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Bay Valley Roofing specializes in roofing and gutters; installs solar power systems; and builds home additions for homeowners throughout Contra Costa, Alameda, and Solano Counties. As a Master Elite installer of GAF roofing products, the family-owned and operated company is qualified to work on a wide variety of roof types, including metal, composition shingles, PVC and GAF Timberline solar shingles.
Bay Valley Roofing emphasizes the importance of customer service in every aspect of its work. “Our number one priority is to build trust with our customers, and the best way to do that is prove we’re fully committed to quality service,” says Owner Raul Diaz. “From providing daily project updates to giving time of completion dates, we strive to involve them in the process as much as possible.”
Rated Highest in Quality and Helpful Expertise PERFORMANCEGUARANTEED
Company Credentials
- Liability Insurance
- Business Practices
- Current Complaint File
- Workers Compensation
- License Verification
- Legal & Finance
Diamond Certified Company Report SUMMARY UPDATE March 2025
Quick Summary
- Diamond Certified since 2012
- Installs and repairs all types of roofs for residential and light commercial clients in Contra Costa, Alameda, and Solano Counties
- Offers free roof inspections
- GAF President’s Club Member
Top News Updated
COMPANY MILESTONES
Bay Valley Roofing is celebrating its 36th anniversary in 2025.
Top Survey Responses
From a recent Diamond Certified Survey Response: “They’re the best. We’ve used them twice—once for a roof replacement and two years later for gutters. They’re a little pricier, but for the customer service you get, it’s great.”
From a recent Diamond Certified Survey Response: “The way Raul handled the project was amazing. He made sure his employees took safety precautions and cleaned up after themselves. The quality [of the work] was excellent and they got the job done quickly.”
Blogs & Articles
Bay Valley Roofing has published a new blog on its website titled, “Do You Need a Permit for a Roof Replacement?”
Bay Valley Roofing
Diamond Certified Video Reports on Bay Valley Roofing
Bay Valley Roofing - Diamond Certified Video Profile
- Diamond Certified Company ProfileVideo: Diamond Certified Company Profile
- Company StoryVideo: Diamond Certified Company Story
- 5 Useful AnswersVideo: Ryan Diaz, Owner of Bay Valley Roofing | 5 Useful Answers
- Expert Contributions
- Video: Innovations in Roofing Technology from Ryan Diaz of Bay Valley Roofing
- Video: Maximizing Solar Benefits to Offset Energy Costs from Ryan Diaz of Bay Valley Roofing
Diamond Certified Researched Articles on Bay Valley Roofing
Bay Valley Roofing installed the roof on this East Bay home.
Diamond Certified Researched Capabilities on Bay Valley Roofing
Service Area
Alameda County
Solano County
Main Services
- Aluminum Roofing
- Colored Metal Roofs
- Corrugated Metal Roofing
- Insulated Metal Roofing
- Metal Flashings
- Metal Roofing
- Metal Shingles
- Roof Replacement
- Roofing Installation
- Standing Seam Metal Roofs
- Steel Roofing
- Tin Roofing
- Cedar Shake
- Metal Shingles
- Residential Roofing
- Roof Coatings
- Roof Inspection
- Roof Leak Repair
- Roof Moss Removal
- Roof Repair
- Roof Replacement
- Roofing Installation
- Steel Roofing
Additional Services
Company Info
Hours
Closed
Contact
Capabilities Table
Company Name
Bay Valley RoofingManagers
Years in Industry
40+ (Owners)# of Employees
15License
982745Memberships
Building Trades Association (BTA), Better Business Bureau, National Roofing Contractors Association (NRCA), Western States Roofing Contractors Association (WSRCA)Founded
1989Payment Accepted
Key Factors
Select Photos From Bay Valley Roofing
Diamond Certified Expert Contributor Advice & Tips
Ryan Diaz is a second-generation roofing professional and vice president of Bay Valley Roofing, a Diamond Certified company since 2012. He can be reached at (925) 726-3792.
Ryan Diaz: Generational Synergy
By James Florence, Diamond Certified Resource Reporter
CONCORD — Despite being a roofer’s son, Ryan Diaz had little interest in nailing shingles or handling hot tar. However, when he applied his administrative proficiency alongside his father’s hands-on experience, it resulted in a potent combination. “My dad founded Bay Valley Contractors in 1989, and I started working with him on jobsites when I was about 12 years old,” he remembers. “However, my strengths were always more on the administra...
Bay Valley Roofing Website and External Feeds
FAQs
By Bay Valley Roofing
Bay Valley Roofing Ratings and Survey Responses (reviews)
Rated Highest in Quality and Helpful Expertise PERFORMANCEGUARANTEED
