LANKO 135 Feather Edge is a highly polymer modified fast setting cementitious feathering mortar, for use on irregular/uneven concrete floors, prior to the application of floor coverings, such as tiles, carpet, vinyl etc. It requires the addition of only potable water to achieve a high fluid consistency producing a smooth, level, and hard surface. Lanko 135 Feather Edge can be applied in multiple layers with each layer being no more than 10mm thick.