A 50-year roof if the details are right.
The intersection
When a White Rock roof needs to outlast the salt air, standing-seam metal is the answer. On the ocean-facing sides we run 22-gauge coastal-grade steel — heavier than the 24-gauge we use inland — with Kynar-500 finish and concealed clips. That's the roof that drops off your maintenance list for the next four decades, with a written warranty covering every step.
Local intel
White Rock is one of the few spots on our route where we bump the panel gauge from 24 to 22 on the ocean-facing sides. It's about thickness — a heavier panel shrugs off the micro-flexing and small dings that airborne salt works into a thinner one over thirty years. The Kynar-500 finish carries a 40-year colour warranty in writing and handles UV and coastal moisture far better than the cheap polyester finishes some crews swap in. Every fastener is concealed-clip, never face-fastened — a face screw this close to the ocean is a five-year leak, because each exposed head turns into a corrosion point. Marine Drive homes with west-facing planes take the hardest weather on the whole route, and we've walked jobs where the last installer skipped the wind-uplift detail at the perimeter entirely. On Ocean Park addresses set back from the water, standard 24-gauge is fine — salt exposure drops off fast. Snap-lock at a 1.5-inch seam is the default, mechanically-seamed below 3:12 pitch. We recommend a five-year check on coastal metal instead of the usual ten, so any flashing issue gets caught before it opens up..
The detail
Panels are cut long so there are no lap joints in the field. Every clip is spaced to the pitch and the wind zone. Ridge, hip, and valley get custom flashings bent on site so the profile matches. Snap-lock or mechanically-seamed depending on the pitch.
Concealed fasteners don't back out over time. Hemmed panel edges lock into the flashing so wind can't lift them. The finish is Kynar 500 on every panel we run, which is what carries the 40-year colour warranty.
Cheap crews face-fasten the panels because it's faster. Every screw is a leak in year eight. They also skip the substrate detail. Metal needs a ventilated cavity or an ice-and-water membrane rated for high-temp, or you'll get condensation running down the underside.
Frequently asked
Coastal exposure works on every panel over the decades, and 22-gauge holds up noticeably longer than 24 in that environment. The material bump is modest — usually 10 to 15 percent — and it's the difference between a roof lasting 40 years and one lasting 60. We spec the heavier gauge on the ocean-facing planes only, so you're spending where it counts and not where it doesn't.
Yes, and it's the ideal surface for it. Solar mounts clamp straight to the standing seam without penetrating the panel — which matters even more near the ocean, where any hole becomes a future leak. Solar installers routinely prefer standing-seam metal on coastal homes for exactly that reason, and the Kynar-500 finish keeps its 40-year colour warranty with the array on top.
On exposed steel and cheap galvanized flashing, yes. On a properly spec'd Kynar-finished panel or a good asphalt system with coated fasteners, not meaningfully. We spec for the exposure so you don't lose years to something that could've been engineered around.
Yes, and we recommend it on the right home. The trick is a breathable synthetic underlayment so moisture that gets past the shakes can dry out. Skip the breathable layer and cedar in a coastal climate will fail from the deck up in ten years.
Every 2 to 3 years, tighter than an inland home. The exposure to coastal weather means small failures show up faster. We do free 15-minute drive-by inspections on any roof we installed. For coastal homes we bump the check-in to every second year.
50 years plus if the install is right and the homeowner leaves it alone. The finish is warranted 40 years. The panel itself is a much longer game than that. We've walked jobs from the mid-70s that still shed water perfectly, and the only reason we'd replace them is the colour palette went out of style.
Other options here
Same material, other cities
White Rock · Standing-seam metal
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