Koster SB Bonding Emulsion is a universally usable synthetic liquid for all cementitious mortars, plasters and sealing slurries. Koster SB Bonding Emulsion is solvent, plasticiser, and filler-free. When added to mineral based systems, the synthetic liquid increases elasticity and flexibility and reduces water absorption. Multi-purpose liquid plastising dispersion for use with all cement-based mortars, plasters and sealing slurries. Solvent free, plasticiser and filler free. The product provides a plastifying effect, increases the elasticity and reduces the water absorption of mineral systems. It is waterproof after full cure. Typical field of application; as an additive for waterproofing with NB 1 Grey.