500ml Waterproof Crack Filler Sealant for Roof, Concrete & Cement
500ml Waterproof Crack Filler Sealant for Roof, Concrete & Cement
500ml Waterproof Crack Filling Sealant — Fast-Curing, Multi-Surface Protection
Keep water out for good with this professional-grade 500ml Crack Filling Sealant. Whether you're tackling a leaking roof, a cracked concrete floor, or a damp basement wall, this high-strength caulking compound bonds fast, cures strong, and delivers lasting waterproof protection across a wide range of building surfaces. Made in Mainland China.
Key Features
- Rapid Curing: Initial set in as little as 30 minutes, with full dryness achieved in approximately 2 hours — minimising downtime and letting you get on with your day.
- High-Strength Bond: The powerful adhesive formula fills cracks in concrete, cement, masonry, and ceramics, forming a tough, flexible shield that resists further cracking or expansion.
- Multi-Layer Water Barrier: Advanced multi-layer sealing technology blocks water penetration and preserves long-term dryness, significantly extending the service life of treated surfaces.
- No-Tool Application: Engineered with liquid-style fluidity for effortless coverage at any angle — simply apply directly from the bottle to cracks, corners, and joints without specialist tools.
- Versatile Use: Ideal for roofs, basement areas, garage floors, concrete slabs, cement walls, bathroom tiles, kitchen joints, window sills, and more.
- Weather-Resistant Durability: Formulated to withstand temperature fluctuations, moisture, and UV exposure for long-lasting performance indoors and outdoors.
Specifications
| Volume | 500 ml |
| Color | Gray |
| Type | Caulk / Crack Filler |
| Initial Cure Time | ~30 minutes |
| Full Drying Time | ~2 hours |
| Package Size | Approx. 21.6 × 13.8 cm (8.5 × 5.43 in) |
| Application Materials | Concrete, Cement, Masonry, Ceramics, Tile |
| Usage Scenarios | Roof, Basement, Garage, Bathroom, Kitchen, Walls, Floors, Window Sills |
| Origin | Mainland China |
What's in the Box
- 1 × 500ml Concrete Crack Filler Sealant
How to Use
- Prepare the surface: Clean the crack or joint of dust, loose debris, oil, and moisture.
- Apply directly: Pour or squeeze the sealant into the crack, ensuring full coverage. Use a spatula or gloved finger to smooth if needed.
- Allow to cure: Let the filler set for 30 minutes before light exposure, then allow 2 hours for a full, waterproof finish.
- Inspect and reapply: For deeper or wider cracks, a second layer may be applied once the first coat has set.
Note: Due to variations in monitor settings, the product color may appear slightly different from images. Allow a 1–2 cm size tolerance due to manual measurement.
For guidance on safe handling of construction sealants and adhesives, refer to the U.S. Consumer Product Safety Commission (CPSC) for product safety standards and best practices.
Frequently Asked Questions
Q: What surfaces can the 500ml crack filler sealant be used on?
A: This waterproof crack filling sealant is suitable for a wide range of surfaces including concrete slabs, cement floors, roofs, basement walls, masonry, ceramic tiles, garage floors, kitchen joints, bathroom grout, and window sills. Its liquid fluidity allows it to reach into narrow cracks and corners with ease.
Q: How long does the crack filler take to dry and cure completely?
A: The sealant reaches an initial set in approximately 30 minutes, making it ideal for urgent repairs. Full drying and a hard, waterproof finish is achieved in around 2 hours under normal temperature and humidity conditions. Avoid water exposure during the curing period for best results.
Q: Do I need special tools to apply this crack filling sealant?
A: No specialist tools are required. The product is designed with a liquid-like consistency that allows direct application from the container at any angle. For smooth finishing, a gloved finger or basic spatula can be used, but neither is mandatory for effective application.
Q: Is this sealant suitable for outdoor and roof waterproofing?
A: Yes. This crack filler is specifically formulated for outdoor use, including roof waterproofing, and is engineered to resist weather fluctuations, moisture ingress, and UV exposure. It effectively blocks water penetration on roofs, exterior walls, and bungalow surfaces for long-lasting results.