Sika® Astar

One Component, Multi-Purpose Primer

Sika® Astar is a one part, multi-purpose, acrylic co-polymer based dispersion used to prime and seal concrete or mortar substrates prior to underlayment mortar application.
Suitable for use in hot and tropical climatic conditions.

  • Effectively seals concrete surfaces in a single, economic operation
  • Preventing water loss into the substrate and bubbles forming in the leveling material, reducing absorbency
  • Odourless
  • Improving adhesion on smooth and sound substrates
  • Useful for internal or external applications and wet areas
  • Low consumption / high coverage
  • Compatible to many substrates
  • Easy to apply
  • Coloured