Detail Product

Bostik Ultraseal - One coat vapour barrier

: Timber Flooring Primer


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.

Key Features

  • Accepts a wide range of coverings
  • Excellent bond to a range of substrates
  • Excellent high build achieved in one coat

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

To ensure that tiles are installed correctly, please consider using a tiling professional. All Natural Stone and Encaustic tiles should be sealed immediately after install.


To ensure long lasting, beautiful tapware, please do not use any chemical based or harsh cleaners. Also avoid any rough surface materials such as scourers, only use a soft cloth with warm soapy water.


We deliver Australia Wide baby! To estimate delivery time to your beautiful home, see our Shipping info here.


To ensure that our product is perfect for you, before purchasing please consider reading our Refunds and Returns Policy here.