- 1). Scrape the grout out of the grout joints between the tile pieces completely with an awl. Take care not to inadvertently chip or pry underneath the tile pieces.
- 2). Rinse the grout joints with water to remove any grout residue.
- 3). Mix the grout compound according to the manufacturer's instructions, as not all grout products are mixed the same way.
- 4). Spread the grout across the tile pieces with a foam grout float. Sweep the float back and forth at a 45-degree angle to work the grout into the grout joints.
- 5). Let the grout set for a few minutes, then wipe away the grout residue from the tiles with a damp cloth. Rinse the cloth every few minutes in clean water.
- 6). Allow at least 24 hours to expire for the grout to dry.
- 7). Apply a bead of silicone grout sealer across the grout to prevent mildew and allow the sealer to dry. Grout sealer can often be found within an application bottle, in which case you simply squeeze the bottle and apply the material across the grout. Apply the sealer with a small foam brush if you cannot find the product in an application bottle.
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