Concrete surface hardener — essential preparation before waterproof coating
Poor-quality concrete that crumbles or sands when you rub it will cause any waterproof coating to peel off within months. This high-penetration polymer agent soaks into the weak surface layer, hardens it, and creates a solid bonding base. Use this before applying PU coating, JS coating, or liquid membrane to guarantee adhesion and long-term performance.
| Product Type | Water-based polymer penetrant / interface agent |
|---|---|
| Appearance | Milky white liquid |
| Solid Content | ≥ 18% |
| Penetration Depth | 2-5mm |
| Hardness Increase | 5-8 points (pencil hardness) |
| Drying Time | Surface dry 30-60 min, apply coating after 4 hours |
| Coverage | 0.15-0.25 kg/m² |
| Application | Brush, roller, or spray |
| Shelf Life | 18 months (sealed) |
| Packaging | 5kg / 10kg / 20kg |
| MOQ | 50 buckets |