New answers tagged grout
This greatly depends on the type tile you have. If it is a manmade tile such as porcelain, or ceramic, then you don't have to worry about sealing it. Most natural stone tiles, especially softer or water permeable stone such as marble, limestone/travertine, and slate should be sealed as well. This would ideally be done prior to grouting to prevent the stone ...
The grout was not installed properly. The grout probably had too much water in it and/or was wiped too early removing the grout from the joints as it was sponged. Removal and properly grouting will fix it. Mix the grout with the proper amount of water and carefully wipe the tile so the grout is not removed from the joints.
Top 50 recent answers are included