Uhu Por is a quick drying contact glue that is very resistant to aging which was specially designed for bonding polystyrene rigid foam to itself and to other materials like wood, paper, metal and different plastics. This adhesive cures in the glue joints more quickly than Tesa all-purpose glue because as a contact adhesive it will already have been allowed to dry beforehand. The total work time is, however, longer because 10 to 20 minutes must pass to allow for evaporation before joining the pieces together. The bond must be quickly and firmly pressed together which is not always possible in the case of constructions made from rigid foam. In those cases we therefore recommend Tesa all-purpose glue (for model making) or Decotric polystyrene foam glue(for large areas).