Tri Valley Roofing vs Thor Contracting Corporation
East Bay Roofing Comparison · Updated January 2026
| Tri Valley Roofing | Thor Contracting Corporation | |
|---|---|---|
| Rating | ★ 5.0 | ★ 4.9 |
| Years Licensed | 3 years | 4 years |
| License # | 1100411 | 1093228 |
| Workers' Comp | ✓ Yes | ✓ Yes |
| Bond Amount | $25,000 | $25,000 |
| Location | Castro Valley, CA | El Sobrante, CA |
| Website | www.trivalleyroofing.com | thorcontractingcorporation.com |
Our Analysis
Service scope is more specifically detailed for Tri Valley Roofing, with customer-described work including roof replacement, roof repairs and maintenance, gutter installation, skylight work, solar tubes, and dry rot repairs. Tri Valley Roofing is also described as serving the surrounding East Bay and handling residential projects ranging from targeted repairs to full roof and gutter replacements, including accessory structures. Another operational detail mentioned for Tri Valley Roofing is the use of photos to document conditions and progress, including for insurance-related needs.
For Thor Contracting Corporation, the provided information focuses more on how projects are managed rather than listing specific add-on services. Customers describe timely arrivals, clear communication about scope and pricing, efficient scheduling, and fast turnaround. Thor is also described as coordinating around inspections and permits and as being mindful of budget constraints through competitive bids.
Why choose Tri Valley Roofing?
- ✓ You want a contractor described as providing a broad set of roofing-related services, including gutters, skylights, solar tubes, and dry rot repairs.
- ✓ Your project may benefit from photo documentation of roof conditions and progress, including for insurance-related communication.
- ✓ You are located in or near Castro Valley or elsewhere in the East Bay and want a contractor described as serving that surrounding area.
- ✓ You prefer a company customers describe as attentive to detail, jobsite cleanliness, and safety practices during residential roofing work.
Why choose Thor Contracting Corporation?
- ✓ You value an organized process with clear communication about scope and pricing from planning through completion.
- ✓ You want coordination around inspections and permits as part of the project workflow.
- ✓ You are located near El Sobrante or in Contra Costa County and want a contractor based in that area.
- ✓ Budget is a key factor, and you want a company customers describe as working within budget and providing competitive bids.
Get a Quote
What do you need help with?
When do you need this done?
Where should we send quotes?
Confirm Submission
By submitting, you agree to be contacted by a licensed contractor.
Frequently Asked Questions
Yes. Both Tri Valley Roofing and Thor Contracting Corporation are listed as carrying workers’ compensation coverage and holding a $25,000 bond.
Tri Valley Roofing is based in Castro Valley, Alameda County, California. Thor Contracting Corporation is based in El Sobrante, Contra Costa County, California.
Tri Valley Roofing has more specific service types listed, including roof replacement, repairs and maintenance, gutter installation, skylight work, solar tubes, and dry rot repairs.
Yes. Thor Contracting Corporation is described as willing to coordinate around inspections and permits.
Other East Bay Roofing Comparisons
Data Sources: License information from California CSLB. Ratings and reviews from Google. Last verified January 13, 2026.
This comparison is based on publicly available information. We recommend getting multiple quotes and verifying all credentials directly before hiring.