Koster NB 1 Grey is a BBA Approved mineral based,
sulphate resistant waterproofing system for positive and
negative side waterproofing against pressurised water.
It contains migratory crystallising and capillary-plugging
agents. It can be used for waterproofing against ground
moisture, and for non-pressurised and pressurised
water. Waterproofing done with Koster NB 1 Grey is
characterised by excellent resistance to pressure and
abrasion as well as chemical and sulphate resistance.