The variable diffusion openness of PU Safe Filler allows its application both indoors and outdoors. PU Safe Filler dries plasto-elastic, waterproof, chemically neutral and odourless. The high flexibility of the filler is particularly important in the case of thermal and structural movements of the components, because it ensures an uninterrupted sealing surface. PU Safe Filler adheres well to all conventional building materials, such as PVC and aluminium coated with paint or coloured plastic film. Classically, the sealant is used in door and window assembly when working with PU foam.