Cleaning mortar out of grout lines and taking steps to remove thinset between tiles can help.
Do i need to seal ceramic tile before grouting.
It depends on the type of tile you have.
Sealing is done to strengthen tile or grout s defenses against dirt spills and erosion of grout but not all tile needs to be sealed.
If your tile is ceramic or porcelain it probably won t need to be sealed.
Now it is necessary to apply more sealer for the grout and possibly for the tile.
When you re finished cleaning the grout allow the area to dry for 45 minutes before sealing.
Next choose your sealer based on the type of tile you have and its.
Epoxy grout exception epoxy grout is a tough water resistant material that doesn t require sealer but it s not right for every tile application.
This may result in more sealer on the tile and less on the grout joints than is desirable.
In fact cleaning tile joints before grouting is essential.
After the tile are installed and grouted the tile is all or partially sealed and the grout joint is not.
Both dust and old grout pieces can prevent a good set.
There are some exceptions to this so check with your manufacturer to be sure.
Porcelain and ceramic tiles are not porous you.
Certain types of tile surfaces such as non porcelain ceramic tiles do not need to be sealed.
If the tile is unglazed and porous as mostly all travertine is then you will need to seal the tile before you grout it so that the grout does not soak.
Seal the tile not the grout many tiles especially natural stone such as slate marble and limestone are porous and need to be sealed.