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BOSTIK Ultraseal

One coat vapour barrier

Bostik Ultraseal is a two part, solvent free, epoxy composition compatible with a wide range of coverings. Designed as a one coat primer and vapour barrier/retarder to prevent moisture migration through a concrete slab to levels that will not cause swelling or cupping of timber flooring.

Where to Use

  • Interior surfaces
  • Residential applications
  • Commercial applications


  • Floors
  • Compatible with the entire Bostik Ultraset® hardwood flooring adhesive range


  • Concrete
  • Fibre cement
  • Stone
  • Masonry
  • Structural plywood,
  • Brick
  • AAC


Ultraseal TDS

Ultraseal SDS

Ultraseal VOC