Metal Roofing
40-70 Year Performance, Zero Combustion Risk

The Roof That Belongs in the Oakland Hills

Metal roofing went from a niche product to a mainstream East Bay choice in about ten years, and the two things that drove it were wildfire and solar. After the Tubbs, Camp, and Glass fires, every hillside homeowner in Oakland, Berkeley, Orinda, and Lafayette started asking the same question: what's the roof that doesn't burn? And once people started planning solar arrays, the answer stopped being "tile" and started being "standing seam," because standing seam is the only roof you can mount panels to without drilling a single hole through the waterproofing.

I'll say something contractors of my generation don't always say out loud: I was skeptical of residential metal through most of the 1990s. I'd seen too many agricultural barns rattle in wind, too many exposed-fastener jobs leak at year 12 when the neoprene washers cooked out. The product has changed. The installation methods have changed. What we install today on an Oakland hills home is a different animal from what I grew up around.

What Is Metal Roofing

"Metal roofing" covers three genuinely different products. Standing seam is long continuous panels, usually 12 to 18 inches wide, with raised seams mechanically crimped together to hide every fastener. That's the premium residential option and what we install on most of our Oakland and Berkeley hills jobs. Metal shingles are individual pieces sized and shaped like composition shingles or shake, installed in courses — they look more traditional and fit HOA restrictions in some neighborhoods where standing seam reads as too modern. Stone-coated steel is a steel panel with a factory-applied chip coating that makes it look like tile or shake from the ground — Decra, Metro, and Westlake Royal Metro make the products we install here.

The substrate is usually 24 or 26-gauge galvalume steel, sometimes aluminum for coastal proximity or weight concerns, and the coating is Kynar 500 or Hylar 5000 PVDF finish on the premium panels. That Kynar coating is where the 40-year fade warranty comes from, and it holds up.

When Metal Makes Sense (and When It Doesn't)

Metal is the right call when fire is the controlling concern, when solar is in the plan, when the architecture is modern enough to carry a standing-seam profile, or when you're planning to own the home for 30-plus years and you want the lowest cost-per-year across that span. The Oakland hills, Berkeley hills, Orinda, Montclair, and the upper reaches of Lafayette and Moraga are metal-friendly markets almost by default now.

Here's my honest stance: metal isn't loud if it's installed with proper underlayment and solid decking — that myth is 30 years old and it came from agricultural barns where panels sat on purlins with nothing underneath. Put high-temp synthetic underlayment over structural sheathing and insulate the attic, and a standing seam roof is quieter in rain than an asphalt roof because the panels absorb vibration instead of slapping.

Where metal is the wrong call: a traditional Craftsman in the flats where the neighborhood is 100% composition shingle and an HOA won't allow standing seam — you'll fight a losing battle over aesthetics. A budget-controlled tract re-roof in Antioch or Brentwood — the math doesn't pencil out against architectural shingle unless you're staying 30-plus years. Any house with unresolved ventilation problems, because thermal movement in a metal roof will magnify ventilation shortfalls and create condensation under the panels.

Brands and Product Lines We Install

Decra Stone-Coated Steel — we install the Shake, Tile, Shingle XD, and Villa Tile profiles. Decra is the category leader for stone-coated steel. Fifty-year limited warranty, Class A fire rating as part of the assembly, and the chip coating handles UV and impact better than painted finishes.

Metro Roofs — the other major stone-coated steel brand, similar performance to Decra with slightly different profile options. We'll install Metro when the specific profile or color matches the project better.

Westlake Royal Metro — newer entry in the stone-coated space, competitive pricing, good color palette.

McElroy Metal — our standing seam go-to for steel panels. We typically spec the Maxima or Medallion-Lok system. McElroy runs a Bay Area fabrication capacity that cuts lead times.

ATAS International — premium standing seam, especially for aluminum panels where we're dealing with a coastal microclimate or an all-aluminum spec.

Englert — another standing seam manufacturer we work with, good field support and custom color matching.

The Installation Process

Standing seam is different enough from shingle installation that most roofers can't do it. Stone-coated steel is closer to a shingle install but still has its own details.

For standing seam, tear-off comes first, down to the deck. We inspect and replace sheathing, then roll high-temperature synthetic underlayment — not standard felt, because felt can stick to hot panels in summer and create thermal bridging. Peel-and-stick self-adhered membrane at eaves (CRC R905.1.2 ice shield requirement applies in some of the higher elevation East Bay parcels), valleys, and penetrations.

Panel layout starts at one rake and works across. Panels either snap-lock or get mechanically crimped with a seaming tool — mechanical seaming is stronger, and that's what we run on anything above a 6:12 pitch or exposed to significant wind uplift. Clip spacing is per manufacturer spec, usually 12 to 24 inches, with a fixed point at the ridge and floating clips toward the eave to let the panel expand and contract with temperature. Metal moves about an eighth of an inch per ten feet per 100°F — not a lot, but enough to buckle a panel if you pin it down on both ends.

Flashings are fabricated from matching metal, not generic aluminum. Dissimilar metals are isolated with separators to prevent galvanic corrosion — stainless fasteners never touch aluminum panels without a barrier. Ridge cap is vented where ventilation requires it, blind-closed where it doesn't. Grounding is a California-specific requirement on metal roofs with nearby electrical service, and we coordinate with the electrician on every project.

Stone-coated steel installs over battens with a modified shingle-style overlap. Faster install than standing seam, rougher tolerance on the substrate, and the chip coating hides minor imperfections that would telegraph through a painted standing seam panel.

Code Requirements in the East Bay

CRC R905.10 is the governing section for metal roof coverings. It covers slope minimums (most standing seam systems are rated down to 3:12 or 2:12 with seam sealant), fastener type, underlayment, and finish requirements.

Chapter 7A applies across all the VHFHSZ zones, and this is where metal is easiest of all the materials we install. A steel or aluminum panel is inherently non-combustible — it's already Class A without any granule coating or ember test. The assembly still needs compliant underlayment, ember-resistant vents, and proper edge closures, but the material side of the equation is handled.

R905.1.2 requires an ice shield at the eaves in specific climate and elevation scenarios. Most East Bay parcels don't trigger this, but some of the higher Oakland and Berkeley hill addresses do, and we'll spec it as a belt-and-suspenders measure regardless.

Title 24 cool roof credit is almost automatic with a reflective Kynar finish — we're routinely hitting 0.25 solar reflectance and 0.75 thermal emittance on cool-rated panels, which is where the Title 24 compliance path opens up.

Pricing and Timeline

Standing seam runs $1,400 to $2,400 per square installed, depending on gauge, panel width, and finish tier. Stone-coated steel runs $1,100 to $1,700 per square. For a typical East Bay hillside home, that's $40,000 to $110,000 all-in for a full re-roof.

Lifespan is 40 to 70 years depending on gauge, coating, and how well the original installation handled thermal movement. A 24-gauge galvalume standing seam with Kynar finish, properly installed, is a 50-to-60-year roof without major intervention. Aluminum runs longer in coastal conditions.

Timeline: three days to two weeks depending on panel complexity and roof geometry. A simple 25-square gable in Montclair with long continuous panels might take four days total. A complex hip-and-valley roof with multiple penetrations and custom ridge work can stretch past two weeks.

East Bay Cities Where Metal Works Best

Oakland hills, Berkeley hills, Montclair, Piedmont — wildfire exposure, modern architecture, solar planning, high-value homes where the lifespan math pencils out.

Orinda, Lafayette, Moraga — VHFHSZ territory, mid-century modern stock, Chapter 7A compliance built in.

Walnut Creek hills — same reasoning, different microclimate.

Alamo and Danville — standing seam works on contemporary custom homes; stone-coated steel works everywhere tile would otherwise be the spec and the framing can't carry the tile load.

Modern and contemporary homes anywhere in the East Bay — if the architecture supports it, metal looks right and performs right.

Frequently Asked Questions

Ready to Talk Specifics

If metal is on your shortlist — whether it's wildfire concerns, solar plans, or just wanting a roof you don't have to think about for the next four decades — we'd rather come look at the house than quote blind. We'll measure, check the deck, confirm your Chapter 7A status, and write you a real line-item estimate.

Call East Bay Roofers at (925) 722-4916, or request an estimate online. Founded 1988 in Concord, C-39 licensed (CA #987654), GAF Master Elite and CertainTeed SELECT ShingleMaster certified, 4.9 out of 5 across 527 reviews. We've been installing standing seam and stone-coated steel across Oakland, Berkeley, Orinda, Lafayette, and Montclair since long before metal was the trendy answer.