KYK MegaFuga Flex D201 | Ready-to-Use, Highly Flexible, Water-Repellent Grout (1–6 mm)

KYK MegaFuga Flex D201 is a ready-to-use grout material based on polymer emulsion with silicone additives. It has been specially developed for 1–6 mm joint widths. Thanks to its water-repellent structure and resistance to acids and alkalis, it is a reliable solution for swimming pools, chemically exposed surfaces, underfloor heating systems, and moving structural elements. It is suitable for both interior and exterior applications, including horizontal and vertical surfaces.

Application Areas

Covering Materials

• Anti-acid ceramics
• Industrial ceramics
• Granite
• Glass mosaic
• Glass blocks
• Marble surfaces

Challenging Conditions

• Swimming pools
• Areas requiring chemical resistance and waterproof performance

Moving Systems

• Underfloor heating systems
• Joint and corner connections in betopan, drywall, and fiber panel systems where structural movements need to be absorbed

Application Locations

• Interior and exterior spaces
• Floor and wall joint applications

Product Advantages

Highly Flexible Structure

Absorbs vibrations and structural movements. It can be safely used in mobile structures such as caravans and boats.

Water-Repellent and Antibacterial

Provides low water absorption and resistance against bacteria, mold, fungi, and algae formation.

High Chemical and UV Resistance

Offers long-lasting performance under harsh environmental conditions.

Stable and Vibrant Color Performance

Maintains its aesthetic appearance with durable color stability.

Easy-to-Clean Surface

Creates a dirt-resistant surface that allows easy maintenance.

No Shrinkage or Cracking During Curing

Provides a durable finish without shrinkage or cracks during the curing process.

High Abrasion Resistance

Ensures long-term durability against wear.

Solvent-Free and Environmentally Friendly

Provides a safer and more sustainable application solution.

Application Time:
Grouting should be started at least 24 hours after the covering material has been installed. If necessary, a second layer can be applied within 5–6 hours for insufficiently filled joints.

Application Steps

1. Surface Preparation

• Covering materials must be fixed for at least 24 hours before grout application.
• Joint gaps and surfaces must be cleaned from dust, dirt, and oil residues.
• Joint areas should be slightly moistened to balance surface absorption.

2. Application

Filling:

The product is applied into the joint gaps using a grout float with parallel and diagonal movements.

Removing Excess Material:

Excess material on the surface should be removed using a soft-edged spatula or trowel.

Cleaning:

Approximately 20 minutes after application (depending on ambient temperature), the surface should be cleaned with a damp sponge.

Final Finishing:

Surface smoothing should be completed before the product fully dries.

Dried residues can be removed using non-damaging synthetic abrasive fibers or suitable mechanical cleaning methods.

Application Conditions

Application temperature:
+5°C to +30°C

Application Recommendations

• For light-colored grouts, ensure that the substrate and adhesive moisture has completely evaporated to prevent color differences.
• MegaClean K902 is recommended for cleaning.
• The product is ready to use; do not add water or any other additives.
• Do not apply on unstable or weak surfaces.
• After application, protect the surface from wind, direct sunlight, and rain for 24 hours.
• Do not apply on frozen surfaces or surfaces at risk of freezing.

Technical Specifications

Packaging and Storage

Packaging:
3 kg plastic bucket

Shelf Life:
12 months (in unopened packaging, stored between +5°C and +25°C in a dry and cool environment)

Keep away from direct sunlight and tightly close the lid after use.

Conclusion

KYK MegaFuga Flex D201 is a highly flexible, water-repellent grout solution developed for 1–6 mm joint widths. With its superior chemical and UV resistance, it provides long-lasting performance without cracking or shrinkage, especially in moving substrates and challenging environmental conditions.

Frequently Asked Questions (FAQ)

1) What joint widths can KYK MegaFuga Flex D201 be used for?

It is suitable for joint widths between 1–6 mm.

2) On which covering materials can it be applied?

It can be used on ceramic, marble, granite, glass mosaic, and glass block surfaces in both interior and exterior applications.

3) Is it suitable for swimming pool applications?

Yes. It can be safely used in swimming pools where chemical resistance and waterproof performance are required.

4) How does it perform on underfloor heating systems?

Thanks to its high flexibility, it absorbs expansion and movement caused by temperature changes, making it suitable for underfloor heating systems.