PolySpec® 100EX is a 100% solids, moisture tolerant, penetrating epoxy primer used to prime concrete surfaces for high-performance applications. It is commonly utilized as part of a complete TuffRez flooring system and is also suited for use with epoxy novolac lining systems.

Recommended Uses

  • Concrete primer, as part of a complete TuffRez® flooring system
  • Concrete primer, as part of a complete epoxy novolac lining system
  • Enclosed and occupied spaces


  • High solids formulation eliminates solvent odors
  • Low viscosity formulation penetrates and seals concrete pores
  • Provides superior adhesion to concrete and higher tensile and flexural strengths when compared to conventional polyamide primers
  • Cures at ambient temperatures down to 50ºF
  • Resistant to amine blush, even when cured at low temperatures and high humidity
  • Requires zero induction time