UltraCare 5-Sides Sealer is a water-based, penetrating sealer designed to protect the back and four sides of natural stone tiles before installation. It helps prevent moisture penetration, stains, and efflorescence caused by rising damp while allowing water vapour to escape without affecting the bond between the stone and the adhesive. Suitable for interior and exterior use on marble, granite, limestone, slate, travertine, and other natural stones.