Two very different systems are both called polished concrete, but they are built differently, wear differently and cost differently.
The fastest way to understand the two systems. This short video walks through how each finish is made, how they perform, and where each one makes sense.
MPC vs Grind & Seal: the two systems both called polished concrete.
Here is the part most people do not expect. A mechanically polished floor and a grind and seal floor can look almost identical once they are finished, the same stone exposure, the same sheen, the same clean reflective surface. Stand on a finished floor and it is genuinely hard to pick which system is underneath.
So the finish you choose is rarely about the look. It comes down to how each one is built, because that is what decides how it performs, how long it lasts and what it costs to live with. A mechanical polish is worked into the slab itself, while grind and seal is a coating sitting on top, and that single difference drives everything below.
It really comes down to how long you plan to own the floor. Mechanically polished concrete costs more upfront but lasts decades with minimal upkeep. Grind and seal is cheaper to complete, but you should budget for periodic sand and re-sealing over its life, which can be costly and difficult logistically.
A true mechanical polish in the slab itself. Higher upfront investment, but a 50+ year lifespan with simple ongoing maintenance and one of the lowest whole-of-life costs of any floor.
A topical coating over a ground slab. Lower upfront cost, but expect periodic sand and re-sealing throughout the life of the floor, with its own strengths in stain and chemical resistance.
Here is how mechanically polished concrete (MPC) and grind and seal (G&S) stack up across the three things that matter most.
What you pay, and how long it lasts.
| Feature | MPC | G&S |
|---|---|---|
| Initial Price | Higher | Lower |
| Lifespan | 50+ years with minor self-maintenance | 5 to 10 years before sand & re-seal |
| Long-Term Value | Excellent | Good |
Living with the floor: upkeep, disruption and fixing damage.
| Feature | MPC | G&S |
|---|---|---|
| Maintenance Requirements | Refresh stain protection roughly every 10 years | Full sand & re-seal every 5 to 10 years |
| Maintenance Disruption | Usually no need to move furniture or equipment | Furniture, stock or equipment will need removal |
| DIY Maintenance | Homeowner can refresh stain protection | Typically needs a professional sand & re-seal |
| Damage Repairability | Localised repairs often possible | Larger area or full-floor re-seal often required |
| Ease of Cleaning | Excellent | Good |
How each finish holds up to traffic, spills, slips and the elements.
| Feature | MPC | G&S |
|---|---|---|
| Slip Ratings | Up to P3 | Up to P5* |
| Scratch Resistance | Excellent | Fair |
| Stain Resistance | Fair | Excellent |
| Chemical Resistance | Fair | Excellent |
| Heavy Traffic | Excellent | Excellent |
| Moisture / Breathability | Breathable | Can be affected by moisture |
| Peeling / Delamination Risk | None | Possible |
| UV Stability | Excellent | Depends on sealer |
*Slip ratings depend on the specific sealer and any anti-slip additives used. We will recommend the right finish for each area of your project.
The tables show the what. Here is the why, so you can weigh up which finish suits your space, budget and how you will use the floor.
MPC is a true mechanical polish. We refine the slab through progressively finer diamond tooling and densify it, so the finish comes from the concrete, not a coating sitting on top. It is the gold standard for homes and commercial spaces, and it carries one of the lowest whole-of-life costs you will find in any floor.
Grind and seal grinds the surface to your chosen stone exposure, then protects it with a tough topical sealer that mimics the polished-concrete look. It is faster and cheaper to complete, and the sealer gives it real strengths the polished surface does not have, but that coating is also what needs maintaining over time.
Tell us about your space and how you will use it, and we will recommend the finish that fits your look, budget and how long you plan to own the floor.
