J&K Foam Fabricating, Inc.
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Neoprene Sponge Expansion Joint


Standard Grade Neoprene Sponge

Neoprene Sponge expansion joint filler is primarily used for masonry expansion joints for brick and block. Neoprene meets and exceeds all ASTM D-1056 specifications for Closed Cell Sponge Neoprene expansion joints in residential, commercial, and industrial applications. Neoprene Sponge helps prevent clogging of expansion joints with mortar and is the accepted material for brick and block expansion joint fillers. Neoprene Sponge can be custom cut for your job site needs and is available with or without PSA (pressure sensitive adhesive).

       Notable Features:

  • A high-quality, closed cell Neoprene Sponge Rubber
  • Very flexible: Will not break or crack when used in masonry joints
  • PSA: Neoprene Sponge is available with or without Pressure Sensitive Adhesive (PSA)
  • Economical: Easily cut and handled on virtually any job site
  • Available in 50’ rolls or flat strips

Tech Data Sheet


DK Series Neoprene Sponge

DK Series Neoprene Sponge is a Neoprene/EPDM/Polymeric blend that will meet approximately 80% of all the specifications contractors, architects, and engineers require.

       Notable Features:

  • The DK Series Neoprene Sponge is the only full line of ASTM SCE 41 through SCE 45 that is listed to both UL94HF-1 and Canadian Fire Standard CAN/CAS C2.2 No. 017-92.
  • The DK Series Neoprene Sponge meets a multitude of ASTM, government, and automotive specifications.
  • The proprietary blend of Neoprene, EPDM, and other polymeric materials makes the DK Series Neoprene Sponge ideal for many applications.

Tech Data Sheet