When I grout a natural stone tile, I like to seal the stone before grouting. That helps keep the grout out of the stone pores and makes it easier to clean off the grout. Then I'll give everything another sealer coat when it's done. It's probably good to give the stone 2 coats anyway.
But it's a pain with the newer round "pebble" mosaics. They're round, so the sealer tends to dribble down the sides of the stones, where I don't want it (it interferes with the grout adherence to the stones where I do want the grout.) Is there anything you guys do special in this situation?
Seems I just had too much liquid loaded on the foam sponge brush. Those hold a lot of liquid! If I squeezed most of the liquid off and used a pretty dry brush, I still had plenty of sealer on the brush. Take a first pass of the brush on a piece of waste newspaper or something if necessary. I wouldn't want to do the whole floor that way after grouting, but it worked good this way by only getting the stones wet where the brush touched it, without dribbles.
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