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Grout the tile
When you’re done setting tile, let the mastic dry overnight. Then mix your grout according to the instructions on the package. Mix only enough grout to cover about one wall at a time. Spread the grout with a grout float , making sure to pack the joints completely. Wipe off excess grout with the edge of the float, working diagonally to the tile. Avoid getting grout into the inside corner joint or the 1/16-in. gap at the floor.
Wait about 15 minutes, depending on the room temperature and humidity, for the grout to begin firming up. Pressing your fingertip into the grout should barely leave a mark. Then begin working the grout with a damp, not wet, sponge. Wring out the sponge frequently in clean water in a bucket (not a sink). When all of the grout is removed from the face of the tile, and the joints are consistent and smooth, let the grout set up for an hour before polishing the tile with a damp microfiber cloth.
Finish the project by filling the inside corners with caulk that matches the color of the grout. If you have a wood floor, don’t caulk the gap at the floor.
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Meet the Expert:
“Subway tile is the same but different,” says expert Dean Sorem. “In most ways, it installs just like any wall tile. But because it’s set in a brick joint pattern, some steps are a little different and a little trickier.” Dean has installed acres of subway tile, and in the following pages, he’ll show you how to get it right.
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