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Capstone Roofing Inc vs Sterling Roofing Co
Sonoma Roofing Contractors Comparison · Updated March 2026
Capstone brings 13 additional years of experience and extensive customer feedback demonstrating proven processes, while Sterling lacks verifiable customer reviews.
| Capstone Roofing Inc | Sterling Roofing Co | |
|---|---|---|
| Rating | ★ 4.9 | ★ 4.0 |
| Years Licensed | 34 years | 21 years |
| License # | 629383 | 846392 |
| Workers' Comp | ✓ Yes | ✓ Yes |
| Bond Amount | $25,000 | $25,000 |
| Location | Santa Rosa, CA | Glen Ellen, CA |
| Website | www.capstoneroofing.biz | sterlingroofingco.com |
Key Differences
What Customers Say
Capstone Roofing Inc
Customers consistently praise Capstone for organized, efficient project execution with crews completing full roof replacements in a single day followed by thorough cleanup and clear communication throughout.
Key Takeaway: Capstone has substantial customer feedback validating their processes and reliability, while Sterling's limited review history provides no verifiable insight into their work quality or customer experience despite 21 years in business.
Customer Reviews
Capstone Roofing Inc
These guys are amazing. They replaced the roof in one day and price was very competitive. The crew was so nice. I recommend them and would hire them again.
When I needed a new roof recently, I first turned to Capstone Roofing for an estimate. My husband and I had a new roof installed on our former home in 2001 by Capstone. Our experiences with the owner,...
The Capstone did a great job and finished in just one day! They even did some nice follow up for us by cleaning up our rain gutters.
Sterling Roofing Co
Found some leaking into the house . Callled another place , had to leave a message .Everybody was busy as a lot of rain was happening . Decided I couldn't sit and wait . Tried Sterling .He answered . ...
Consider Capstone Roofing Inc if...
- ✓ Your roof replacement involves an older home where hidden damage is likely and you need a contractor with proven experience diagnosing and addressing surprises during tear-off
- ✓ You value predictable scheduling and want evidence that crews complete work as promised, with customer feedback showing consistent one-day completions and thorough cleanup
- ✓ Your project has timing constraints such as upcoming rain or coordination with solar installation, where Capstone's documented responsiveness matters
- ✓ You need assistance with insurance documentation or claims, an area specifically mentioned in their customer feedback
Consider Sterling Roofing Co if...
- ✓ You have a direct referral from someone who has used Sterling and can personally vouch for their work quality and communication
- ✓ You're in Glen Ellen and prefer working with the most local contractor, though both serve the broader Sonoma County area
- ✓ You're comfortable evaluating a contractor primarily on license tenure and insurance status rather than verified customer feedback
- ✓ Your project is straightforward leak repair where Sterling's noted project type aligns with your need
Questions to Ask Before Hiring
- → Ask Sterling directly for references from recent roof replacement projects similar to yours, including contact information you can verify
- → Ask Sterling how they handle scheduling, cleanup, and communication throughout the project, and request specifics about their crew size and timeline expectations
- → Ask Capstone about the post-installation concerns mentioned in some reviews on larger or multi-unit projects, and what warranties or follow-up processes they provide
- → Ask both contractors to walk your specific roof and explain what complications they anticipate based on your home's age and condition
The Bottom Line
Capstone Roofing Inc is the stronger choice for most homeowners who need to hire this week. Their 34 years of experience, combined with extensive customer feedback documenting efficient execution, clear communication, and reliable scheduling, provides the confidence you need when making a significant investment. Sterling's 21 years of licensure and proper insurance are solid credentials, but the absence of verifiable customer reviews creates unnecessary risk when you have an alternative with proven performance. If you have a direct personal referral for Sterling from someone whose judgment you trust, they may be worth considering. Otherwise, Capstone offers both the longest track record and the documented proof that their processes deliver results.
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Frequently Asked Questions
This gap is significant and worth investigating directly with Sterling. Some established contractors simply don't prioritize online reviews, while others may work primarily through repeat clients or referrals. However, in 2024, the absence of verifiable customer feedback makes it harder for new clients to assess service quality, communication style, and reliability. Ask Sterling directly for references you can contact.
Yes, particularly for older homes common in Sonoma County. Capstone's additional 13 years means more experience identifying hidden rot, handling unexpected structural issues during tear-off, and problem-solving when complications arise. Their 34 years also means they've navigated more regional challenges like fire recovery and weather-related damage specific to the area. For straightforward replacements on newer homes, the gap matters less.
The feedback references concerns on larger or multi-unit projects specifically, not typical single-family homes. This suggests potential capacity issues when scaling up, but doesn't appear to be a pattern on standard residential reroofs where Capstone receives consistently positive feedback. Ask Capstone directly about their warranty process and how they handle any post-installation concerns that arise.
Owner involvement can signal attentive service or a very small operation depending on context. With Sterling's limited review data, it's unclear whether high involvement translates to personalized service or indicates limited crew capacity. Ask Sterling about their team size and whether the owner will be on-site during your project. Capstone's moderate involvement with strong crew performance suggests established systems that don't require constant owner oversight.
Looking for the Best?
See our ranked list of top roofing contractors in Sonoma.
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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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