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1/2" Closed Cell Backer Rod Sold/Per Foot

Mfg#: 530BR12
Product#: 530BR12
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HBR® is a closed-cell polyethylene foam backer rod used in concrete construction. HBR acts as a barrier, limits the depth of cold-applied sealant required and prevents excessive sealant use.


  • Lightweight
  • Recyclable
  • Non-exuding
  • Use with cold-applied sealants
  • Denver foam backer rod
  • Clean product
  • Easy to use
  • Material is odorless and will not stain
  • Backing for elastomeric and other applied caulking sealants
  • Water resistant
  • For use in expansion or construction joints in concrete and precast concrete walls, floors
  • Denver foam is chemically inert and will resist oil, gasoline and most solvents
  • Inert
  • Both hot and cold installations can be installed with Denver foam backer rod


  • Material: Polyethylene Foam
  • Density: < 1.50 lb/cu-ft
  • Standards: ASTM Specified
  • Rod Diameter: .5 in
  • Color: Gray
  • Tensile Strength: 29 psi
  • Water Absorption: < 0.030 g/cc
  • Temperature Rating: -45 TO 160 deg F
  • Joint Width: .375 in
  • Type: Closed Cell, Round
  • Usage: For Expansion and Contraction Joints, Curtain Walls, Construction Partitions, Parking Decks and Bridge Construction