Reservoirs, Water Tanks & Channels Waterproofing

Certified liquid-applied waterproofing for potable and process water containment.

A polyurethane liquid membrane engineered for water tanks, channels, and artificial ponds under constant hydrostatic pressure. Certified for use in drinking water tanks, the system protects simple to highly complex containment structures with a seamless, crack-bridging membrane that remains permanently flexible. High solar reflectivity contributes to thermal insulation of the contained water.

  • Forms seamless membrane without joints
  • Certified for use in drinking (potable) water tanks
  • Resistant to water, heat, and frost
  • Resistant to root penetration
  • Crack-bridging
  • Water vapour permeable
  • Provides high sun reflectivity, contributing to thermal insulation
  • Remains flexible from −40 °C to +90 °C
  • Cold application — no open flames required
  • Potable water tanks and reservoirs
  • Irrigation channels and water storage ponds
  • Artificial ponds — ornamental and industrial
  • Process water containment structures

Download the full product catalogue, or request the TDS and SDS for project specification and approval.

Coverage1.2–1.8 kg/m² per coat (2–3 coats standard)
Potable water certificationYes — certified for drinking water contact
Temperature range in service−40 °C to +90 °C
Elongation at break>400% (EN ISO 527)
Application methodRoller or brush
Open flame requiredNo — cold-applied system

Indicative values only. Refer to the full Technical Data Sheet for certified specifications. Contact Numastec to request the TDS for this product.

Get a quote or request technical documentation.

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