Just noticed that the 1966 shower tiles have a lot of brown stains in the grout. Got a product for stain removal but it says it might etch older tile, so I'd like to avoid using it.
Bigger project is fixing the areas where the grout has come off, in 1/4" to 3/4" long strips. The grout line is really thin; less than 1/8" so the standard scraper I can buy is too wide. But wider than a grinding wheel on a Dremel. Maybe I can find some sort of a burr with the proper diameter to fit the width. Can I then use sealer over both old & new grout?
Bigger project is fixing the areas where the grout has come off, in 1/4" to 3/4" long strips. The grout line is really thin; less than 1/8" so the standard scraper I can buy is too wide. But wider than a grinding wheel on a Dremel. Maybe I can find some sort of a burr with the proper diameter to fit the width. Can I then use sealer over both old & new grout?