Should I seal my tile before grouting?
Sealing the tiles prior to setting them is the most ideal time. ... However you will absolutely need to seal porous tiles prior to grouting. Grout can and will stain a lot of tiles so protecting them from that is a must. After the grout has fully cured, which is about 3 days, a second coat of sealer should be applied.
Can you seal tile and grout at the same time?
The need for sealing tiles
You need to first understand that sealing can (or should) be done for both non-glazed tile and grout. ... If you seal tile and grout, then you get stain delays. It would prevent your grout from getting discoloured quickly. Regular cleaning also becomes much easier.