Bay Valley Insulation

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Bay Valley Insulation
45 SURVEYS
1 CONSECUTIVE YEAR
SINCE JUNE 2025
CERT 2871

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45
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Customer Loyalty
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Helpful Expertise

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Bay Valley Insulation
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Bay Valley Insulation

Insulation
|
Alameda  Contra Costa  San Mateo  Santa Clara Counties
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45 SURVEYS
1 CONSECUTIVE YEAR
SINCE JUNE 2025
CERT 2871

Rated Highest in Quality & Helpful Expertise Performance Guaranteed

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Diamond Certified Researched Articles on Bay Valley Insulation

researched article

A Bay Valley Insulation technician works on a client's house.

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Bay Valley Insulation installs and removes cellulose and fiberglass insulation for residential and commercial clients in Alameda, Contra Costa, Santa Clara, and San Mateo Counties. The company’s access to a variety of insulation products allows it to develop a customized plan for each property, and it’s also qualified to perform minor duct repairs, conduct energy leakage inspections, install roof and foundation ventilation, and more.

Owner Guy Roth attributes much of Bay Valley Insulation’s success to its customer-focused business practices. “We prioritize giving people what they actually need, not just what can be sold,” he explains. “That often means adjusting our work to reflect what’s already in place and being honest about what type of insulation is truly necessary.”

Instead of following a one-size-fits-all model, Bay Valley Insulation takes the time to explain its customers’ options, answer their questions and educate them about the best insulation strategies for their homes or buildings. “Whether it’s a small attic job or a large remodel, we make the process easy for the client and make sure they’re fully satisfied with the outcome,” says Mr. Roth. “Insulation may just be one part of a construction project, but it makes a huge difference when it’s done properly, and we want our customers to feel that right away.”

Diamond Certified Researched Capabilities on Bay Valley Insulation

Service Area

serving area
Alameda County
Contra Costa County
Santa Clara County
San Mateo County
Serving Alameda, Contra Costa, Santa Clara and San Mateo Counties

Main Services

Insulation
  • Air Sealing
  • Attic Insulation
  • Blown In Insulation
  • Ceiling Insulation
  • Fiberglass Insulation
  • Foam Board Insulation
  • Garage Door Insulation
  • Insulation Removal
  • Rockwool Insulation
  • Roof Insulation
  • Spray Foam Insulation
  • Thermal Insulation

Additional Services

null

Company Info

Hours
Mon
08:00 am - 05:00 pm
Tue
08:00 am - 05:00 pm
Wed
08:00 am - 05:00 pm
Thu
08:00 am - 05:00 pm
Fri
08:00 am - 05:00 pm
Sat
Closed
Sun
Closed
Closed
Contact
Bay Valley Insulation

Capabilities Table

Company Name
Bay Valley Insulation
Managers
Guy Roth, Owner
Years in Industry
35 (Manager)
# of Employees
3
License
546944
Memberships
Better Business Bureau
Founded
1988
Payment Accepted
american express,
discover,
mastercard,
visa

Select Photos From Bay Valley Insulation

1 of 18Picture of The textured wall, marked by evenly spaced holes, hints at the meticulous preparation for insulation work by Bay Valley Insulation. This attention to detail reflects the company's commitment to quality outcomes, ensuring every project meets the highest standards. Copyright ©2025 Diamond Certified Resource - Bay Valley Insulation
The textured wall, marked by evenly spaced holes, hints at the meticulous preparation for insulation work by Bay Valley Insulation. This attention to detail reflects the company's commitment to quality outcomes, ensuring every project meets the highest standards. Copyright ©2025 Diamond Certified Resource
Picture of The textured wall, marked by evenly spaced holes, hints at the meticulous preparation for insulation work by Bay Valley Insulation. This attention to detail reflects the company's commitment to quality outcomes, ensuring every project meets the highest standards. Copyright ©2025 Diamond Certified Resource - Bay Valley Insulation
Picture of The subtle interplay of light and shadow on this building's exterior hints at the meticulous craftsmanship behind its insulation. Bay Valley Insulation is dedicated to quality outcomes, ensuring homes are not only energy-efficient but also visually appealing. This attention to detail reflects their commitment to excellence, earning them high customer satisfaction ratings. Copyright ©2025 Diamond Certified Resource - Bay Valley Insulation
Picture of A skilled technician from Bay Valley Insulation carefully navigates a ladder, preparing to insulate a home’s exterior. This attention to detail reflects the company’s commitment to quality outcomes, ensuring that every project meets the highest standards. With a focus on customer satisfaction, Bay Valley Insulation is recognized for its expertise and quality. Copyright ©2025 Diamond Certified Resource - Bay Valley Insulation
Picture of In a spacious, freshly coated interior, a worker meticulously applies insulation to the ceiling, embodying Bay Valley Insulation's commitment to quality outcomes. This attention to detail ensures optimal energy efficiency and comfort for future occupants. With a focus on high customer satisfaction ratings, Bay Valley Insulation transforms spaces with expertise. Copyright ©2025 Diamond Certified Resource - Bay Valley Insulation
Picture of The newly insulated garage stands ready, showcasing Bay Valley Insulation's commitment to quality outcomes. The bright, clean interior reflects the meticulous attention to detail that has earned the company high customer satisfaction ratings. This space is not just a structure; it’s a testament to the transformative power of expert insulation. Copyright ©2025 Diamond Certified Resource - Bay Valley Insulation
Picture of  In this attic space, the intricate arrangement of insulation and electrical conduits reflects the meticulous attention to detail that Bay Valley Insulation brings to every project. Their commitment to quality outcomes ensures that homes are not only energy-efficient but also safe. This dedication has earned them high customer satisfaction ratings. Copyright ©2025 Diamond Certified Resource - Bay Valley Insulation

Diamond Certified Expert Contributor Advice & Tips

Joel Schmidt is Sales Representative of Bay Valley Insulation, a Diamond Certified company. He can be reached at (510) 200-8924 or g.roth@bayvalleyinsulation.com.

Joel Schmidt is Sales Representative of Bay Valley Insulation, a Diamond Certified company. He can be reached at (510) 200-8924 or g.roth@bayvalleyinsulation.com.

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Bay Valley Insulation Ratings and Survey Responses (reviews)

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Bay Valley Insulation
45 SURVEYS
  • 4.5
  • star image
  • star image
  • star image
  • star image
  • star image
1 CONSECUTIVE YEARS
SINCE JUNE 2025
CERT 2871

Diamond Certified Ratings Dashboard

Customer Satisfaction

Customer Loyalty

Helpful Expertise

Company Credentials

  • Liability Insurance
  • Business Practices
  • Current Complaint File
  • Workers Compensation
  • License Verification
  • Legal & Finance
Bay Valley Insulation

Based in Fremont, CA

4.5 avg. star score from 45 Verified Customer Phone Survey Responses

(Reviews: Scroll down to read them.)

Our surveys of only verified real customers produce the country’s most accurate ratings of local companies. Bay Valley Insulation scored Highest in Quality and Helpful Expertise and passed the credential-based checks to earn Diamond Certified.

A Star Equivalent Score is calculated for each verified customer rating by weighting the 1–10 Quality score, the YES/NO Loyalty (intent to return) score and the YES/NO Helpful Expertise score. If Helpful Expertise wasn’t surveyed or didn’t apply, it’s simply not shown.