Hydrostop 20L


A water based 2-component epoxy.

  • Primer for Acrylic, Latex & Polyurethane membranes.
  • Can be applied to damp concrete.
  • Moisture barrier for floors, walls and screeds.
  • Negative seal tanking.
  • Ponds.
  • Dust sealing concrete floors.
  • Basements and tunnels.
  • Underground car parks.
  • Lift wells.


Tamsi HYDROSTOP is a high quality two component grey coloured water based epoxy coating/moisture barrier. This durable waterproof membrane for the bathroom and other areas chemically cures to form a tough barrier with excellent adhesion to concrete and masonry surfaces.

  • Water based.
  • Low odour.
  • Environmentally friendly.
  • Can be applied to damp concrete.
  • Excellent water resistance.
  • Excellent adhesion to concrete.
  • Resists grease, oils, petrol and most mild detergents.
  • Prevents rising damp and continual seepage.
  • Resists hydro-static pressure when cured.
  • Prevents bubbling in membranes.
  • Suitable for indoor and outdoor applications.
  • Low toxicity.
  • 1L covers 3m2.