Flexible Epoxy Curing Agent DH-3239 Hardener DH-3239 contributes toughness and flexibility to epoxy flooring, helping systems absorb movement and resist crack propagation. The modified amine structure balances hardness with elasticity, so floors withstand thermal cycling and substrate movement better than brittle systems. It is a practical choice for renovation work over existing concrete. Product Specifications Property Unit Value Model - DH-3239 Color - Gardner color; ≤2