TSP Roofing and Solar vs Star Waterproofing and Roofing
East Bay Roofing Comparison · Updated January 2026
| TSP Roofing and Solar | Star Waterproofing and Roofing | |
|---|---|---|
| Rating | ★ 5.0 | ★ 4.3 |
| Years Licensed | 3 years | 8 years |
| License # | 1096233 | 1036279 |
| Workers' Comp | ✓ Yes | ✓ Yes |
| Bond Amount | $25,000 | $25,000 |
| Location | Hercules, CA | Walnut Creek, CA |
| Website | www.tsproofingandsolar.com | www.starwaterproofingco.com |
Our Analysis
Star Waterproofing and Roofing is based in Walnut Creek and has been licensed longer (8 years versus 3 years for TSP). It is described as knowledgeable in diagnosing leaks and explaining recommended repairs, with reviews mentioning detailed estimates and responsiveness. The work referenced for Star includes decks, balconies, and flat or low-slope roofs, and it is noted for handling projects for multi-unit and commercial buildings. Reviews also mention protecting surrounding areas during construction and some follow-up support.
Both companies have active licenses, workers’ compensation coverage, and the same bond amount. Based on the summaries, TSP is positioned around combined roofing-and-solar residential projects, while Star is positioned around waterproofing/roofing needs that can extend to larger or more complex building types. Star’s feedback includes a mix of positive outcomes and some reported concerns about communication or service experiences.
Why choose TSP Roofing and Solar?
- ✓ You want one contractor for both roofing and solar work, including solar panels, batteries, and inverter/system repairs.
- ✓ Your project is residential in Contra Costa County and you prefer a Hercules-based company.
- ✓ You may need related electrical work (such as a main panel upgrade) coordinated with roof/solar work.
- ✓ You value help with project coordination and permitting as part of the overall process.
Why choose Star Waterproofing and Roofing?
- ✓ Your project involves waterproofing-related roofing issues such as leak diagnosis, or work on decks and balconies.
- ✓ You have a flat or low-slope roof, or a multi-unit/commercial building where similar work is commonly referenced.
- ✓ You prefer a Walnut Creek-based contractor with a longer licensing history (8 years).
- ✓ You want detailed estimates and an emphasis on protecting surrounding areas during construction.
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Frequently Asked Questions
Yes. Both are listed with active license status, workers’ compensation coverage, and a $25,000 bond.
TSP Roofing and Solar is described as performing solar panel and battery installations, inverter/system repairs, and related electrical work.
Star Waterproofing and Roofing is described as completing work on decks, balconies, and flat or low-slope roofs, including multi-unit and commercial projects.
TSP Roofing and Solar is based in Hercules, and Star Waterproofing and Roofing is based in Walnut Creek.
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.