Concrete self-levelling refers to a polymer-modified cement compound, used to create smooth, level surfaces. Its high fluidity makes it easy to place, trowel, feather and finish, as well as being suitable to create a base for tiles, carpet, vinyl, parquetry, timber flooring or other stylish floors. If there is paint, epoxy, waterproofing, magnesite, vinyl, lino, tiles or glued carpet on the sub-floor, you will need concrete grinding before self-levelling.