The self-leveling floor system begins with the preparation of the concrete substrate, ensuring a smooth and clean surface. The substrate is then primed with KÖSTER Polysil TG 500, which hardens the substrate and reduces the mobility of salts. Following the priming process, KÖSTER NB 1 Grey slurry is applied in two layers crosswise for an optimal waterproofing. This cementitious waterproofing solution, fortified with crystallizing agents, offers exceptional resistance to pressure, abrasion, and chemical elements, making it suitable for both positive and negative side waterproofing applications. Once the waterproofing layer is completed, KÖSTER SL Premium self-leveling underlayment is poured, creating a flawlessly smooth and level surface that’s ready to receive various flooring systems. This high-quality, fast-setting compound creates a smooth, tension free, level surface within hours. It accommodates thicknesses ranging from 5 to 15 mm and can be feathered out to 2 mm with suitable tools, making it ideal for uneven concrete, providing a durable foundation for subsequent flooring systems such as tile.
