Innovation Roofing System vs Thor Contracting Corporation
East Bay Roofing Comparison · Updated January 2026
| Innovation Roofing System | Thor Contracting Corporation | |
|---|---|---|
| Rating | ★ 5.0 | ★ 4.9 |
| Years Licensed | 6 years | 4 years |
| License # | 1063172 | 1093228 |
| Workers' Comp | ✓ Yes | ✓ Yes |
| Bond Amount | $25,000 | $25,000 |
| Location | Antioch, CA | El Sobrante, CA |
| Website | innovationroofingsystems.com | thorcontractingcorporation.com |
Our Analysis
In terms of service approach, Innovation Roofing System is described as providing on-site consultation, project planning, completion, and a final inspection, with customer feedback emphasizing professionalism, organization, punctual arrival, efficient work habits, and clear explanations about roofing needs and project details. Thor Contracting Corporation is described in customer feedback as professional and responsive, with emphasis on timely arrivals, clear communication about scope and pricing, organized planning through completion, and efficient scheduling with fast turnaround times. Thor’s feedback also mentions jobsite cleanliness and coordination around inspections and permits, as well as working within budget and providing competitive bids.
Geographically, both operate within Contra Costa County, but their base cities differ, which may matter for local availability and convenience depending on where the property is located.
Why choose Innovation Roofing System?
- ✓ Based in Antioch, which may be convenient if your project is in or near the Antioch area of Contra Costa County.
- ✓ Licensed for 6 years with an active license status, plus workers’ compensation coverage and a $25,000 bond.
- ✓ Customer feedback commonly highlights an organized process from consultation through final inspection, including punctuality and efficient work habits.
- ✓ Reviews frequently mention clear explanations of roofing needs and project details, which may help if you want more guidance during planning.
Why choose Thor Contracting Corporation?
- ✓ Based in El Sobrante, which may be a better geographic fit for projects closer to West/Central Contra Costa County.
- ✓ Licensed for 4 years with an active license status, plus workers’ compensation coverage and a $25,000 bond.
- ✓ Customer feedback often notes responsiveness, clear communication about scope and pricing, and an organized process from planning through completion.
- ✓ Reviews also mention efficient scheduling, fast turnaround times, jobsite cleanliness, and coordination around inspections and permits.
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Frequently Asked Questions
Yes. Both list an active license status, workers’ compensation coverage, and a $25,000 bond.
Innovation Roofing System has been licensed for 6 years, while Thor Contracting Corporation has been licensed for 4 years.
Innovation Roofing System is based in Antioch, and Thor Contracting Corporation is based in El Sobrante.
The provided description notes on-site consultation, project planning, completion of the work, and a final inspection, along with communication about roofing needs and scope.
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.