Polished concrete floors have surged in popularity in both residential and commercial settings over the past decade. Industrial-look interiors, open-plan kitchens and commercial reception areas increasingly feature this material. But polished concrete is not indestructible — and when damage occurs, many owners aren’t sure whether it can be repaired.
Common Polished Concrete Floor Damage
- Cracks — concrete cracks as it cures and can crack further with building movement; some cracks are structural, others are surface-only
- Chips and spalling — impact damage causing the surface layer to chip or flake
- Scratches — from dragging furniture or sharp objects across the surface
- Staining — oil, grease, acid and rust stains penetrate the concrete matrix
- Pitting — small holes in the surface, often from trapped air bubbles in the original pour or acid damage
What Can Be Repaired?
Cracks — non-structural cracks can be filled with colour-matched cementitious or epoxy filler, then the area re-polished to blend. The repaired crack is usually visible on close inspection but much less obvious than the original damage. Structural cracks require a builder or structural engineer before cosmetic repair.
Chips and spalling — small chips can be filled and blended. Larger areas of spalling are more challenging as matching the texture and aggregate of the surrounding floor perfectly is difficult; results are good but the repair area may be noticeable in raking light.
Scratches — surface scratches can be reduced by re-polishing the affected area, but this requires careful feathering to avoid a visible “polished patch” that’s more reflective than the surrounding floor.
Staining — depends heavily on the stain type and depth of penetration. Surface stains can often be treated; deep stains that have penetrated the concrete matrix are harder to remove without affecting the surrounding area.
Setting Realistic Expectations
Polished concrete repair is one of the more challenging surface repair disciplines — the material is inherently variable in colour and texture, and the polished finish must be blended across an area, not just spot-repaired. A good specialist can achieve excellent results that are invisible at normal viewing distance, but it requires genuine expertise. Be wary of low-cost generalist tradespeople for concrete repair.
Contact Shazam Repairs for a polished concrete floor assessment →
