Open cell backer rod is unique; it can easily compress and return to its original state due to unrestricted air movement. This flexibility makes it easily conform to sealing applications and helps limit the depth of the sealant while also adding good sealant airing, which can reduce drying or set up time. FillPro Open Cell is a highly conformable “spool-less” backer rod available in bags.
  • Expansion and contraction joints
  • Window glazing
  • Curtain wall
  • Construction partitions
  • Precast assemblies and copings
  • Parking decks
  • Bridge construction

Open cell backer rods may not be ideal for sealants that are susceptible to bubbling of air escaping the backer rod material

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