SIKALASTIC-852R is a liquid applied roof waterproofing based on pure polyurethane, consists of a polyurethane resins, bi-component, elastomeric, without internal protection layer; which once polymerised conforms a jointless elastic lining, in form of a layer completely bonded to different supports (concrete, mortar, ceramic, steel and other types of metals, polyurethane foam (PU), and wood chipboard (DMF)). Depending on support condition, other type of primer may be advisable.