Mapei Flexible Waterproofing Mortar, Component A, 24Kg, Used for Balconies, Terraces, Bathrooms and Pools

MAPEI Mapelastic /A 24Kg is a fast-setting, highly flexible waterproofing mortar designed to form a waterproof seal between tile or stone and the substrate on floors and walls, especially in wet areas.

It is suitable for external surfaces and wet areas such as terraces, balconies, swimming pools, bathrooms, showers, and pool surrounds, providing a durable waterproof layer for tiled installations.

The product comes in a 24 kg bag, is polymer-modified cementitious, and offers high elasticity and strong adhesion to a variety of substrates, forming a reliable waterproof membrane when applied correctly.

Mapelastic /A is a cementitious, flexible waterproofing mortar known for its strong adhesion and two-coat waterproofing capability. Mapelastic AquaDefense is a different liquid-applied approach optimized for various substrates, while Mapegum WPS is a slurry waterproofing option with its own application method. For tile-heavy wet areas, Mapelastic /A is typically favored for its cementitious film and compatibility with pool-related products. See alternatives: Mapelastic AquaDefense 8kg: https://fepy.com/product/mapelastic-aquadefense-8kg and Mapegum WPS 6kg: https://fepy.com/product/mapegum-wps-6kg

Prepare the surface by removing dust, loose material, and contaminants. Ensure the substrate is sound, structurally stable, and damp but not soaking wet. Fill any cracks or defects and prime if required by the product guidelines.

Mix the powder with clean water gradually to achieve a smooth, lump-free paste. Use a mechanical mixer to ensure consistency. Apply with a trowel or roller to create a uniform membrane, using two coats for maximum effectiveness and allowing the first coat to set before applying the second.

Typically two coats are recommended. Apply the first coat and allow it to set to a tack-free film before applying the second coat. Waiting time depends on ambient conditions and substrate temperature; follow the product’s guidance for timing to achieve proper film formation.

Yes, Mapelastic /A is designed to provide a suitable substrate for tile installation. Use a compatible tile adhesive and grout recommended by MAPEI for wet area installations to ensure optimal bonding and performance.

Wear appropriate PPE such as gloves, eye protection, and a mask to avoid dust inhalation during mixing. Work in a well-ventilated area, handle wet mixes with care, and wash exposed skin after handling. Follow SDS guidance and keep out of reach of children.

Coverage varies with coat thickness and substrate porosity. Rough estimates typically range from a few square meters per coat per bag; plan for two coats per area and adjust based on the surface characteristics and the desired final film thickness.

Yes. It provides a durable, flexible waterproof membrane that integrates with pool-related products (such as primers, base coats, and grouts), helping reduce long-term moisture-related risks and potential repairs, which supports strong value for pool and wet-area installations.

Consider pairing Mapelastic /A with other MAPEI pool-system components like primers, base coats, and compatible grouts or tiles adhesives designed for wet environments. Using the full MAPEI system can optimize waterproofing performance and long-term durability.