KYK Megaİzo PU 6 S404

Ultra Elastic Two-Component Waterproofing Material

Proper waterproofing with the right product is essential for long-term durability and structural safety. Especially in underground applications, a flexible system with high resistance against groundwater, hydrostatic pressure, and surface movements should be preferred.

KYK Megaİzo PU 6 S404 is a professional waterproofing solution based on bitumen-modified polyurethane, featuring a two-component structure and ultra-elastic performance. After application, it forms a seamless membrane layer that completely covers the surface and creates a strong barrier against risks caused by underground water.

Outstanding Technical Features

FeatureDescription
Chemical StructureBitumen–polyurethane based, two-component
Application AreaInterior and exterior areas
Water Pressure ResistanceFull protection against positive water pressure
Crack BridgingHigh performance with ultra-elastic structure
Temperature Resistance-30°C / +90°C
Root ResistanceResistant to plant roots (suitable for green roof systems)
Chemical ResistanceResistant to 10% acid and alkaline solutions, oils, detergents, and seawater
ApplicationSeamless and joint-free membrane
Mechanical PerformanceHigh adhesion strength

Thanks to its bitumen-modified polyurethane formulation, KYK Megaİzo PU 6 S404 provides a balanced combination of flexibility and mechanical strength.

Application Areas

KYK Megaİzo PU 6 S404 can be safely used in:

✔ Waterproofing of foundations and curtain walls below ground level
✔ Retaining walls
✔ Structures exposed to groundwater effects
✔ Green roof systems (root resistant)
✔ Wet areas such as bathrooms, kitchens, and balconies
✔ Parking deck applications and similar areas
✔ Horizontal and vertical surface applications

It is suitable for both new construction projects and renovation applications.

Advantages Provided

  • Provides comprehensive protection against water and moisture
  • Resistant to pressurized water
  • Creates a seamless and fully waterproof membrane
  • Adapts to surface movements by bridging cracks
  • Provides long-lasting performance
  • Easy to mix and apply
  • Provides fast curing performance
  • Offers maximum safety in underground applications
  • Suitable for green roof systems thanks to its root resistance

Performance Values

TestValueStandard
Initial Adhesion Strength>2.0 N/mm²TS EN 14891
Elongation at Break>1500%ASTM D 412
Tensile Strength at Break>3.5 N/mm²ASTM D 412
Water TightnessSuccessfulDIN EN 1928
Hardness45 ± 5 Shore AASTM D 2240
Reaction to FireClass EEN 13501-1

The elongation capacity above 1500% provides superior crack-bridging performance against possible surface movements and structural cracks.

Application Details

  • The product consists of two components: A + B components must be mixed completely until a homogeneous consistency is achieved.
  • Apply a minimum of 2 coats.
  • Recommended total dry film thickness: approximately 2 mm.
  • Coats should be applied in perpendicular directions.
  • After mixing, the product must be used within a maximum of 30 minutes.
  • A minimum waiting period of 3 days is required before soil backfilling.
  • It should not be applied against negative water pressure.
  • Surface preparation must be carried out according to manufacturer instructions.

Consumption and Packaging

PropertyValue
Consumption1.8 – 2.2 kg/m² (for 2 mm thickness)
Packaging20 kg + 20 kg set (A+B)
ColorBlack
Shelf Life12 months

Frequently Asked Questions

Can it be used below ground?

Yes. It is commonly used for foundations, curtain walls, and retaining walls.

Is it suitable for green roof systems?

Yes. Thanks to its plant root resistance, it can be safely used in green roof applications.

Can it be applied under ceramic tiles?

Yes. It can be applied together with the appropriate primer and system details.

Is it resistant to negative water pressure?

No. It should only be used against positive water pressure.

Is it suitable for vehicle traffic?

No. It is not suitable for direct vehicle traffic without a protective coating. A suitable protective layer must be applied.

Conclusion

KYK Megaİzo PU 6 S404 is a powerful waterproofing solution for professional projects thanks to its ultra-elastic structure, high resistance against pressurized water, and plant root resistance.

Especially in foundation and underground waterproofing applications, it provides reliable long-term performance.

With proper surface preparation and correct application methods, KYK Megaİzo PU 6 S404 delivers maximum protection in waterproofing systems, which is one of the most critical stages of structural safety.