Koster NB 1 Grey

Waterproofing done with KÖSTER NB 1 Grey is characterized by excellent resistance to pressure and abrasion as well as chemical and sulphate 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. Moving cracks should be considered construction joints and treated accordingly with KÖSTER Joint Tape, KÖSTER Injection Resins, or KÖSTER Joint Sealant FS. KÖSTER SB-Bonding Emulsion introduces flexibility to the material.

Advantages:

• Positive and negative side waterproofing against pressurized water.
• Crystallizing waterproofing system.
• Penetrates into the substrate and creates a chemical and
• mechanical bond that will last as long as the wall itself – inseparable waterproofing-substrate bond.
• Open to water vapor diffusion.
• Resistant against chlorides, sulphates and phosphates. Abrasion resistant.
• Certified for drinking water environments.
• Does not contain corrosion promoting ingredients.