I dropped a cast iron pan on the kitchen floor and put a crack right through a floor tile. My first thought was full replacement: chip it out, match the color, pray the matching tile still exists. Then a contractor friend showed me a fix that took fifteen minutes, and you can barely see it unless you know where to look.

When a Patch Works

A crack or a small chip can be repaired in place. If the tile is shattered into pieces or the crack is growing, replace it. But a single clean crack, or a chip on the edge, is a patch job.

The Fix

1. Clean the crack with rubbing alcohol and let it dry. Grease and dust keep the repair from bonding.
2. If the crack has a gap, fill it with matching caulk or epoxy first, then wipe the surface smooth.
3. Use a tile repair marker or a tiny bit of epoxy tinted to match the grout line color. You want the crack to disappear into the grout, not stand out.
4. For chips, fill the chip with white or matching epoxy, let it cure, then sand it flush with fine grit paper.
5. Seal the repair with a clear topcoat so water does not work its way in.

Matching the Color

This is where people give up, but you do not need a perfect match. You need a good enough match against the grout. Hold the marker or epoxy up to the grout line, not the tile face. In most kitchens, a crack that runs along the grout line at the right color is invisible.

• White and light gray grout: use a light epoxy or a porcelain touch-up pen.
• Colored grout: mix a tiny drop of paint into clear epoxy to tint it.
• Test on a hidden spot first. Epoxy dries darker than it looks wet.

When to Call It

A patched crack in a bathroom floor will last for years if it is not a load-bearing spot. Watch the repair for a few weeks. If the crack reappears, the tile is moving and you need the real fix.

My patched tile has survived two years of kitchen traffic and a dropped coffee mug. I notice it every time I mop, and then I forget where it is. Fifteen minutes of repair beat an afternoon of demolition.