Harbro Stonebond Stone Repair Glue
Stonebond is a high-performance stone repair filler designed to blend naturally with light stone surfaces. It is ideal for bonding, filling, crack repair, or use as a seam glue for professional masonry projects and DIY repairs.
Available in Clear/Transparent, Black, White or Beige/Straw.
Harbro Stonebond is a premium, knife-grade stone mastic engineered specifically for vertical and overhead applications. Whether you need a stone filler for chips or a high-strength stone repair glue for structural bonding, this two-part polyester resin provides a permanent, professional finish.
⚡ Key Benefits
- Fast-setting: 3–10 minutes at 25°C.
- Knife-grade formula: Ideal for vertical and overhead work.
- Strong bonding power: For durable, permanent repairs.
- Silky smooth spread: For effortless application.
- Semi-Polishable: For a seamless final finish.
- Pigment-friendly: For accurate colour matching.
- Minimal shrinkage: High-purity resin formulation.
- Hardener included: With every tin.
✔ Suitable For
• Marble Repairs
• Granite Filling
• Quartz Seams
• Onyx & Travertine
• Limestone Filling
• Sandstone Repair
• Porcelain Repair*
• Engineered Stone
⏱ Curing Time Chart
| Temperature (°C) | Workable (Min) | Gel (Min) | Complete Cure (Hr) |
|---|---|---|---|
| 0 ~ 10 | 8 | 10 | 12 |
| 10 ~ 20 | 5 | 7 | 8 |
| 20 ~ 30 | 3 | 5 | 6 |
| 30 ~ 40 | 2 | 3 | 4 |
🧪 Application / Usage
This stone repair filler is excellent for crack repair and creating near-invisible joints of filling.
- 2–3% hardener mix (approx. a pea-size amount of hardener to a golf-ball size of resin).
- Apply with a spreader; remove excess before curing.
- Once cured, the material can be sanded, ground, or polished to match the stone’s original luster.
