A common mistake is to believe that tiles and grouting constitute a waterproof layer. In reality, ceramics can be subject to micro-infiltrations which, over time, compromise the underlying structure. For this reason, it is essential to create a continuous and elastic waterproofing barrier before applying the coating.

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

• Adhere perfectly to concrete, plaster, masonry and existing tiles
• Maintain elasticity even in the presence of micro-cracks and deformations of the substrate
• Resist freeze-thaw cycles, UV rays and chemical substances such as de-icing salts and chlorides
• Be applicable on both horizontal and vertical surfaces
• Allow direct laying of tiles with cementitious adhesives
• Be vapor permeable but waterproof

‍

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

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

In addition, it is approved for use with drinking water, without solvents or VOCs, guaranteeing safety even in closed or poorly ventilated spaces.