Washington State Ferry

VersaFlex Polyurea Coating Steel Piles

The Washington State Department of Transportation replaced several of its pier clusters during an upgrade at a ferry terminal on Puget Sound. Rather than deal with the accumulation of barnacles and sea vegetation that historically accumulated on wooden and steel pilings, the DOT opted to use steel pilings coated with polyurea for optimum corrosion resistance. This allowed quick cleaning of the piles and also protected the pilings from rust and other deterioration, such as scour.

Once the pilings were shot blasted, primed and then allowed to dry, versa micro VersaFlex FSS 50 DM was applied at 25 to 30 mils. The pilings were left in storage for a couple of weeks and then loaded and floated to the erection area and placed.

This application was a test to compare our coating with epoxy coatings. We performed exceptionally well in all areas, in fact, only scuffing occurred when placed. No damage to the coating whatsoever. At last inspection (2003) there were no signs of deterioration and barnacles do remove easier with the polyurea vs. the epoxy.

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Case Study Summary Info

  • Project: Steel Piles Anti-Corrosion Coating
  • Coating System: VersaFlex FSS 50 DM
  • Substrate: Steel
  • Prep Type: Shot blast
  • Coating Thickness: 20-30 mils
  • Extreme high/Low Temp: 60°/40° F
  • Exposure: Full immersion salt water