Hi,
The grout on my shower walls is starting to crack in several places. I think I may have to regrout the tiles.
I've never grouted anything before, and I would like to learn as much as I can before I remove any of it. I've read a lot of online guides, but sometimes they omit information, or their instructions conflict with other sources. I was hoping you guys could clarify a few things.
I'm curious about the depth I'm supposed to remove the grout to. Many of the Dremel guides say to remove 1/8" of the grout; other places say to remove 1/2-2/3 the thickness of the tile; and a few of the sites for floor tiles say to remove the grout all the way to the substrate. At this point I'm leaning towards removing 1/8", as the tiles are 1/4" thick. Is this reasonable or should I remove all of it? I think the tiles are mounted right onto the drywall. I'm going to be using a manual grout saw, not a Dremel, if that makes a difference.
Should I definitely be using a Portland cement-based grout and a separate silicon sealant? The stuff I bought before doing any research is some sort of "Premixed Grout for Wall Tiles" that is "siliconized and ready to use." It says it's "water repellant", but it's probably bad anyway, right?
That's all I can think of at the moment. Thank you in advance for your response.