Waterproof Tiles

Which Chemicals are Used to Waterproof Tiles?

Waterproofing tiles is a crucial step in construction and renovation projects, especially for moisture-prone areas. Several chemicals and products are used to waterproof tiles, typically to ensure the longevity and durability of surfaces.

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Cement-Based Waterproofing Compounds

Acrylic-Based Waterproofing Compounds

Acrylic waterproofing compounds are developed with the mixture of acrylic resins and cement. These materials bond well with concrete and tile surfaces to help create a strong waterproof barrier. They are used in bathrooms, kitchens, and other areas.

Latex-Based Waterproofing Compounds

Latex-based compounds consist of latex polymers mixed with cement. They are known for their flexibility and excellent adhesion to tile surfaces. These compounds can be brushed or rolled onto the substrate to form a strong layer.

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Polyurethane Waterproofing Coatings

Polyurethane coatings are an excellent choice for waterproofing tiles, especially on terraces, balconies, and flat roofs. These coatings are resistant to water and UV. Polyurethane coatings are marketed in two types: aromatic and aliphatic. Aromatic polyurethanes are less UV-resistant and may lose color over time. Aliphatic polyurethanes, on the other hand, maintain their color and UV resistance.

Silicone Sealants

Silicone sealants can waterproof joints and seams in tile installations. These pastes are applied in tile-to-tile or tile-to-wall connections. Silicone sealants can accommodate some movement without compromising the seal.

Epoxy Grouts

Epoxy grouts are a versatile solution for waterproofing tiles, especially in areas with heavy water exposure. Made from a mix of epoxy resins and hardeners, epoxy grouts provide a strong resistance to chemicals and staining.

Bituminous Coatings

Bituminous coatings are made from bitumen, a petroleum-based material. These layers are used in underground and foundation applications. While less common for tiles, they can be used for waterproofing when a thicker or a heavy-duty solution is required. Bituminous coatings come in two main forms: solvent-based and water-based.

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Ceramic Tile Sealers

Ceramic tile sealers are applied to the tile surface. These chemicals create a protective layer that repels water and stains. Ceramic sealers are used in bathrooms, kitchens, and outdoor tiles. They are available in water-based and solvent-based formulations.

Waterproof Membranes

Waterproof membranes are used as an underlayment. These membranes come in various forms, such as sheet, liquid, and fabric-reinforced. The layers provide a watertight barrier to prevent moisture penetration.


Nano-coatings are used for waterproofing tiles. These coatings utilize nanoparticles to create an invisible protective layer on the tile surface. They are water-repellent and easy to clean. Nano-coatings are used on exterior tiles and high-traffic areas.

Crystalline Waterproofing Agents

Crystalline waterproofing agents penetrate the tile and substrate to create insoluble crystals that block water ingress. They are used in combination with cement-based waterproofing compounds; they are effective in preventing water damage to tiles and concrete surfaces.

Polymer-Modified Mortars

Polymer-modified mortars are used for attaching tiles to substrates. They enhance the mortar’s bond and makes it more water-resistant. While it is not a standalone waterproofing solution, polymer mortars play a crucial role in restricting moisture ingress through gaps or spaces between tiles.


There are various chemicals and products for waterproofing tiles, each with its specific applications and advantages. The choice for the most suitable waterproofing solution depends on the type of tiles, the environment, and the level of waterproofing needed. It is essential to consult with a professional or follow the manufacturer’s guidelines to determine the most appropriate chemical or product for your needs.

If you want to know more about tiles and waterproofing, contact Lakhwa Chemical Services, the best company in Karachi, Pakistan.

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