Standing-Seam Metal Roofing Built for Fog, Salt Air, and Coastal Wind
A standard residential metal panel wasn't specified for a marine environment. We use coated, corrosion-resistant systems built to handle San Francisco's near-constant humidity and salt air off the Bay.
Why Metal Roofing Works — and What to Watch — in San Francisco
Standing seam metal is a strong long-term investment here, with a few coastal-specific considerations:
- Salt-air corrosion resistance — coated panels and stainless or coated fasteners specified for coastal exposure, not a generic inland spec.
- Long service life — 40 to 70 years when correctly installed, well beyond asphalt shingle.
- Fewer moss and moisture issues — a smooth metal surface holds onto less standing moisture than textured shingle, a real advantage under near-daily fog.
- Fits additions and rear sections well — a common choice where matching a historic street-facing shingle profile isn't required.
Cost & Specs
Standing seam metal typically installs for $10–$18 per square foot depending on panel gauge, finish, and roof complexity — more upfront than asphalt shingle, but with two to three times the expected lifespan.
Compare Roofing MaterialsRelated Services
Shingle Roofing
The more common choice for historic street-facing rooflines.
Learn more about Shingle RoofingCommercial Roofing
Metal is also used on some low-rise commercial properties.
Learn more about Commercial RoofingMetal Roofing Questions
Does standing seam metal hold up to San Francisco's salt air?
Yes, if it's specified correctly. We use coated steel or aluminum panels with corrosion-resistant fasteners rated for coastal exposure — a standard residential panel without that spec can corrode faster here than it would inland.
Is metal roofing a good fit for a Victorian or Edwardian home?
It can be, particularly on additions or rear sections where matching historic shingle profiles isn't a priority. On a street-facing historic facade, most homeowners stick with a shingle profile that preserves the original look — we'll give you an honest read on which makes sense for your home.
Does metal roofing help with Title 24 compliance?
Reflective metal roofing can help meet cool-roof reflectance requirements on flat or low-slope sections, and some coated products qualify for steep-slope credit as well. We'll confirm product specs against Title 24 during your estimate.
How long does standing seam metal roofing last?
Well-installed standing seam metal typically lasts 40 to 70 years, significantly longer than asphalt shingle, which makes the higher upfront cost a longer-term value play for homeowners planning to stay put.
Considering Metal Roofing?
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