Bostik ASA® Dampfix® Gold

One part, highly elastic, Class 3, water-based polyurethane waterproofing membrane system

Water Based Polyurethane Liquid Waterproofing Membrane

ASA® Dampfix® Gold is a one part, highly elastic, Class 3, water-based polyurethane, BRANZ appraised waterproofing membrane system. It is specifically formulated for application on graded substrates that provide positive falls to drainage outlets. This is a 2-coat system applied over primed porous & non-porous substrates.
Recommended Uses

  • Interior surfaces
  • External surfaces
  • Residential applications
  • Commercial applications


  • As a waterproofing membrane under tile to internal wet area shower, bathroom, kitchen, laundry and toilet areas
  • As a waterproofing membrane under tile or other wearing surface systems to external balconies, rooftops and podium levels


  • Concrete 
  • Cement
  • Rendered masonry 
  • Cement sheet (FC sheet)
  • Water resistant plasterboard
  • Structural plywood
  • Class 3, high elasticity
  • Fast drying
  • Recoat in 2 hours
  • Tile next day in most conditions
  • May be tiled directly using approved Bostik ASA® tile adhesives
  • Reinforced with clump free fibres.
  • No mixing
  • High resistance to detergents and bleach
  • Will not re-emulsify after curing
  • Does not embrittle with age
  • Can be applied to damp substrates, i.e. no free water 

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