Novoplan 21 is a fast-hardening, self-leveling smoothing compound designed for thicknesses up to 10 mm. It is ideal for smoothing interior surfaces of both new and existing substrates, including heated screeds, in preparation for the installation of PVC, rubber, and carpet flooring. Additionally, it can be used to smooth existing ceramic tile, terrazzo, and natural stone flooring, provided the surfaces are solid, dry, and clean. Novoplan 21 can be applied in layers ranging from 1 to 10 mm per coat and is suitable for areas with wheeled traffic. The compound has a consumption rate of 1.6 kg/m² per mm of thickness and is available in 20 kg bags.