Metal Roofing
40-70 Year Performance, Zero Combustion Risk

The Roof That Outlasts Everything Else

Metal roofing is the fastest-growing segment in residential roofing, and the East Bay is leading the trend. The combination of fire resistance (critical in our WUI zones), energy efficiency (40% less cooling load), and 40-70 year lifespan makes metal the rational choice for homeowners who plan to stay. The upfront premium is real — but so is the payback.

Metal Roofing Systems

Standing Seam — The premium metal roofing system. Panels with raised seams that interlock and conceal all fasteners. No exposed screws means no penetration points for water and no screw-related maintenance. Panels are typically 12-18 inches wide and run continuously from eave to ridge. Available in 24-gauge and 26-gauge steel or 0.032" and 0.040" aluminum.

Corrugated Panels — Exposed-fastener panels with a repeating wave or rib pattern. Lower cost, faster installation, and a distinct look that works for agricultural, industrial, modern, and rustic architectural styles. Fasteners with neoprene washers need inspection every 15-20 years — the one maintenance item specific to this system.

Metal Shingles — Individual shingle-shaped metal pieces that mimic the look of slate, shake, or tile. Installed in overlapping courses like traditional shingles but with the performance benefits of metal. Ideal when you want metal's longevity but prefer a traditional roofing aesthetic. Four-way interlocking design resists 120+ mph winds.

Copper — The pinnacle of metal roofing. Develops a distinctive green patina over 10-20 years. Naturally antimicrobial — no moss or algae growth. Lifespan: 100+ years with zero maintenance. Extremely expensive ($25-$40/sq ft installed) but unmatched in longevity and beauty. Reserved for high-end residential and historic buildings.

Metal Roofing and East Bay Fire Zones

Over 60% of the East Bay hills are designated Wildland-Urban Interface (WUI) zones, requiring Class A fire-rated roofing materials. Metal exceeds this requirement — it's non-combustible at any temperature. During wildfire events, ember showers can travel miles ahead of the fire front. Embers landing on a metal roof slide off or burn out harmlessly. On an asphalt shingle roof, they lodge in the granules and ignite.

Cities like Oakland, Berkeley, Orinda, and Lafayette have adopted increasingly strict fire-hardening requirements since the 1991 Oakland hills firestorm. Metal roofing meets or exceeds every current and proposed fire code. Investing in metal for a hillside home isn't just smart — in many neighborhoods, it's becoming necessary.

Installation Details That Matter

Underlayment — High-temperature synthetic underlayment rated for metal (not standard roofing felt, which can stick to hot metal panels). Self-adhering membrane at eaves, valleys, and penetrations.

Thermal Movement — Metal expands and contracts 1/8" per 10 feet with a 100°F temperature swing. Standing seam clips allow panels to float over the deck. Fixed-point fasteners at the ridge with floating clips toward the eave accommodate movement without oil-canning.

Flashing — All metal roofing flashing is fabricated from matching metal, not generic aluminum. Color-matched trim, drip edge, ridge cap, and wall flashing provide a clean, finished appearance. Dissimilar metals are isolated with separators to prevent galvanic corrosion.

Ventilation — Vented ridge caps and soffit intake provide continuous airflow. Metal roofs with proper ventilation and reflective coatings can reduce attic temperatures by 40°F+ compared to dark shingle roofs — measurable savings on air conditioning costs.