Method for renewing tile joints.
There are several options for restoring the freshness of tile joints, but only one of them will be effective.
Some suggest simply painting the tile joints in the desired color with latex paint;
Others suggest filling the tile joints with new grout over the old moldy grout;
Both of these options will not be able to stop the growth of the fungus and after a while it will reappear on the surface of the tile joints.
The only correct solution to such a situation would be to completely clean the old joints from the old grout. This can be done using improvised means, for example, using a knife or spatula. But, in this case, there is a risk of damaging the surface of the tile. Therefore, for these purposes, it is better to purchase a special tool designed for grouting tile joints. After the joints are completely cleaned, they should be thoroughly washed with soapy water. After that, the joints must be treated with an antifungal compound. After that, you need to let the joints dry completely and you can start filling them with new grout.
Well, which grout to choose is up to you, because you already know how long a regular cement-based grout will last. And also how much time and effort it takes to restore the appearance of your bathroom.
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