First you have to chisel out the old grout then you have to carefully fill in the new grout trying to achieve the finish that the professional tiler managed in the first place.
Re grout kitchen wall tiles.
If the space is larger than 1 8 of an inch use a sanded grout.
Begin by protecting adjacent surfaces from spilled grout using painter s tape and rosin paper or plastic sheeting.
You can achieve a great grout finish without having to regrout between the tiles by using the humble grout pen.
Measure the space between the tiles.
Regrouting between tiles is a nightmare.
Remove remaining grout manually.
Pick up some grout and force it into.
Laying down the grout 1.
Apply the grout to the tile using a squeegee or grout spreader.
Apply a generous amount of grout to your grout joints along your tile floor using the rubber grout.
Work the grout into the gaps.
Choose the correct type of grout based on the width of your tile joints and where the repair is being done.
Sponge the tile and grout joints.
Clean up the grout lines.
If you are using a powdered grout pour a little water into a bucket then add the grout.
Fit an oscillating tool with a blade designed for grout removal.
How to grout tiles 1.
If the width is 1 8 of an inch or smaller use an unsanded grout.
Remove excess sealer from the surrounding tile immediately using a clean dry cloth.
Roll the wheel down the center of the grout lines saturating the grout completely with sealer.