Replacing Grout In Ceramic Tile Floor. In this episode of sixty second fix with doug cornwell of alure home impro. Choose the correct type of grout based on the width of your tile joints and the location of the repair. In some cases, the only way to tear out the ceramic tile is with heavy equipment such as a jackhammer or air chisel.
Be sure to use a soft brush on porous or marble tile so it won't scratch the surface. Let the power tool do the work; Give the new grout about five minutes to sit.
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However, you may not always be so lucky. The blade should easily chew through the grout. A flexible grout called quartzlock 2 was our best solution. Take a grout saw and remove all of the existing grout from in between the tiles.