Corrosion 101
Why steel fails in waterparks and coastal environments — and how cathodic protection and coatings stop it.
Understanding the corrosion cell
Steel doesn’t rust randomly. It rusts because four things are present at once — and pool decks, splash pads, and coastal facilities give it all four in abundance.
Why waterparks corrode faster
A corrosion cell needs an anode (where metal is lost), a cathode (where it’s protected), an electrolyte to carry ions between them, and a metallic path to carry electrons back. Chlorinated water is an efficient electrolyte, and constant wet-dry cycling in the sun breaks down coatings that would otherwise keep that electrolyte off the steel — so the cell runs harder, longer, every season.
Cathodic protection does the losing for you
Zinc-rich primers and field-applied galvanized coatings work by being more anodic than the steel underneath. The zinc becomes the sacrificial anode and corrodes first, so the structural steel stays cathodic — protected — for as long as the zinc lasts.
Surface coatings close the circuit off entirely
Epoxies and urethanes applied over that zinc layer act as a barrier, keeping the electrolyte from reaching bare metal in the first place. Prep, cathodic protection, and topcoat aren’t three separate jobs — they’re one system, which is why we handle the full scope instead of just one step of it.
What untreated corrosion can eventually look like
Left unchecked, the corrosion cell can break steel down faster than you think.
Freedom Steel Restoration provides onsite inspections and assessments for slide towers, play structures, and steel structures of any kind. Please reach out to schedule yours.
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Work schedules fill up quickly — save our contact details so it’s easy to reach out when you’re ready. We specialize in steel waterslide structures and splashpads, and we look forward to serving you.