KYK Megaİzo S803

UV Resistant Super Elastic Polyurethane Waterproofing Material

What is KYK Megaİzo S803?

Waterproofing products without UV resistance, when used on outdoor exposed surfaces, may experience cracking, yellowing, and performance loss over time due to the effects of sunlight.

KYK Megaİzo S803 is a polyurethane-based, single-component, solvent-free, and UV-resistant waterproofing material developed to eliminate these risks. It can be applied as a final topcoat and does not require any additional protective coating.

After application, it forms a seamless, elastic, and durable membrane layer on the surface, providing long-lasting protection.

Key Features

Megaİzo S803 is an aesthetic and high-performance waterproofing solution.

Application Areas

It is ideal for surfaces that will remain exposed without any additional covering:

• Terrace roofs
• Balcony floors

Additionally, it can be used for:

• Building exterior façades
• Interior horizontal and vertical surfaces
• Wet areas requiring waterproofing beneath ceramic tiles

Thanks to its UV resistance, it provides superior performance especially in open terrace applications.

Suitable Application Surfaces

Can be applied after primer application:

• Concrete
• Cement-based screed
• Cement-based plaster

Can be applied after surface roughening:

• Ceramic and glass surfaces
• Old bituminous surfaces
• PVC and metal surfaces

Before application, the surface must be completely dry, clean, sound, and free from contaminants.

Application Conditions

• Minimum 2 coats should be applied.
• Application temperature: Between +5°C and +35°C
• Waiting time between coats: Minimum 8 hours
• Full curing time: Approximately 7 days
• For areas exposed to traffic loads, a protective top coating is recommended.
• It should not be used against negative water pressure.
• Performance can be increased by applying 3 coats when required.

Technical Performance Values

When Should KYK Megaİzo S803 Be Preferred?

Megaİzo S803 is the right choice when the surface:

✔ Is continuously exposed to sunlight
✔ Has light pedestrian traffic
✔ Requires an aesthetic final coating appearance

Therefore, it is especially preferred for applications such as:

• Residential terrace areas
• Hotel and shopping mall terraces
• Open balconies
• Exterior façade protection applications

Frequently Asked Questions

Can it be used as a final topcoat?

Yes. Thanks to its UV resistance, it does not require an additional coating.

Can it be applied under ceramic tiles?

Yes. However, it has been specifically developed for exposed surfaces where a final topcoat application is required.

Is it suitable for heavy traffic areas?

It is suitable for light pedestrian traffic. If vehicle traffic or heavy loads are expected, an additional protective coating should be applied.

Is it resistant to negative water pressure?

No. It should only be applied on the positive water pressure side.

What color options are available?

The standard color is white.

Conclusion

KYK Megaİzo S803 is a professional waterproofing solution that offers:

• UV resistance
• Ultra elasticity
• No requirement for additional coating
• High adhesion strength
• Long-lasting performance

Especially in open terrace and balcony applications, it provides modern buildings with an aesthetic, durable, and reliable waterproofing protection system.