A common mistake is to assume that tiles and grout form an impermeable layer. In reality, ceramics can be subject to micro-infiltration that, over time, compromises the underlying structure. For this reason, it is essential to create a continuous and elastic waterproofing barrier before applying the tile.

To ensure optimal effectiveness, an under-tile waterproofing system should:

• Adhere perfectly to existing concrete, plaster, masonry and tiles
• Maintain elasticity even in the presence of micro-cracks and deformation of the substrate
• Resist freeze-thaw cycles, UV light, and chemicals such as deicing salts and chlorides
• Be applicable on both horizontal and vertical surfaces
• Allow tiles to be laid directly with cementitious adhesives
• Be vapor permeable but impermeable to water

‍

A practical example of this technology is DRYLASTIC, a two-component liquid membrane composed of cementitious binders and synthetic polymers in water dispersion. Once cured, its layer always remains elastic, even at low temperatures, and offers protection against carbonation and resistance to chemicals.

DRYLASTIC is perfect for waterproofing balconies, terraces, bathrooms, showers and swimming pools. It can also be used on uneven or already tiled surfaces after applying a primer.

In addition, it is approved for use with potable water, without solvents or VOCs, ensuring safety even in enclosed or poorly ventilated spaces.