Tile spacers make beautiful results easy when used properly. Insert them vertically in floor tile -- and horizontally in wall tile -- one pair per each edge of the tile. Avoid the mistake of placing them in the corner where four tiles meet. You have a choice among common sizes, which will depend on what size grout line you envision.
What Size for Your Job?
You have a lot of flexibility in terms of selecting a grout width.
- If you're using small-format tiles, such as those 8 by 8 inches and smaller, the tiles may come with built-in lugs that make spacers unnecessary. If you want a standard look, tile installers recommend grout lines of 1/16 inch for walls and 1/8 inch for floors.
- For regular-format tiles, between 12 by 12 and 16 by 16 inches, you can stay with those measurements or go up to 3/16, depending on the tile and the look you want.
- For large-format tiles, 18 by 18 inches and larger, you can actually get away with very tight grout lines of 1/16 inch or even 1/32 inch, usually created by the lugs. This creates a smooth final space that looks like solid tile.
When you install 4 by 4, or 6 by 6, bathroom tub tile, for example, you can set it closely at 1/6 inch for a standard look or wider if you want a dramatic effect. Even if a tile has built-in lugs, you can add spacers for a wider grout line.