Moisture-curing PU sealant for concrete pavement, bridge deck and precast panel joints, applied straight from the cartridge.
A ready-to-use polyurethane sealant that cures by reaction with atmospheric moisture. It offers high elasticity with excellent adhesion to concrete and steel, and is the standard choice for sealing bridge deck joints, pavement contraction joints and precast cladding gaps.
Isocyanate groups react with ambient humidity to form a flexible polyurethane elastomer. Because cure starts at the exposed surface and progresses inward, joint depth must be controlled with a backer rod; the cured bead then accommodates cyclic movement without adhesive failure.