I Just finisheed a shower tiling and am confused about grout sealing. My questions:
--Does the sealer add any strength to the grout?
--Does it help make the grout waterproof?
--Is there a sealer that I can apply to both the grout and tile at the same time, or do I have to keep sealer off the tiles and just paint the grout linws? My understanding is that sealer helps make grout stainproof. What's the scoop?