Leveller is a fast setting, protein free, cement based self-levelling compound used to level out rough and uneven floors and screeds in preparation for laying floor coverings. Leveller can be applied to a depth of 12mm in one application when simply mixed with water or to a maximum depth of 25mm when mixed with 3 - 5mm aggregate. Leveller is fast setting and it will accept light foot traffic after 4 hours and after 8 hours ceramic, porcelain and natural stone tiles can be applied. Soft flooring such as linoleum and vinyl can be applied after 48 hours. Leveller is only suitable for use over solid substrates such as sand/cement screed and concrete.