Köster NB 1 Grey is a mineral coating containing crystallising and capillary-plugging agents. It can be used for waterproofing against ground moisture, and for non-pressurized and pressurized water. Waterproofing completed with Köster NB 1 Grey is characterized by excellent resistance to pressure and abrasion as well as excellent chemical resistance. Applied as a closed layer, Köster NB 1 Grey is absolutely waterproof to pressurized water up to 13 bar. Due to its penetration into the structural member, the slurry develops an intense bond to the substrate and the capillaries are plugged. Besides the hydraulic curing of the sealing slurry, crystallizing reactions are activated in the slurry, which can lead to a self healing effect when micro-cracks develop. Waterproofing with Köster NB 1 Grey should only be carried out on substrates that are free of moving cracks.
Köster NB 1 Grey can be used in new construction and repair for horizontal and vertical waterproofing of concrete, masonry or cementitious plaster, on porous concrete, on shotcrete, in new basements, inside elevator shafts, tunnels, leaking retaining walls, underside of leaking ceilings, tanks, silos, sewage treatment plants, manholes, drinking water tanks etc..
Consumption = please refer to Technical Data Sheet
