Yes, it is possible to recolor the grout, but it needs to be thoroughly cleaned before re-coloring. If possible, find out what brand and type of coloring was used, and re-apply the same brand or type.
TIP Before attempting to recolor the grout make sure it has not been sealed. This may be the reason the coloring is peeling. To test place several drops of water on an area of the grout where the color has peeled. If the water beads or does not penetrate the grout in several minutes, you may not be able to color the grout.
Article ID: 644
Created: January 21, 2022
Last Updated: January 21, 2022
Author: Pam Freitag
Online URL: https://sr-manual.com/kb/article/several-years-ago-we-had-the-grout-on-our-ceramic-tile-floor-colored-now-the-color-is-peeling-off-and-it-looks-terrible-can-i-have-it-recolored-644.html