Mapei Mapelastic - Cementitious Waterproofing Membrane for Concrete

Flexible Two-Component Cementitious Waterproofing Membrane for Concrete Structures

Mapei Mapelastic is a high-performance, two-component cementitious membrane designed for waterproofing concrete and masonry surfaces. Ideal for use on swimming pools, balconies, terraces, façades, and foundations, it forms a continuous, flexible, and crack-bridging coating that resists positive water pressure and weathering. Reinforced with Mapenet 150 for critical areas, Mapelastic provides durable protection in both new build and refurbishment projects.

Key Features & Benefits

• Flexible & Crack-Bridging: Resists static cracks up to 2mm, maintaining waterproofing integrity.
• Positive Water Pressure Resistance: Withstands water ingress on surfaces in contact with moisture.
• Ideal for External Use: Protects balconies, terraces, retaining walls, and swimming pools.
• Reinforce with Mesh: Use Mapenet 150 for improved mechanical performance and durability.
• Tile-Ready Surface: Can be overlaid with ceramic or natural stone tiles using Mapei adhesives.

Product Details

• Type: Two-component flexible cementitious waterproofing membrane
• Components: Part A – grey powder, Part B – white liquid latex
• Colour: Grey when mixed
• Application Thickness: Minimum 2mm (applied in two coats)
• Coverage: Approx. 2.0 kg/m² for a 2mm coat (without reinforcement)
• Packaging: 32kg kit (24kg Part A + 8kg Part B)
• SKU: MAPELASTIC32

Application Instructions

1. Surface Preparation: Ensure substrates are clean, sound, and saturated surface-dry (SSD).
2. Mixing: Pour Part B into a clean container and gradually add Part A while mixing until smooth and lump-free.
3. First Coat: Apply with a brush or trowel and embed Mapenet 150 mesh if reinforcement is required.
4. Second Coat: Apply after 4–5 hours, perpendicular to the first. Allow to cure before tiling or exposure.

Limitations

• Do not apply in temperatures below +5°C or during rainy, frosty, or excessively windy conditions.
• Not suitable for negative-side waterproofing or continuous water pressure without appropriate protection.

Health & Safety

Contains cement – may cause irritation. Avoid skin and eye contact. Wear gloves, goggles, and suitable PPE. Refer to the Safety Data Sheet (SDS) for full health and safety guidance.