Sika® backing filler®

Sealant Backing Material and Joint Filler

Sika Backing Filler® material is extruded polyethylene closed-cell foam available in boards, and strips.

  • Easy to Apply.
  • Closed Cell.
  • No bond to most sealants.
  • Compatible with cold applied sealants.
  • Different thicknesses and widths available.
  • Highly flexible & compressible.
  • Good water resistance.
  • Good temperature resistance.