SIKALASTIC-833R is a liquid applied roof waterproofing membrane based on a pure resin of polyurea, consists of a pure polyurea resins, bi-component, elastomeric, without internal protection layer; which once polymerised conforms a jointless elastic lining, in form of a layer completely bonded to the support (concrete, mortar, ceramic, steel and other types of metals, wood, and polyurethane foam (PU) (≥ 50 kg/m³)). Depending on support condition, other type of primer may be advisable.