If you must pre seal apply the sealer according to the product label but in such a way as to keep it off the edges that will need to bond with the grout.
Do you seal ceramic tile before grouting.
Next choose your sealer based on the type of tile you have and its.
Do you seal the tiles too.
Generally no would not seal the tile assuming that your tile is glazed ceramic or porcelain.
It depends on the type of tile you have.
If your tile is ceramic or porcelain it probably won t need to be sealed.
If you don t apply sealer first grout will stick tenaciously to the tile surface and it will be extremely difficult to get off.
Cleaning mortar out of grout lines and taking steps to remove thinset between tiles can help.
Man made tiles like porcelain or ceramic tiles won t experience this but pre sealing does help if they have little or no existing sealant on them.
In closing as long as you seal and maintain your tiles alongside the grout you can enjoy them for a very long time to come.
Seal before grouting seal your raw stone tiles before grouting.
Then grout anytime after the sealer has dried to the touch.
In fact cleaning tile joints before grouting is essential.
When you re finished cleaning the grout allow the area to dry for 45 minutes before sealing.
Many tiles especially natural stone such as slate marble and limestone are porous and need to be sealed.
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.
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.
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.
The very purpose of grouting is to fill those spaces once and for all with a paste that will harden into a waterproof seal.
Porcelain and ceramic tiles are not porous you have to seal natural stone tile.
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.