SEALEX SW is a water-based, silane-siloxane penetrative sealer that provides long-lasting water repellence and surface protection for concrete and masonry. Formulated for deep absorption, it is ideal for concrete structures, plaster, bricks, porous stones, and highly alkaline substrates. SEALEX SW allows the substrate to breathe while preventing water ingress, discoloration, and chloride or CO₂ penetration. UV- and weather-resistant, it performs reliably in extreme conditions and withstands freeze-thaw cycles. Its single-component design ensures easy application, making it a practical, effective solution for preserving surface integrity in both architectural and general construction environments.