NB 380 A/B is a high quality, polyurethane based, solvent free two component prepolymer. It creates a barrier against moisture on the floor before the application of concrete and screed mixtures. With its waterproof structure and low viscosity feature, it can also be used in reinforcement works on weak soils by penetrating into concrete. It is recommended for indoor use. It does not contain flammable and combustible solvents. Complies with ROHS directives.