How to Repair Tile Grout
Material and Tools:
Grout saw
Large sponge
Grout float
Rags
Tile grout
Spray bottle
Step1:
Be sure to purchase grout that matches the color of your existing grout. Tile grout is available in four types: acrylic, sanded, un-sanded, and epoxy. If the space between the tiles is larger than 1/8″ then use sanded grout. Anything less than 1/8″ you can use the other three choices. If you are repairing grout on marble tiles, never use sanded grout as it will scratch the tiles. Use either acrylic, un-sanded, or epoxy
Step2:
Use a grout saw to remove the loose or damaged grout. Be very carefully not to chip or crack the tile.
Step3:
When the joints are all cleaned spray them with water. Wipe off any excess water with a rag.
Step4:
Mix the grout according to the manufacture’s directions.
Step5:
Using a grout float, spread grout over all the joints, filling them completely.
Step6:
Remove excess grout off the tiles using a large sponge. Be sure that you don’t remove any grout from the joints. Repeat cleaning until tiles are clean.
Step7:
Allow tiles to dry until they have a cloudy haze. Remove haze using a dry rag until they take on a polish look.