Maintenance Guides / Exterior & Structure

Inspect Coastal Fasteners and Anchors for Corrosion

Difficulty: moderateTime: 45 minsEst. Cost: $50 - $300

Why it matters

Salt spray corrodes steel fasteners 3x faster than inland; a failed roof strap or railing can fail catastrophically during a storm, causing injury or death.

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How to do it

  • 1

    Visually inspect all exposed fasteners and brackets on roof, deck, railings, and exterior mounted equipment.

  • 2

    Look for orange/brown rust staining, pitting, or green oxidation on bolts and plates.

  • 3

    Use a wire brush or steel wool to remove light surface rust; apply a rust-preventative spray.

  • 4

    For heavily corroded fasteners (deep pitting, loose bolts), mark with bright tape and plan replacement.

  • 5

    Replace corroded fasteners with stainless-steel grade-8 bolts, washers, and lock-washers.

  • 6

    Document replacements with photos and date for warranty and insurance claims.