MAPEI LAMPOSILEX is a rapid-setting hydraulic binder designed to instantly stop water leaks, even under pressure. Perfect for sealing cracks, joints, and holes in concrete and masonry, it sets in just 2 minutes at +20°C. Ideal for emergency waterproofing in basements, tanks, tunnels, and retaining walls. Offers high adhesion, no shrinkage, and excellent durability. Applied with water and a trowel — no special equipment needed.