Under-Tile Membrane Systems

A sort of waterproofing system that is installed beneath tiles to safeguard the subfloor and stop moisture damage is referred to as an under-tile membrane system.

Types of Under Tile Membranes

  • Under tile membranes known as “sheet membranes” are constructed from sheets of rubber or polyethylene. Sheet membranes often offer a high level of waterproofing and are simple to install.
  • Under-tile membranes that are applied as a liquid are known as liquid-applied membranes. Since they are more flexible than sheet membranes, liquid-applied membranes can span tiny subfloor gaps.
  • Combination membranes: An under-tile membrane type that combines the advantages of sheet and liquid-applied membranes. The best amount of waterproofing is provided by combination membranes, which are often more expensive than sheet or liquid-applied membranes.

Advantages of Under Tile Membrane Systems

  • Waterproofing: Under-tile membrane systems may be able to stop moisture from harming the tiles and subfloor. This is crucial in regions that frequently experience flooding or excessive humidity.
  • Resilience: Undertile membrane systems are made to be resilient and long-lasting. By doing this, you can avoid paying for costly repairs and replacements.
  • Resistance to mold and mildew: Under-tile membrane systems can aid in preventing the development of mold and mildew, which can lead to health issues.
  • Economical: By reducing moisture damage and mold growth, under-tile membrane systems can help you save money in the long term.

Testing Under Tile System After Installation

Prior to tiling, a proactive leak test should be carried out. Applying water to the membrane and looking for leaks will accomplish this.
Every few years, routine inspections should be made to make sure the membrane is still in good shape.


Systems with under-tile membranes provide several advantages, including waterproofing, sturdiness, and mold and mildew resistance. They could be a good investment if you want to prevent damp damage to your house.


Under tile membrane systems’ definition, varieties, benefits, methods of installation, and testing have all been covered in this blog post. You can decide whether or not an under-tile membrane system is appropriate for your property by being aware of these variables.

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