KÖSTER NB System | Cement Based Crystalline Waterproofing Mortar (2K)
General Description
KÖSTER NB System is a two-component, cement-based waterproofing mortar that provides deep waterproofing protection on concrete surfaces through crystalline technology. It fills micro cracks in concrete and mineral surfaces with its active crystallization effect and prevents water penetration. Instead of only coating the surface, it penetrates into the concrete structure and provides permanent protection.
What is KÖSTER NB System?
Structure: Two-component (cement + liquid reactive additive)
Working Principle: Penetrates into the concrete through a crystalline reaction and blocks cracks and capillaries where water could pass
Application Area: Resistant to positive and negative water pressure
Suitable Surfaces: Concrete, exposed concrete, plaster, screed
Application Areas
Foundations and basements
Water tanks and surfaces exposed to water
Elevator pits
Retaining walls
Tunnels and other underground structures
All reinforced concrete structural elements requiring internal or external waterproofing
Advantages
Provides deep crystalline waterproofing
Resistant to positive and negative water pressure
Creates long-term protection inside the concrete structure
Suitable for structural elements in continuous contact with water
Easy application: Can be applied by brush or spraying method
Provides a permanent and non-temporary waterproofing solution integrated into the concrete structure
Application Instructions
The surface must be cleaned from dust, oil and loose particles; it should be damp but free from standing water.
The two components are mixed according to the specified ratios until a homogeneous consistency is achieved.
It is applied by brush or spraying method.
Two coats are generally recommended when required.
Drying begins after approximately 24 hours depending on ambient temperature; 7 days is recommended for full curing.
Frequently Asked Questions (FAQ)
1. What type of water pressure is KÖSTER NB System resistant to?
It provides effective performance against both positive and negative water pressure.
2. How many coats should be applied?
Generally, two coats are recommended; however, the application may vary depending on project requirements.
3. Can it be used in contact with drinking water?
Yes, it can be used in areas such as drinking water tanks in accordance with technical documentation.
4. How long is the drying time?
Drying starts within approximately 24 hours depending on ambient temperature, while full curing is recommended after 7 days.
KÖSTER NB System provides a permanent and reliable waterproofing solution that penetrates deep into concrete with its crystalline structure. It is an ideal choice for professionals seeking long-lasting, effective and technically advanced waterproofing solutions in modern construction projects.