Sem-Light leveling compound is an ultra-light, waterproof, leveling compound, ready to be used for renovation works of walls and ceiling, as well as for filling small gaps, holes and cracks, inside and outside. The base for the leveling compound can be walls and ceilings inside and outside of: plaster in gypsum, cement, plasterboard, block in gypsum (type Pro-Monta), plaster primer, fiberboard, cellular concrete, etc. Not applicable on a plastic or metal base. After drying, the nails are not cracked or chipped on the surface.