Itchy Insulation
5.0(
5
)
Batt, Rolled or Reflective Insulation - Install or Upgrade

Serving Greenwood, CA and surrounding areas

In business since 2005

Free estimates

Warranties offered

"Right from the get go Brian was very helpful. He was very up-front and patiently explained all the kinds of insulation and suggested which ones to use. He even went so far as to include the inside wall insulation for soundproofing at no cost since the project was large. Very easy to work with and flexible."
Recommended by40%of homeowners
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Insulation FAQs, answered by experts

Asbestos has many beneficial properties, including fire resistance, strength, and chemical resistance. It is also an excellent insulator, which is why it was used in pipe insulation and other building materials for decades. For all its benefits, asbestos is dangerous for human health, which is why it was eventually banned from use in certain products.

You do not need to drywall over most types of garage insulation. However, doing so can increase noise reduction, make the space more attractive, and keep children and pets from touching harmful fiberglass insulation. If you’re using cellulose or some other type of blown-in insulation (fiberglass and mineral wool are common), you will need drywall to contain the insulation material.

While a few icicles on your roof are standard, a large accumulation can be a sign of a bigger problem, such as poor insulation. This is particularly true if you are also dealing with ice dams. If you have numerous large icicles, it is recommended to have a roofing contractor diagnose potential insulation issues and create a plan to solve them.

Mineral wool wraps are the most affordable and effective insulation for crawl space ducts. They are easy to cut, last for a long time, and healthier for humans. Meanwhile, fiberglass wraps are cheaper but more hazardous and difficult to handle. If you do choose to use a fiberglass wrap, make sure you are wearing long sleeves and wear proper protective gear.

Polyisocyanurate foam, or polyiso for short, has the highest R-value per square inch: 6.5 to 6.8. Polyiso is a rigid foam that comes with a reflective foil on both sides to serve as a radiant barrier. Given its high R-value, rigid foam is usually meant for foundations and basement walls.

The Greenwood, CA homeowners’ guide to insulation services

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