Mapeflex PU S25 is a high-quality polyurethane sealant designed for sealing internal and external vertical expansion and construction joints. It offers excellent elasticity, easy application, and long-lasting performance. Suitable for various surfaces, including façades, concrete panels, and metal panels. Its thixotropic consistency allows for quick application, and it can be painted over after curing. Classified as F-25 LM according to ISO standards, ensuring reliable performance. Perfect for providing flexible and durable seals in construction projects.