Metal roofing
Architectural shingles
Tile roofing
GAF
Flat & low-slopeFree roof inspection with deck photos before we talk money - GAF and Owens Corning certified installation
Meet the Thousand Oaks Team Behind Mercer Roofing Co Thousand Oaks
The crew that shows up at your door in Thousand Oaks is not a rotating cast of subcontractors. It’s a small, named group of people who have worked Conejo Valley roofs long enough to know exactly what our summers do to underlayment and what our winter winds do to flashing. Every one of them is background-checked, identity-verified, and badged under the Threshold Standard. You’ll know who is coming before they arrive, and they’ll hand you a photo ID at the door. That’s just how we work.
Styles & brands we work with





Our People
Mike R. – Lead Technician
Mike has been on Thousand Oaks roofs for over two decades, and he is the person we send when a leak has been “fixed” twice by someone else and the homeowner just wants the truth. He is a GAF and CertainTeed certified installer, which matters when you are dealing with manufacturer warranty requirements, and he is the one who trains every new hire on how we flash a chimney in this climate. Off the clock, Mike rebuilds old dirt bikes and has a soft spot for springer spaniels.
Sarah T. – Senior Installer
Sarah runs our tear-off and installation jobs, and she is the reason our job sites are cleaner when we leave than when we arrived. She holds Owens Corning and Tamko installation certifications and has a particular knack for steep-pitch work, which is a genuine safety challenge on a lot of older Newbury Park and Westlake Village homes. Sarah keeps a photo album of every roof she has installed since 2012, and she can tell you the address of each one from memory.
Luis M. – Service Coordinator
Luis is the first voice most customers hear when they call Mercer Roofing Co Thousand Oaks, and he’s the one making sure a real human answers the phone day or night. He schedules every visit, sends the name and photo of each technician before they arrive, and makes sure the written price is in your hands before a single shingle moves. Luis grew up in Thousand Oaks, knows the difference between traffic on Moorpark Road at 8 a.m. versus 8:15 a.m., and still plays in a Sunday league baseball team.
Danny K. – Apprentice
Danny joined the crew two years ago after leaving a framing job in Simi Valley, and he is working toward his own manufacturer certifications under Mike’s supervision. He’s the one carrying bundles and learning how our clay-tile roofs behave differently from our asphalt-shingle roofs, one roof at a time. Danny is the first to volunteer for the early morning load-outs, and he can identify more bird species from a rooftop than anyone else on the team.
One Standard, Every Job
Every Mercer Roofing Co Thousand Oaks crew member operates under the same expectation: do the work correctly the first time, document everything, and stand behind the result. That means a written price before any work starts, a written guarantee on every repair, and our 365-Day Done Right Promise if anything is not right within a year. Each location in the Threshold Group family is independently owned and operated, but the Threshold Verified standard is contractual, not optional. Uniformed. Photo-badged. Background-checked. Grant Whitlock, the owner of this location, holds the team to that standard on every single visit. If a repair fails, we come back free, no questions and no invoice. That promise is only as strong as the people we send, and we send people whose names you know.
Written by Grant Whitlock, Owner at Mercer Roofing Co Thousand Oaks, serving Thousand Oaks and the Conejo Valley since 2000.
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