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Alcor Solar vs Precise Roofing Inc
Contra Costa General Contractors Comparison · Updated March 2026
This comparison isn't meaningful—you're choosing between a specialized solar pool heating company and a general roofing contractor serving completely different needs.
| Alcor Solar | Precise Roofing Inc | |
|---|---|---|
| Rating | ★ 3.7 | ★ 4.8 |
| Years Licensed | 37 years | 2 years |
| License # | 559721 | 1111816 |
| Workers' Comp | ✓ Yes | ✓ Yes |
| Bond Amount | $25,000 | $25,000 |
| Location | Concord, CA | Walnut Creek, CA |
| Website | www.alcorsolar.com | www.preciseroofingca.com |
Key Differences
What Customers Say
Alcor Solar
Customers report effective pool heating results and long-term relationships spanning decades, but note inconsistent scheduling practices and communication style variations.
Precise Roofing Inc
Customers consistently emphasize clear communication throughout projects, ahead-of-schedule completion, thorough inspections, and detail-oriented installation work.
Key Takeaway: Review patterns reflect different service types rather than quality differences—Alcor's feedback centers on ongoing service relationships for specialized equipment, while Precise's emphasizes project management for one-time roofing installations.
Customer Reviews
Alcor Solar
My family first used Alcor Solar when our first pool solar panels were installed in the 90's. We had the roof redone in 2013 and had updated pool solar panels installed then. We recently had Alcor com...
We were referred to Alcor Solar by our pool company and the referral was well justified. When they initially came to our home, they surveyed our roofs for the best panel location and measured the siz...
We got solar pool heating installed and every day in the spring, summer and fall our pool is at 80-85 degrees depending on where we set it. In the summer the pool can actually get too warm so we simp...
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 Alcor Solar if...
- ✓ You need solar pool heating installed or serviced—this is Alcor Solar's exclusive specialty and Precise Roofing doesn't offer this service
- ✓ Your pool heating system is older and you value working with a contractor who has diagnosed panel degradation and roof compatibility issues across nearly four decades
- ✓ You're willing to work around potential scheduling inconsistencies in exchange for deep expertise in this specific niche market
- ✓ You need someone familiar with coordinating solar panel work during roof replacements, as Alcor has handled these transitions with long-term customers
Consider Precise Roofing Inc if...
- ✓ You need actual roofing work—leak repair, storm damage restoration, full replacement, shingle work, or skylight installation—which is Precise Roofing's business
- ✓ You value consistent communication and regular project updates, which customers repeatedly highlight in feedback
- ✓ Your timeline is tight and you appreciate contractors who complete work ahead of schedule, as multiple customers report
- ✓ You want thorough roof inspections that identify hidden damage beyond the obvious problem areas, which Precise's detail-oriented approach emphasizes
Questions to Ask Before Hiring
- → If you need roofing work, ask Precise Roofing for references from projects completed in the past year to understand their work quality despite being licensed only 2 years
- → If you need solar pool heating, ask Alcor Solar about their current scheduling practices and how they provide advance notice for service appointments, given mixed customer feedback on this issue
- → Clarify exactly what work you need done—if you're replacing your roof and have solar pool heating panels, ask your roofing contractor about their experience working around existing solar thermal systems
The Bottom Line
This comparison only makes sense if you're unclear about what each company actually does. If you need solar pool heating installed or serviced, Alcor Solar is your only option here—they bring 37 years of specialized experience despite some scheduling consistency issues. If you need roofing work like leak repair, storm damage restoration, or full replacement, Precise Roofing is your contractor, with strong customer feedback on communication and execution that mitigates concerns about their shorter 2-year track record. Don't hire a roofing company for solar pool heating or a solar pool heating company for roofing. Identify your actual project need first.
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Frequently Asked Questions
Precise Roofing Inc specializes in traditional roofing services, not solar thermal pool heating systems. If you're replacing your roof and have existing solar pool heating panels, you'd need to coordinate separately with a solar pool heating specialist like Alcor Solar for panel removal and reinstallation. This is a common scenario that Alcor has handled with long-term customers.
No, Alcor Solar specializes exclusively in solar pool heating installations and maintenance—they don't perform roof replacements, leak repairs, or other general roofing services. Their roof-related expertise is limited to assessing structural suitability for solar panel installation and weight distribution.
Two years is relatively new in the roofing industry, which matters most for complex projects or diagnosing hidden damage that experienced contractors spot faster. However, customer feedback consistently highlights their thorough inspections, attention to detail, and professional execution. Ask for recent references and confirm they've handled projects similar to yours in scope and complexity.
You'd hire both for their respective specialties—there's no overlap in services. Precise Roofing would handle your roof replacement or repairs, while Alcor Solar would manage your solar pool heating system. If you have existing solar panels and need roof work, coordinate the timing so panels can be temporarily removed and properly reinstalled.
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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 12, 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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