Williams Roofing vs Star Waterproofing and Roofing
East Bay Roofing Comparison · Updated January 2026
| Williams Roofing | Star Waterproofing and Roofing | |
|---|---|---|
| Rating | ★ 4.6 | ★ 4.3 |
| Years Licensed | 32 years | 8 years |
| License # | 687391 | 1036279 |
| Workers' Comp | ✓ Yes | ✓ Yes |
| Bond Amount | $25,000 | $25,000 |
| Location | Fremont, CA | Walnut Creek, CA |
| Website | williamsroofing.net | www.starwaterproofingco.com |
Our Analysis
Star Waterproofing and Roofing operates out of Walnut Creek in Contra Costa County and reports 8 years of licensure with an active status. Customer feedback often emphasizes diagnosing leaks, explaining recommended repairs, and providing detailed estimates. Reviews frequently mention work on decks, balconies, and flat or low-slope roofs, including projects for multi-unit and commercial buildings. Customers also note professionalism, timeliness, and attention to protecting surrounding areas during construction, with some mentions of follow-up support after completion. Star also carries workers’ compensation coverage and maintains a $25,000 bond, though feedback includes occasional concerns from some customers related to communication or service experiences.
Why choose Williams Roofing?
- ✓ You want a Fremont-based contractor serving Alameda County, with a long licensing history (32 years) and active status.
- ✓ Your project is primarily residential roof repair or replacement, including leak-related issues.
- ✓ You value communication during scheduling and throughout the job, based on customer feedback.
- ✓ You want to factor in basic risk credentials: workers’ compensation coverage and a $25,000 bond are listed.
Why choose Star Waterproofing and Roofing?
- ✓ You’re located closer to Walnut Creek or Contra Costa County and want a contractor based in that area.
- ✓ Your project involves decks, balconies, or flat/low-slope roofing, including waterproofing-type work mentioned in customer feedback.
- ✓ You prefer detailed estimates and explanations of leak diagnosis and repair recommendations.
- ✓ You’re comfortable weighing mixed customer experiences, including some reported concerns about communication or service.
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Frequently Asked Questions
Yes. Both are listed with an active license status, workers’ compensation coverage, and a $25,000 bond.
Williams Roofing is described as providing residential roofing services, including roof replacement and repair work, with feedback referencing leaks and skylight-related roof components.
Star Waterproofing and Roofing is frequently referenced for work on decks, balconies, and flat or low-slope roofs, including multi-unit and commercial projects.
Williams Roofing is based in Fremont (Alameda County), while Star Waterproofing and Roofing is based in Walnut Creek (Contra Costa County). Location can be a practical factor when choosing a contractor for nearby scheduling and site access.
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.