How to Do the Thinnest Grout Lines

Once the hard and time-consuming work of tiling is complete, and all the tiles are affixed to the wall, including any half-cut or shaped tiles, the final part of the process is the grouting. There are several reasons why you might choose to have thin grout lines between tiles, one of which is that thinner lines won't detract from the look of tiles that make up a continuous decorative pattern. For a neat finish in thin grout lines -- those that are smaller than a sixteenth of an inch -- choose an unsanded grout, because this is slightly more sticky than sanded grouts and adheres better to the tiles while you press it between the gaps.

Unsanded grout
Grout spreader
Damp cloth
Dry cloth

Instructions

- 1
  Spread the grout evenly over the tiled area, using a grout spreader. The grout spreader may be supplied with the grout, or you might need to purchase one separately. Don't worry about getting grout on the tiles. This is unavoidable and won't damage the tile.
- 2
  Press the grout into the thin gaps between the tiles. You can use the grout spreader to do this. Work the grout firmly into the areas between the tiles, easing any grout on the tile surface back over the gap with the spreader. You can also use your fingers in hard-to-reach areas, such as corners, but be sure to wash your hands afterward.
- 3
  Wipe the surface of the tiles with a damp cloth to remove excess grout. Wring and rinse out the cloth after each wipe to avoid smearing the excess. Inspect the grout lines to make sure they are all even. Fill in any areas you may have missed.
- 4
  Wait for the grout to dry completely. This may take 24 hours. When the grout is completely dry, buff the surface with a dry cloth.

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