High-strength self-leveling compound for thin-layer leveling of concrete surfaces and cement screeds before gluing parquet, ceramics, PVC, and other floor coverings in residential, commercial, and similar buildings. The product is not intended as a top coat. The thickness of the layer ranges from 2 mm to 10 mm, with a drying time of 12 hours per mm of thickness. It is suitable for both interior and exterior surfaces (for exterior use in a system with BK-HidroStop waterproofing coatings) and is compatible with underfloor heating systems.