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| Repair Type | When to Use | Materials Needed | Repair Process | Expected Durability | Best for Polished Concrete? |
|---|---|---|---|---|---|
| Hairline Crack Filling | For very fine cracks (less than 1mm) that are cosmetic. | Concrete crack filler, epoxy resin, or polyurethane sealer. | 1. Clean crack with a vacuum or brush. 2. Apply filler or resin using a syringe or putty knife. 3. Let it cure, then polish to blend. | 5-10 years depending on foot traffic. | ✅ Blends well with polished concrete if done correctly. |
| Small Crack Repair (1-3mm) | For slightly wider cracks that could worsen over time. | Epoxy or polyurethane crack injection system. | 1. Widen crack slightly to ensure good filler penetration. 2. Clean and dry the crack. 3. Inject epoxy or polyurethane and let it cure. 4. Re-polish to match the floor. | 10-15 years, longer with proper sealing. | ✅ Epoxy blends with polishing, but colour-matching may be needed. |
| Structural Crack Repair (3-6mm) | For cracks that could lead to serious damage if left untreated. | High-strength epoxy injection or cementitious repair mortar. | 1. Clean and widen the crack slightly. 2. Apply bonding primer if needed. 3. Fill crack with high-strength epoxy or repair mortar. 4. Grind and polish to match the surface. | 15-20 years, depending on load-bearing conditions. | ⚠️ Requires colour-matching for seamless integration. |
| Control Joint Restoration | For existing control joints that have cracked or deteriorated. | Polyurea joint filler or semi-rigid epoxy. | 1. Clean out the joint and remove old material. 2. Apply polyurea or epoxy filler. 3. Grind and polish smooth. | 10-20 years, depending on traffic load. | ✅ Necessary for maintaining polished floors. |
| Spalling & Surface Crack Repair | For cracks that have chipped or caused surface deterioration. | Polymer-modified cement repair mortar, self-leveling overlay. | 1. Remove loose concrete and clean the area. 2. Apply a bonding agent. 3. Fill with polymer-modified repair material. 4. Re-polish the surface. | 10-15 years with proper sealing. | ⚠️ Surface blending may be challenging. |
| Deep Structural Crack Repair (6mm+) | For major cracks that affect the slab's integrity. | Structural epoxy injection, steel reinforcement (if needed). | 1. Determine if reinforcement is necessary. 2. Clean and widen the crack. 3. Inject structural epoxy and allow full curing. 4. Grind and re-polish to restore finish. | 20+ years if properly reinforced. | ❌ May require full resurfacing for a seamless finish. |
| Slab Stabilization (for Crack Prevention) | For cracks caused by shifting subgrade or uneven settling. | Foam or cementitious slab lifting injection. | 1. Identify weak or sinking areas. 2. Drill injection ports. 3. Inject foam or cementitious filler to stabilize. 4. Grind and polish as needed. | 20+ years depending on foundation stability. | ✅ Prevents future cracks in polished concrete. |
| Full Resurfacing | For floors with multiple deep cracks that need complete renewal. | Micro-topping, overlay system, or full slab replacement. | 1. Grind down the existing surface. 2. Apply micro-topping or overlay. 3. Polish the new surface. | 20+ years if properly maintained. | ✅ Best option for extensive damage. |
Our team of experts is ready to transform your floors with precision and craftsmanship. Don't settle for ordinary when you can have exceptional. Contact us now for concrete floors in England and Wales by emailing us at info@britishconcretepolishing.co.uk or by filling in the form below and our team will get back to you shortly.