Sika MonoTop®-108 WaterPlug AE is a high-performance rapid-setting waterproofing mortar formulated to provide immediate sealing of active water ingress in concrete and masonry substrates. Supplied as a ready-to-use powder in a 10 kg bag, it requires only the addition of clean water to achieve a fast-reacting, expanding repair mortar.

This product is ideal for emergency leak sealing, including water-bearing cracks, joints, honeycombs, and voids. It is widely used in basements, tunnels, foundations, lift pits, water tanks, manholes, culverts, and retaining walls where fast repair and minimal downtime are critical.

✅ Key Features

✔ Rapid-setting waterproofing mortar
✔ Stops active water leaks instantly
✔ Sets within minutes, even under running water
✔ Easy to mix – just add clean water
✔ Excellent adhesion to concrete and masonry
✔ Expanding action for tight sealing
✔ Suitable for internal and external use
✔ Ideal for emergency waterproofing repairs
✔ Durable and long-lasting performance
✔ Supplied in convenient 10 kg bag