An above-grade, wall expansion joint, 25V is a long-term, economical, high-performance seal for expansion and control joints in concrete, brick, stone, etc. where a black reveal or shadow-line effect is desired or where installed in concealed conditions.
25V is comprised of permanently-elastic, high-density, open-cell polyurethane foam, impregnated with a water-based, acrylic-stabilized, asphaltic emulsion.
Supplied precompressed to less than the nominal joint gap, after being released from its packaging, 25V expands to seal the joint gap under its own internal backpressure.