Calisco Roofing vs Thor Contracting Corporation
East Bay Roofing Comparison · Updated January 2026
| Calisco Roofing | Thor Contracting Corporation | |
|---|---|---|
| Rating | ★ 5.0 | ★ 4.9 |
| Years Licensed | 3 years | 4 years |
| License # | 1105093 | 1093228 |
| Workers' Comp | ✓ Yes | ✓ Yes |
| Bond Amount | $25,000 | $25,000 |
| Location | Brentwood, CA | El Sobrante, CA |
| Website | caliscoroofing.com | thorcontractingcorporation.com |
Our Analysis
In terms of services and project types, Calisco Roofing is specifically described as focusing on residential roofing and is associated with inspections, urgent leak response, maintenance, and roof replacement. Customer-referenced examples for Calisco include low-slope roofing, tile roof maintenance and repairs, PVC membrane roofing, torch-down roofing, gutter cleaning, and roof vent/flashing installation. Thor Contracting Corporation’s description does not list specific roof systems or task examples, but customer feedback emphasizes an organized end-to-end process.
Customer summaries for both companies highlight responsiveness, clear communication about scope and pricing, and orderly jobsites. Calisco Roofing is frequently associated with thorough inspections and documentation such as before-and-after photos. Thor Contracting Corporation is frequently associated with efficient scheduling, fast turnaround, and coordination around inspections and permits, with some customers noting budget alignment and competitive bids.
Why choose Calisco Roofing?
- ✓ You want a contractor explicitly described as providing residential inspections, leak repairs, maintenance, and roof replacement in Contra Costa County.
- ✓ Your project involves specific roof types or tasks mentioned in customer examples (e.g., low-slope work, tile maintenance/repairs, PVC membrane, torch-down, gutters, vent/flashing).
- ✓ You value detailed inspection practices and documentation such as before-and-after photos, based on customer feedback.
- ✓ You prefer a Brentwood-based contractor and want clear explanations of options and scope during on-roof inspections.
Why choose Thor Contracting Corporation?
- ✓ You prefer an El Sobrante-based contractor serving Contra Costa County and want an organized process from planning through completion.
- ✓ Scheduling speed and fast turnaround are priorities, as customers often mention efficient timelines.
- ✓ You want coordination support around inspections and permits, which is specifically referenced in customer feedback.
- ✓ Budget fit matters, since some customers mention the company working within budget and providing competitive bids.
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Frequently Asked Questions
Yes. Both Calisco Roofing and Thor Contracting Corporation are listed with active license status, carry workers’ compensation coverage, and maintain a $25,000 bond.
Calisco Roofing is described with specific residential services (inspections, leak repairs, maintenance, roof replacement) and customer-referenced project examples such as low-slope roofing, tile repairs, PVC membrane, torch-down, gutter cleaning, and vent/flashing installation.
Thor Contracting Corporation is described by customers as willing to coordinate around inspections and permits as part of the project process.
Calisco Roofing is based in Brentwood, Contra Costa County, California. Thor Contracting Corporation is based in El Sobrante, Contra Costa County, California.
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.