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Wet Room Tanking & Construction Systems

Tanking systems create a fully waterproof wet room structure.

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Wet room tanking systems form the primary waterproof barrier within a shower or wet room installation, protecting the building structure from water ingress.

These systems typically include:

  • Waterproof membranes (liquid or sheet)
  • Jointing tapes and corner pieces
  • Sealants and bonding agents

When correctly installed, tanking creates a continuous sealed layer beneath the floor and wall finishes, ensuring that any water passing through surface layers is contained and directed safely to the drainage system.

Tanking is essential in:

  • Wet rooms with floor formers
  • Screed floor constructions
  • Tiled or micro cement finishes

Inaccessible or poorly installed waterproofing is one of the most common causes of failure in wet rooms. For this reason, correct specification and installation are critical, particularly in multi-storey buildings and care environments.

From a compliance perspective, tanking supports long-term performance and aligns with best practice guidance for wet room construction.

  • What is tanking in a wet room?
  • Do all wet rooms require tanking systems?
  • What happens if a wet room is not tanked properly?
  • Can tanking be applied over existing surfaces?
  • What is the difference between liquid and sheet tanking systems?

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