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Closed Cell Foam Backing Rod

Code: 40-BRCC-WP
U.O.M. - Roll

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Closed cell foam backing rod is a compressible, closed cell polyethylene foam tube with an outer skin. It is used as a backing for cold applied sealants in expansion/construction joints and building seal applications. Choose your size from the options below.


Foam gap filler backing rod is a flexible closed cell foam extrusion, ideal for commercial applications such as precast and formwork joints. Backing rod or caulking strips are ideal for supporting and filling gaps or cracks with caulks and sealants. Backer rod is easy to use and fills gaps up to 50 mm wide.

Foam backing rod is an exceptionally strong and lightweight, and can be used as a foam rod expansion joint and space filler between vertical and horizontal joints, in masonry, brickwork, concrete panels, curtain walls and more. It is ideal for any building sealing and dust proofing applications, such as around skylights, windows, electrical boxes and air conditioning units. It ensures a tight seal to prevent dirt and water entry into the structure and it is compatible with most common building sealants, silicones, gap fillers and foams.


  • Foam backing rod expansion joint
  • Use with most sealants and silicones
  • Polyethylene construction
  • Easy to cut and use
  • Closed cell foam
  • Supplied in range of roll sizes and widths
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