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.
- Conforms to ASTM D 1056 2AI.
- Also available with a pressure-sensitive adhesive backing and/or tear-strip on request.