500ml Concrete Crack Filler Sealant – Waterproof Quick-Dry

Seal Cracks Fast with Heavy-Duty Waterproof Concrete Filler

Keep your home protected from water intrusion with this 500ml Concrete Crack Filler Sealant. Formulated for rapid curing and powerful adhesion, it creates a high-strength, waterproof seal on concrete, masonry, cement floors, walls, roofs, corners, and more — no special tools required. Whether you're tackling your garage floor, bathroom corners, kitchen surfaces, or outdoor structures, this versatile sealant gets the job done quickly and reliably.

Key Features

• Quick Curing Formula: Sets within approximately 30 minutes, minimizing downtime so you can finish repairs fast and get back to your routine.
• Powerful Bonding Agent: Creates a high-strength barrier that halts crack expansion on concrete, masonry, and cement-based surfaces, ensuring lasting structural stability.
• Multi-Layer Waterproof Protection: Advanced sealing technology forms a robust barrier against water penetration, helping maintain dryness and extending the lifespan of your surfaces.
• No-Tools Application: Liquid fluidity design allows effortless application at virtually any angle, making it easy to reach tight corners, edges, and irregular surfaces without special equipment.
• Wide Application Range: Suitable for roofs, basements, garage floors, bathroom areas, kitchen surfaces, window sills, walls, and more — both indoors and outdoors.
• Weather-Resistant Durability: Built to withstand a variety of weather conditions, ensuring your repairs hold up long-term in both interior and exterior environments.

Specifications

• Volume: 500ml
• Color: Gray
• Drying Time: Approximately 2 hours (initial set ~30 minutes)
• Package Size: Approx. 21.6 × 13.8 cm (8.5 × 5.43 inches)
• Application Surfaces: Concrete slabs, cement floors, roofs, walls, masonry, and more
• Type: Caulk / Crack Filler Sealant
• Made in Mainland China

What's in the Box

• Concrete Crack Filler Sealant × 1 (500ml)

Note: Colors may vary slightly due to different monitor/screen settings. Allow 1–2 cm variance in size due to manual measurement.

Helpful Resources

For guidance on safe use of sealants and adhesives in and around your home, visit the U.S. Consumer Product Safety Commission (CPSC) for consumer safety tips. You may also find useful home improvement and sealing tips at EPA Indoor Air Quality to ensure proper ventilation when using sealant products indoors.

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Frequently Asked Questions

Q: What surfaces can I use this concrete crack filler sealant on?

A: This 500ml concrete crack filler sealant is designed for a wide range of surfaces including concrete slabs, cement floors, masonry, roofs, walls, garage floors, basement surfaces, bathroom corners, kitchen areas, and window sills — both indoors and outdoors.

Q: How long does the concrete crack filler take to dry?

A: The sealant achieves an initial set in approximately 30 minutes, making it ideal for urgent repairs. Full drying time is approximately 2 hours under normal conditions.

Q: Do I need any special tools to apply this sealant?

A: No special tools are needed. The liquid fluidity of the formula allows you to apply it directly to cracks and corners at virtually any angle, making it a simple, user-friendly solution for a wide range of surface repairs.

Q: Is this sealant waterproof and suitable for outdoor use?

A: Yes. The multi-layer sealing technology creates a strong waterproof barrier against water penetration. It is also weather-resistant, making it suitable for both indoor and outdoor applications including roofs, walls, and garage floors.

Q: What size is the product and what color does it dry to?

A: Each package contains 500ml of sealant and measures approximately 21.6 × 13.8 cm. The sealant dries to a gray color, blending naturally with most concrete and cement surfaces.