Pictured is a shower that hasn't been used in several years. We wish to use it again, but it won't get heavy use at all. In most cases, not even daily or perhaps not even weekly.
As you can see, the floor is not in great shape. I think regrouting is definitely in order. The 'sealant' around the edges appears to be some sort of caulk. Not flexible, not crumbly, but hard. And some of the grouting is cracked.
I guess all grout and caulk on floor need to be removed and floor re-grouted. What I'm hoping for are recommendations for the best way to accomplish this. The thin grout lines and the smaller square inserts could make this tedious. I guess an oscillating tool with a carbide grit attachment? A grinder with a diamond wheel?
And for the caulk, same oscillating tool with a different attachment?
And what about the re-grout? Can I (should I) go back with epoxy? How would that get along with the existing vertical sanded grout lines (which I plan to leave alone)?
Summation: 1. Best tool (& attachment) and method to remove old sanded grout (with thin grout lines) and hardened 'caulk'?
2. Best grout to go back with? I'd like epoxy, but compatibility with old sanded grout on shower walls an issue?
3. Best method for the re-grout? I've not really had any experience, but am very capable at all sorts of projects big and small. I also wonder if there is a 'trick' to the edges, at the "inverted bullnose"?
Any good you tube videos for my purposes might be helpful as well.