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Acker Roofing vs Mortensen Roofing & Gutters
Contra Costa Roofing Contractors Comparison · Updated March 2026
Mortensen brings three times the experience (36 years vs 12), while Acker shows broader project scope and more frequent coordination experience.
| Acker Roofing | Mortensen Roofing & Gutters | |
|---|---|---|
| Rating | ★ 4.9 | ★ 5.0 |
| Years Licensed | 12 years | 36 years |
| License # | 993338 | 583533 |
| Workers' Comp | ✓ Yes | ✓ Yes |
| Bond Amount | $25,000 | $25,000 |
| Location | Concord, CA | Concord, CA |
| Website | ackerroofing.com | www.mortensenroofing.com |
Key Differences
What Customers Say
Acker Roofing
Customers consistently praise Acker for responsive communication, thorough inspections with clear explanations, and professional coordination across complex scheduling and multi-trade scenarios.
Mortensen Roofing & Gutters
Customers emphasize Mortensen's straightforward professionalism, reasonable pricing, and long-term durability of completed work, particularly on cement tile projects.
Key Takeaway: Acker's reviews highlight proactive communication and coordination complexity, while Mortensen's feedback centers on simplicity, direct owner interaction, and workmanship that proves itself over decades rather than through frequent updates.
Customer Reviews
Acker Roofing
They are quick to respond and have work quality they honor the work warranty no questions asked why rain or shine they come to repair
Acker Roofing did a great job of replacing our roof. They listened to my specific needs, found a good solution, and troubleshooted problem areas. They were able to fit us into their schedule and the j...
Dean and Acker came recommended to us by a State Farm insurance agent, and we can see why. Dean quickly turned around a fair quote for roofing our house. Rodigo and his partner worked diligently on ev...
Mortensen Roofing & Gutters
Mortensen Roofing roofed our house 35 years ago and it still stand strong. That is until a branch came and chipped a cement tile - they were great and helping me procure a new one a tiny bit different...
Very reasonably priced. Quality workmanship. Timely and consistent with deign.
From the estimate forward, I found working with the owner, John Mortensen, to be easy and professional. His bid was clearly the best I received. His crew, especially the supervisor, Humberto were skil...
Consider Acker Roofing if...
- ✓ You need solar panel removal and reinstallation coordinated with your roof project, which Acker has documented experience managing
- ✓ Your project involves storm damage assessment, permitting coordination, or insurance documentation requirements where thorough inspection notes matter
- ✓ You're dealing with ancillary issues like dry rot, ventilation upgrades, or attic insulation that you'd prefer to bundle with roofing work
- ✓ You value frequent project updates and detailed explanations during the estimate process
Consider Mortensen Roofing & Gutters if...
- ✓ You have a cement tile roof requiring repair or replacement, which appears to be Mortensen's specialty area
- ✓ You prefer working directly with the owner throughout the project rather than through project managers
- ✓ Your home is older and you want a contractor who's seen decades of how roofing systems age and fail in this specific climate
- ✓ You value a straightforward, no-frills approach over detailed progress communication
Questions to Ask Before Hiring
- → Ask Mortensen about their experience with your specific roof type if it's not cement tile, and request references for similar projects
- → Ask Acker how they handle owner communication on larger projects, given their moderate owner involvement compared to Mortensen's high involvement
- → Confirm with both how long their current crew has worked together and who will supervise your specific project
- → Ask both for timelines based on current workload, as veteran contractors may have different scheduling availability than established ones
The Bottom Line
If you have a cement tile roof, prefer high owner involvement, or simply want the peace of mind that comes from 36 years of local experience, Mortensen is the clear choice. For projects involving solar coordination, insurance documentation, multi-trade work, or situations where you need detailed communication and scheduling flexibility, Acker's recent track record shows stronger capability in those areas. Both are properly licensed and insured Concord contractors with reasonable pricing. Your decision should hinge on project complexity and specialty match rather than baseline competence, which both clearly demonstrate.
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Frequently Asked Questions
It matters most when surprises emerge during tear-off, like hidden water damage, outdated framing, or code compliance issues that weren't visible during inspection. A contractor who's been through thousands of projects has seen more variations and can pivot without delays. For truly routine work on newer homes, the gap narrows.
Review data reflects recent projects that customers chose to write about, not lifetime capability. Mortensen may handle diverse work but customers specifically praised their cement tile expertise. If you need services beyond Mortensen's documented project types, ask directly about their experience in those areas rather than assuming they don't offer them.
Acker has documented experience with solar panel removal and reinstallation coordination across multiple reviews, suggesting this is routine for them. Mortensen's feedback doesn't mention solar work, so you'd need to ask whether they have established relationships with solar companies and how they typically handle that coordination.
Mortensen's high owner involvement suggests you'll likely interact directly with the owner during estimates, decisions, and possibly during work. Acker's moderate involvement means you may work with project managers or crew leads for day-to-day items. Neither approach is better, but consider which matches your communication preference and availability during the project.
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See our ranked list of top roofing contractors in Contra Costa.
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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 11, 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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