SikaLevel-025 Patch is a fast drying, self-curing, polymer-modified, cement-based patching compound that rapidly develops high compressive strength. Use for smoothing, leveling, patching, and filling cracks, holes and voids in concrete and approved wood underlayments prior to the installation of floor coverings. From featheredge to ½” floor coverings can be installed 1 hour after application. Mix with Sika Latex R to use as an embossing leveler or patch over properly prepared vinyl sheet goods, vinyl composition tile (VCT), cement terrazzo, and residual cutback adhesive surfaces.