Cement-based crystalline waterproofing slurry that penetrates the mass of the concrete and makes it waterproof. Remains permanently active, and therefore, continuously protects the construction from any water presence. It is capable of sealing hairline cracks, even if they appear after construction. Resistant to both positive and negative hydrostatic pressure. Suitable for waterproofing basements, foundations, manholes and tanks. Certified according to EN 1504-2 and classified as a coating for surface protection of concrete. CE marked.