Touching Up Grout – Ask THE Handyman St. Louis – Get It Done

I have an area of grout in my shower that is coming loose. Could this be a problem? Can you tell me how to fix it?

Yes, yes, yes! Grout coming loose or any areas where grout is missing can be an expensive problem. If water gets behind the tile, it will cause the drywall to become like wet cardboard. As it does, the tile will no longer have anything to hold on to and will begin to come out away from the wall. Depending on how old your home is, you may not be able to match the existing tile and it is not a good idea to reuse old tile (they never lay flat like a new one). If you can’t match the old tile, you end up having to replace all of the tile in the tub area, or the whole bathroom! Expensive!

To take care of this problem, you’ll first need to remove any loose grout. A grout saw is an inexpensive hand held tool that will do this. The process is to slowly, but with some force, slide the tool along the grout line as needed to remove the grout. Be careful not to scratch the tile. When the grout is removed, brush any dust away. You’re now ready to re-grout.

Whenever grout is touched up, the new color may not match perfectly with the old grout. Besides getting a close color to match the old grout, you need to look closely to see if the grout is “sanded” or “unsanded”. If it is sanded, when you look closely, you will see small bumps within the grout, about the size of sand particles, hence the term “sanded”. If your grout lines are very narrow, usually these will be unsanded. So, when you go to a tile store, you can get the proper color, and each color will either come sanded or unsanded. If your grout is anything other than white, you may want to pick up a grout color chart from the store, take it home, then pick out the color that closely matches your grout.

When mixing the grout, be sure to follow the mixing directions carefully, so that the grouting is done properly. You don’t want to have to do the project again later. With the grout mixed, use a grout float to apply it. This is a hard rubber float, which allows you to spread the grout, going in a 45 degree motion to the grout joints, forcing it in. After the grout is in, again, following the directions, you’ll need to come back with a clean sponge and wipe the haze off the tiles.

I would recommend after 2 weeks, that you seal the grout. This is an easy process of wiping on a clear sealer (which has the consistency of water), being sure to get it not only on the tiles, but the grout as well. Sealing the grout will keep the color true and prevent mildew.


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