Alpha Roofing vs Star Waterproofing and Roofing
East Bay Roofing Comparison · Updated January 2026
| Alpha Roofing | Star Waterproofing and Roofing | |
|---|---|---|
| Rating | ★ 5.0 | ★ 4.3 |
| Years Licensed | 1 years | 8 years |
| License # | 1129832 | 1036279 |
| Workers' Comp | ✓ Yes | ✓ Yes |
| Bond Amount | $25,000 | $25,000 |
| Location | Oakland, CA | Walnut Creek, CA |
| Website | alpharoofing.com | www.starwaterproofingco.com |
Our Analysis
Alpha Roofing is based in Oakland and customer feedback references residential roof replacement and repair-related work, including leak assessment and temporary repairs. Reported service examples include projects across the Bay Area, with locations mentioned such as San Jose, Cupertino, Palo Alto, and surrounding communities. Customer descriptions emphasize estimates, clear explanations of scope, updates during work, punctual crews, cleanup, and on-time completion.
Star Waterproofing and Roofing is based in Walnut Creek. Customer feedback highlights leak diagnosis and explanations of recommended repairs, along with detailed estimates and responsiveness. Reviews also reference work beyond typical pitched-roof repairs, including decks, balconies, and flat or low-slope roofs, and mention projects for multi-unit and commercial buildings. Feedback is described as mixed overall, with some customers reporting dissatisfaction related to communication or service experiences, alongside reports of professionalism, timeliness, and follow-up support.
Why choose Alpha Roofing?
- ✓ Oakland-based option with reported Bay Area project examples (including San Jose, Cupertino, and Palo Alto) mentioned in customer experiences.
- ✓ Customer feedback emphasizes process elements such as estimates, clear scope explanations, and regular updates during the job.
- ✓ Reported project types include roof replacement, repairs, leak assessment, and temporary repairs.
- ✓ Listed credentials include active license status, workers’ compensation coverage, and a $25,000 bond; the company is listed as licensed for 1 year.
Why choose Star Waterproofing and Roofing?
- ✓ Walnut Creek-based contractor listed as licensed for 8 years, with active license status, workers’ compensation coverage, and a $25,000 bond.
- ✓ Customer feedback often mentions leak diagnosis, detailed estimates, and clear explanations of recommended repairs.
- ✓ Reviews reference a broader set of surfaces and building types, including decks, balconies, flat/low-slope roofs, and multi-unit or commercial projects.
- ✓ Feedback is described as mixed, with some reports of communication or service concerns alongside notes about professionalism, timeliness, and follow-up support.
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Frequently Asked Questions
Yes. Both Alpha Roofing and Star Waterproofing and Roofing are listed as carrying workers’ compensation coverage and maintaining a $25,000 bond.
Alpha Roofing is based in Oakland, Alameda County, California. Star Waterproofing and Roofing is based in Walnut Creek, Contra Costa County, California.
Alpha Roofing is associated with roof replacement and repair-related work, including leak assessment and temporary repairs. Star Waterproofing and Roofing is associated with leak diagnosis and repairs, plus work on decks, balconies, and flat or low-slope roofs, including multi-unit and commercial buildings.
Alpha Roofing is listed as licensed for 1 year. Star Waterproofing and Roofing is listed as licensed for 8 years.
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.