Silicone Waterproof Sealant – Weatherproof Adhesive for Tiles

Lvkang 9900 Weatherproof Silicone Sealant – Professional-Grade Waterproof Adhesive

Seal it right the first time with the Lvkang 9900 Weatherproof Engineering Adhesive. Whether you're tackling a bathroom tile job, sealing a skylight, or weatherproofing outdoor metal joints, this high-performance silicone sealant delivers a smooth, durable, and completely waterproof finish — every single time.

Why You'll Love It

• High Flexibility & Tear Resistance: Engineered to handle stretching, pulling, and extreme temperature swings without cracking or losing grip. From scorching summers to freezing winters, this sealant stays elastic and reliable.
• Smooth & Easy Application: The specially formulated extrusion ensures a fine, even bead with no air bubbles, rough edges, or uneven surfaces — giving you a clean, professional-quality finish with minimal effort.
• Waterproof & UV-Resistant: Formulated to resist water penetration, UV radiation, and high heat. Perfect for both indoor and outdoor use, it creates a permanent barrier against leaks, cracks, and weather damage.
• 3 Colour Options: Available in White, Black, and Transparent to seamlessly blend with walls, tiles, stone, and metal surfaces without altering the appearance of your project.
• Versatile Applications: Ideal for curtain walls, skylights, aluminium panel structures, sunroom frames, tile grout sealing, window frames, and metal joints — suitable for home DIY, renovation, and professional construction use.

Product Specifications

What's Included

• 1 × Silicone Waterproof Sealant (colour & size as selected)

Where to Use It

This silicone sealant is the go-to solution for a wide variety of sealing tasks:

• Bathroom & kitchen tile grouting and edge sealing
• Window frames, door surrounds & weatherstripping
• Curtain walls & aluminium panel structures
• Skylights & sunroom frames
• Metal joints & roofing seams
• Outdoor repairs and waterproofing projects

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Helpful Resource

For guidance on safe use of adhesives and sealants in consumer and construction applications, visit the U.S. Consumer Product Safety Commission (CPSC).

Learn more: Sealant

Frequently Asked Questions

Q: What surfaces can this silicone waterproof sealant be used on?

A: This weatherproof silicone sealant bonds effectively to a wide range of surfaces including ceramic tiles, glass, metal, aluminium panels, stone, concrete, and most plastics. It is suitable for both interior applications like bathrooms and kitchens, and exterior applications such as curtain walls, skylights, and roofing joints.

Q: How long does the silicone sealant take to cure, and what is its shelf life?

A: Cure time will vary depending on temperature and humidity, but generally the sealant forms a skin within 30–60 minutes and reaches a full cure within 24–48 hours under normal conditions. The product has a shelf life of 12 months when stored below 27°C in a cool, dry environment.

Q: Is this sealant suitable for outdoor use and extreme weather conditions?

A: Yes! The Lvkang 9900 is specifically formulated for weatherproof performance. It is resistant to UV radiation, high temperatures, moisture, and freezing conditions, making it an excellent choice for both indoor and outdoor sealing projects, including windows, skylights, and exterior metal joints.

Q: Which colour should I choose for my project?

A: Choose White for bright tiles, white grout lines, or painted surfaces. Choose Black for dark-coloured materials, metal frames, or modern minimalist aesthetics. Choose Transparent/Clear when you want the sealant to be virtually invisible on glass, natural stone, or multi-coloured surfaces.