Mapei Mapelastic Foundation - Waterproof Coating for Foundations and Retaining Walls

Flexible Two-Component Waterproof Coating for Foundations and Retaining Walls. Mapei Mapelastic Foundation is a two-component, flexible cementitious mortar formulated for waterproofing concrete surfaces exposed to ground moisture and water. Designed for foundation walls, retaining structures, lift pits, and concrete basements, it forms a continuous waterproof membrane that bridges cracks and resists water pressure from the positive side. Ideal for both new construction and refurbishment, it offers reliable long-term protection against moisture ingress in below-ground environments.. Key Features & Benefits. Waterproof Protection: Effectively resists positive water pressure in below-ground applications.. Flexible & Crack-Bridging: Bridges static cracks up to 0.8 mm, reducing the risk of water ingress through fissures.. Excellent Adhesion: Bonds securely to concrete, render, masonry, and cementitious screeds.. Pre-Tiling Coating: Suitable under ceramic, porcelain, or natural stone finishes when applied internally.. Easy Application: Can be applied by brush, trowel, or spray machine in two coats.. Product Details. Type: Two-component cementitious waterproofing mortar. Components: Part A (powder) + Part B (liquid polymer). Colour: Grey. Application Thickness: Approx. 2 mm (in two coats). Coverage: Approx. 2.0–2.2 kg/m² for two-coat application. Packaging: 32kg kits (24kg powder + 8kg liquid). Crack-Bridging: Up to 0.8 mm (static cracks). SKU: MAPFOUND32. Application Instructions. Substrate Prep: Ensure surfaces are clean, sound, and saturated surface-dry (SSD).. Mixing: Pour Part B into a clean container and slowly add Part A while mixing to achieve a smooth, lump-free consistency.. Apply First Coat: Apply with brush, trowel, or spray to the prepared surface.. Apply Second Coat: After the first coat begins to set (approx. 4–5 hours), apply the second coat perpendicular to the first.. Protection: Protect from rain and drying wind during curing. Cover externally with protection board or backfill only after full curing.. Limitations. Do not use on substrates subject to dynamic cracking or severe movement.. Not designed for use under continuous negative pressure or without protective finishes.. Do not apply in temperatures below +5°C or above +35°C.. Health & Safety. Contains cement – may cause skin irritation. Always wear gloves, eye protection, and respiratory protection during use. Refer to the Safety Data Sheet (SDS) for full safety instructions.