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KOSTER NB 1 Fast is a fast setting, cementitious coating containing crystallizing and capillary-plugging agents. It may be used for waterproofing below grade against pressurized and non-pressurized water in combination with KOSTER Polysil TG 500. KOSTER NB 1 Fast is fast setting, and may be exposed quickly to water pressure.
Coverage: Approx. 70-180 sq ft/bag per coat.
Technical Data Sheet