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TRUSTED BY LOS GATOS, CA HOMEOWNERS

  • Average homeowner rating star icon4.7
    Average homeowner rating
  • Verified reviews icon120
    Verified insulation services reviews

Verified Reviews for Insulation Service pros in Los Gatos, CA

*The Angi rating for Insulation Service companies in Los Gatos, CA is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Insulation Service needs.

*The HomeAdvisor rating for Insulation Service companies in Los Gatos, CA is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Insulation Service needs.

Last update on January 20, 2026

Find Insulation pros in Los Gatos

Bay Valley Insulation, Inc.
4.6(
192
)

Serving Los Gatos, CA and surrounding areas

Approved

In business since 1988

Free estimates

Warranties offered

"Had a great experience hiring Bay Valley Insulation. The quote arrived very efficiently and was the price I was looking for. The crew of Tony and Henry arrived inside the scheduled window and work was completed in a timely manner that day. The job looked great in the blown attic and final clean-up was great. Thank you."
Response time1 day
63 neighbors recently requested a quote
Recommended by99%of homeowners
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Avatar for Vortex Insulation, Inc.
Vortex Insulation, Inc.
4.8(
31
)

Serving Los Gatos, CA and surrounding areas

Approved

In business since 2017

Free estimates

Offers commercial services

"They did a terrific job insulating our new home in Oakland. Great value and professional."
Blow in cellulose insulation into the garage walls
Spray foam insulation into the garage ceiling.
Old blow-in fiberglass insulation removal in the a
Response time1 day
85 neighbors recently requested a quote
Recommended by92%of homeowners
Request Quote
Avatar for Greenshield, Inc.
Greenshield, Inc.
4.6(
96
)

Serving Los Gatos, CA and surrounding areas

Approved

In business since 2013

Free estimates

Warranties offered

"They fit into my Roofing schedule perfectly as I had my roof off and needed some insulation at a certain time."
Response time8 hrs
27 neighbors recently requested a quote
Recommended by95%of homeowners
Request Quote
Avatar for Eagle Shield
Eagle Shield
4.3(
18
)

Serving Los Gatos, CA and surrounding areas

Approved

In business since 2003

Free estimates

Emergency services offered

"I was happy with the job that was done. It provides insulation plus a vapor barrier. He put in a radiant barrier. It looks almost like tinfoil. They crawled around under the house installing it. It insulates better then conventional insulation. My house is warmer when it is cool and cooler when warm."
Additional Photos
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Additional Photos

+9

Response time7 hrs
2 neighbors recently requested a quote
Recommended by84%of homeowners
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Avatar for Nor-Cal Insulation, Inc.
Nor-Cal Insulation, Inc.
4.5(
15
)

Serving Los Gatos, CA and surrounding areas

Approved

In business since 2009

Free estimates

Small jobs welcome

"Needed to insulate my house before closing escrow, called for a quote on a Monday and they were insulating the very next day. The owner Luis Knows his stuff, very knowledgeable. Would recommend. 👍🏼👍🏼"
Insulation / Spray Foam
Mineral Wool Insulation
Attic Fiberglass Batts
Subfloor Fiberglass Batts W/ Netting
Open Cell Spray Foam / Fiberglass Batts

+5

Response time1 day
Response rate91%
11 neighbors recently requested a quote
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Avatar for Attic Pros
Attic Pros
4.7(
101
)

Serving Los Gatos, CA and surrounding areas

Approved

In business since 2009

Free estimates

Emergency services offered

"Getting my attic cleanup and insulation installed was expertly done by Attic Pros. Couldn't be happier with the result. They are definitely pros!"
Fortify your home’s attic with high-quality insulation and strategic rodent-proofing.
Lock in warmth and lock out pests with expert attic insulation and rodent-proofing.
Transform your attic into a pristine, energy-efficient area with our insulation and sanitation services.
Maximize your attic’s efficiency and hygiene with expert insulation installation and sanitation services.
Create a healthier living space with expert attic insulation installation and deep sanitation.

+3895

Response time9 hrs
Response rate97%
13 neighbors recently requested a quote
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Avatar for C.A.V Insulation, Inc.
C.A.V Insulation, Inc.
4.9(
26
)

Serving Los Gatos, CA and surrounding areas

Approved

In business since 2019

Free estimates

Offers commercial services

"Very professional team. Provided clear options for my small insulation project of my shed."
Response time8 hrs
8 neighbors recently requested a quote
Recommended by100%of homeowners
Request Quote
Avatar for Atticare Construction
Atticare Construction
4.5(
172
)

Serving Los Gatos, 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
Request Quote
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Showing 1-10 of 77
Insulation questions, answered by experts

Structural insulated panels and rigid foam boards have the highest R-value of any insulation that contractors commonly use, with R-values reaching up to around 8.0. These types of insulation are best in extremely cold climates, but they’re generally preferred for new construction, as they can be challenging to retrofit. Blown-in and loose fill insulation provide the next best insulative value, provided the installation is done properly. It’s important to choose an insulation type that meets your needs based on climate, as maximizing R-value may not always be financially worthwhile if you live in a moderate climate.

Reflective and high R-value batt or roll insulation are often considered energy-efficient, offering significant thermal resistance benefits.

The average cost to install insulation is around $1,800, but you could pay anywhere between $500 and $4,500, depending on various factors. Some of the things that have a significant influence on your pricing include the following:

  • Size of the area 

  • Type and R-value of the insulation 

  • Whether your space is finished or unfinished

  • Accessibility of the area

  • Your geographical location

  • Amount of site preparation, especially for blown-in insulation

  • Whether or not you need old insulation removed

The most affordable way to insulate a garage involves choosing cost-effective materials like fiberglass, which comes in batts or rolls and is relatively easy to install. You can often install this type of insulation without needing to add drywall, which helps reduce costs. While a DIY approach might seem cheapest, hiring a professional installer can be highly cost-effective. Experts can accurately determine your garage's specific insulation needs and ensure the best results for your investment, often using batt insulation for the bulk of the project.

When installing metal siding, a high-quality house wrap is considered the best protection against condensation and moisture infiltration. House wraps can increase a home's efficiency significantly. However, a house wrap is not a replacement for a vapor barrier because it can be permeable when moist air passes through siding. This is why it's essential to follow manufacturer instructions for insulating siding when installing new siding.

The Los Gatos, CA homeowners’ guide to insulation services

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

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