KÖSTER NB Elastik 2K | Flexible Cement-Based Waterproofing Mortar

Product Description

KÖSTER NB Elastik 2K is a two-component, cement-based waterproofing mortar that provides complete protection against water with its crack-bridging capability and highly flexible structure. It delivers reliable and long-lasting performance in areas with a risk of cracking, such as bathrooms, terraces, foundations, and exterior surfaces.

Its special polymer-modified formula provides strong adhesion to surfaces and ensures permanent protection without losing waterproofing integrity over time.

Technical Specifications

Structure: Two-component system (powder + liquid)

Flexibility: Elastic structure with crack-bridging capability

Water Resistance: Complete waterproofing against positive water pressure

Application Method: Applied by brush, trowel, or spraying method

Coating Thickness: Two coats, approximately 3 mm total thickness

Compatible Surfaces: Concrete, plaster, screed, brick

Advantages

High Flexibility: Resistant to minor structural movements and settlement of substrates.

Strong Adhesion: Bonds firmly to the applied surface and maintains long-term performance.

Easy Application: Provides practical use with an applicator-friendly consistency.

Reliable Waterproofing: Provides effective protection against water leakage.

Wide Application Range: Suitable for both new construction projects and renovation applications.

Application Areas

Bathrooms, showers, and other wet areas

Balconies, terraces, and roof substructures

Elevator shafts and foundation retaining walls

Water reservoirs and drinking water tanks

Wall and floor surfaces with minor crack risks

Exterior surfaces exposed to temperature changes

Application Instructions

Surfaces must be cleaned from dust, oil, and loose particles and should be left slightly damp before application.

The two components are mixed thoroughly until a homogeneous consistency is achieved.

The first coat is applied horizontally, and the second coat is applied vertically.

Sufficient drying time should be allowed between coats. During the curing period, the applied surface should be protected from sudden temperature changes and direct sunlight.

Frequently Asked Questions (FAQ)

What type of water pressure is KÖSTER NB Elastik 2K resistant to?

It provides effective waterproofing against positive water pressure.

Can it come into contact with drinking water?

Yes, it can be safely used in suitable projects according to the application guidelines.

Is the application difficult?

No. It can be easily applied using a brush, trowel, or spraying equipment.

Is it resistant to cracks?

Yes. Thanks to its elastic structure, it provides protection against minor crack formations.

KÖSTER NB Elastik 2K provides flexible, reliable, and long-lasting waterproofing performance for both interior and exterior applications. It is an effective and durable solution, especially for surfaces where cracking risks may occur.