Protal ST Epoxy Mastic by Denso

Protal ST Epoxy Mastic by Denso
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Denso Protal ST Epoxy Mastic is a two-pack, high-solids, fast-drying epoxy coating for application directly onto wire brushed rusty steel substrates to SSPC-SP2/3. Its good penetration and adhesive properties ensure excellent protection in long-term exterior exposure.


Denso Protal ST Epoxy Mastic is used wherever steel grit blasting is not possible. Protal ST Epoxy Mastic can be used alone or in combination with other topcoats for long term exposure to water in applications such as: structural steel, pipe externals, pipe racks, tanks, offshore platforms, locks, gates, and bridges.


  • Minimal surface preparation (SSPC-SP2/3)
  • Long-term exterior protection
  • Excellent water/sea water resistance
  • Good resistance to acids and alkalis
  • Good flexibility, hardness and adhesion
  • Good impact resistance
  • Low VOC’s