Polished concrete is an existing slab ground and refined with progressively finer diamond tools until it has a smooth, glossy surface. It adds no extra layer, so the slab’s natural character, joints, and repairs stay visible. The crew usually hardens the slab with a densifier partway through and finishes with a thin protective guard.
How Polished Concrete Is Made
Polishing works like sanding a wood tabletop. The crew starts with coarse diamond tooling to flatten and open the surface, then moves through finer and finer diamonds until the concrete itself shines. The process is grinding or honing the slab, adding dye if you want color, densifying, applying a guard, and polishing to the gloss you pick.
How far the crew goes sets the look. Stopping early gives a soft satin finish, and going all the way gives a mirror-like shine. That choice is covered under sheen levels.
For cost, care, pros and cons, and where it works best, read our full guide to polished concrete floors.
Polished Concrete FAQ
What are the downsides of polished concrete?
It’s a hard floor, so it can feel firm underfoot and get slick when wet or dusty. It also can’t hide much. Cracks, patches, and stains in the slab usually stay visible. The guard on top needs refreshing over time in busy areas.
Can I polish concrete myself?
It’s not a practical DIY job for most people. It takes heavy grinders, a full set of diamond tooling, and serious dust control, since grinding concrete releases silica dust that can harm your lungs. Most homeowners hire a crew with the right equipment.