Ceresit CS 51 is a waterproof and flexible sealing material suitable for both indoor and outdoor use. Its acrylic-based formulation effectively prevents water and moisture ingress. Ceresit CS 51 features excellent adhesion properties on various surfaces and provides time savings with its quick-drying capabilities. Additionally, it is paintable, allowing for an aesthetic finish after application. This sealant can be confidently used around walls, ceilings, windows, doors, and in humid areas such as bathrooms and kitchens.