NS Neoprene Sponge

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Blok-Lok Neoprene Sponge is a closed-cell, non-absorbent horizontal and vertical joint filler used in a variety of masonry applications.

  • Neoprene allows expansion and prevents clogging of joints with mortar.
  • Neoprene is used to reduce restraint and permit movement.
  • Neoprene is placed where cracking is likely to occur due to excessive tensile stress.
  • Rolls: 1/8”, 1/4”, 3/8” or 1/2” thick x 50’ long rolls
  • Conforms to ASTM D 1056 2AI.
  • Also available with a pressure-sensitive adhesive backing and/or tear-strip on request.

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