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Star Waterproofing and Roofing vs Precise Roofing Inc
Contra Costa General Contractors Comparison · Updated March 2026
Star Waterproofing brings four times the licensure history and specialized leak diagnosis expertise, while Precise Roofing demonstrates strong execution despite being newly licensed.
| Star Waterproofing and Roofing | Precise Roofing Inc | |
|---|---|---|
| Rating | ★ 4.3 | ★ 4.8 |
| Years Licensed | 8 years | 2 years |
| License # | 1036279 | 1111816 |
| Workers' Comp | ✓ Yes | ✓ Yes |
| Bond Amount | $25,000 | $25,000 |
| Location | Walnut Creek, CA | Walnut Creek, CA |
| Website | www.starwaterproofingco.com | www.preciseroofingca.com |
Key Differences
What Customers Say
Star Waterproofing and Roofing
Customers consistently highlight Star's ability to diagnose difficult leaks and provide detailed project evaluations, with strong performance on complex waterproofing and multi-unit properties.
Precise Roofing Inc
Precise Roofing earns praise for clear communication throughout projects, finishing ahead of schedule, and meticulous attention to installation details on residential roof replacements.
Key Takeaway: Star's reviews emphasize diagnostic expertise and problem-solving for complex issues, while Precise's reviews focus on execution efficiency and communication on more straightforward replacement projects.
Customer Reviews
Star Waterproofing and Roofing
Gilber, Linda and the crew are top notch professionals. They waterproofed an outside deck at our building in San Francisco and did an A+ job. They were on time and very responsive to my needs and the ...
I recently hired Star Waterproofing to waterproof my 3 outdoor decks in S.F., they were leaking everywhere . With the amount of rain we have been receiving these past few years , I needed a specialis...
I recently hired Star to replace the flat commercial roof for an apartment building in Oakland (6,500 sq ft). I had an excellent experience from start to finish, and I'm glad to leave a glowing recomm...
Precise Roofing Inc
Throughout, the roofing project was managed with caution and open communication. The process was easy and comforting, and the finished product seemed sturdy and well-built.
The entire procedure was simple and stress-free. The craftsmanship is self-evident.
The roofing, vents, and flashing were all expertly placed. The finished product truly demonstrates the attention to detail.
Consider Star Waterproofing and Roofing if...
- ✓ Your project involves difficult-to-locate leaks, deck or balcony waterproofing, or flat/low-slope roofing systems where specialized diagnostic skills matter
- ✓ You own a multi-unit building or have a larger commercial-style roof that benefits from experience managing complex scopes
- ✓ You value a contractor who has navigated 8 years of varied scenarios and can anticipate hidden complications before they become costly surprises
- ✓ You need coordination of related exterior work like painting as part of a broader building envelope project
Consider Precise Roofing Inc if...
- ✓ Your project is a straightforward roof replacement or repair on a pitched residential roof without complex waterproofing needs
- ✓ You're working with insurance for storm damage and need a contractor experienced in adjuster coordination
- ✓ Timeline is important and you value a contractor with a pattern of finishing ahead of schedule
- ✓ You have a historic home requiring period-appropriate materials and restoration techniques
Questions to Ask Before Hiring
- → Ask Precise Roofing for references from projects completed in their first year of licensure and how long their current crew has worked together
- → Ask Star about their process for post-completion follow-up given some customer reports of missed callbacks
- → If your project involves both roofing and waterproofing, ask each contractor how many similar combination projects they've completed in the past two years
- → Ask both contractors how they handle unexpected discoveries during tear-off and what their typical change order process looks like
The Bottom Line
For most roofing projects involving leak diagnosis, flat roofs, or any waterproofing component, Star Waterproofing's 8-year track record and specialized expertise make them the stronger choice despite occasional follow-up gaps. Their experience advantage is meaningful when problems aren't straightforward or when tear-off reveals hidden issues. Precise Roofing is a solid option for traditional pitched roof replacements on single-family homes where their efficient execution and communication strengths shine, but their 2-year licensure history means less proven ability to handle the unexpected. If you're uncertain about your roof's condition or dealing with persistent leaks, experience depth matters—choose Star and confirm their post-project support process upfront.
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Frequently Asked Questions
For a straightforward shingle replacement on a typical pitched roof, the gap matters less—both contractors handle these projects successfully. The experience difference becomes significant when tear-off reveals unexpected damage, when leak sources are unclear, or when your project involves flat roofing or waterproofing systems. Star's 8 years means they've seen more failure patterns and can better anticipate complications.
Precise focuses on traditional roofing rather than specialized waterproofing for decks and balconies. If your project involves outdoor living spaces, balcony deck systems, or flat roof waterproofing, Star's explicit expertise in these areas represents a better match. For standard roof leak repairs, Precise's thorough inspection approach has worked well for their customers.
Star Waterproofing explicitly works on multi-unit properties and multi-building maintenance with experience coordinating larger scopes. Their reviews reference commercial-style roof areas and repeat work on apartment buildings. Precise's reviews focus on single-family residential projects, and their shorter time in business means less demonstrated capacity for larger property management relationships.
The follow-up concern appears in a small portion of reviews and relates to post-completion callbacks rather than during active projects. Their communication during work is described as responsive. If you're concerned, ask Star directly about their warranty service process and response timeline expectations. This is a process issue rather than a technical competency gap, unlike the fundamental experience difference between the two companies.
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How We Compare Contractors
License Verification
All license data is sourced from official California CSLB records and verified regularly.
Review Analysis
Customer reviews are aggregated from Google and analyzed to identify patterns in service quality.
Detailed Comparison
We analyze credentials, insurance, experience, and feedback to highlight meaningful differences.
Not all licensed contractors are created equal. While a valid license is the baseline requirement in California, contractors can vary significantly in experience, insurance coverage, and customer satisfaction.
- Experience matters: A contractor with 15+ years of experience has likely encountered and solved problems that newer contractors haven't faced yet.
- Workers' compensation protects you: If a contractor without workers' comp insurance has an employee injured on your property, you could be held liable.
- Reviews reveal patterns: Individual reviews can be misleading, but patterns across many reviews often reveal a contractor's true strengths and weaknesses.
- Bond amounts vary: A contractor's bond provides financial protection if they fail to complete work as agreed. Higher bonds offer more protection.
Taking time to compare contractors on these factors can save you from costly mistakes and help ensure your project is completed by a qualified professional.
Data Sources: License information from California CSLB. Ratings and reviews from Google. Last verified March 10, 2026.
This comparison is based on publicly available information. We recommend getting multiple quotes and verifying all credentials directly before hiring.
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