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Care and maintenance · 4 min read

Maintaining Stainless Steel Cable & Posts

Why stainless 'tea stains' near the coast, and the 20-minute wash-down that keeps it bright.

StairSupplies Craftsmen4 min read

Stainless steel resists rust because of a chromium-oxide surface layer. Salt spray and airborne iron dust can overwhelm it, leaving brown 'tea staining' — cosmetic, but ugly.

The wash-down

  • Rinse with fresh water.

  • Wash with mild soap and a soft cloth — always with the grain.

  • Rinse again and towel dry.

  • Coastal installs: quarterly. Inland: once a year.

What to avoid

  • Steel wool or wire brushes (they embed carbon steel that rusts).

  • Chloride cleaners — including bleach.

  • Muriatic acid anywhere near stainless.