Ardex K 301 is a robust, self-levelling external concrete resurfacing compound, perfect for outdoor applications. Its designed to smooth and level rough and uneven surfaces in preparation for laying floor coverings, tiles, or other finishes. It can be applied from 2mm to 20mm in one application and is walkable after approximately 2-3 hours. This high-quality product is suitable for both internal and external use, ensuring long-lasting performance.