I am having glass tile installed. It is in a high use area...backsplash with lots of good cooking going on...should it be sealed, and if so by what kind of sealer. The glass tile is frosted. Thanks.

We will soon have a combination of glass and natural stone tiles on our backsplash. What's the best product to seal the tiles, in order to prevent cracking, staining, and to make it easier to clean?

Also what's the best type of grout to use, or are they all the same?

Thanks all!!!