SikaTop 550 is a high-performance, two-component cementitious waterproofing and protective coating system developed for durable and long-term moisture protection. It consists of a cement-based powder (Component A) and a polymer-modified liquid (Component B), which when mixed together produce a smooth, flexible slurry that can be easily applied to a variety of construction surfaces. The resulting coating forms a strong, continuous, and water-resistant barrier that effectively prevents water ingress and protects structural elements from dampness and deterioration. Designed for both internal and external use, SikaTop 550 offers excellent adhesion to concrete, mortar, and masonry substrates. Its flexible properties allow it to accommodate minor cracks and surface movements, making it highly suitable for areas exposed to changing temperatures and moisture conditions. It is widely used in residential, commercial, and infrastructure projects where reliable waterproofing is essential. Two-component system (cementitious powder + polymer liquid) for strength and flexibility Forms a seamless and durable waterproof coating Excellent adhesion to concrete, plaster, mortar, and masonry surfaces Flexible properties help bridge hairline cracks and minor movements Suitable for both interior and exterior waterproofing applications Ideal for bathrooms, kitchens, terraces, balconies, and roofs Can be applied on water tanks, basements, and retaining walls Easy to mix in the recommended ratio (15:5) and apply Application possible using brush, roller, or trowel Resistant to water pressure, moisture, and weathering Helps prevent leakage, dampness, and structural damage Suitable for vertical as well as horizontal surfaces
