Old grout stains and etches. A cracked corner that keeps cracking usually means it was grouted instead of caulked.
Grout ages out on its own timeline — hard water etching, cleaning products, and ordinary wear all shorten its life, and at some point regrouting is simply due, independent of anything being wrong structurally. That is a straightforward job: remove the old grout, check the joints, and set new grout that matches the original color and width.
Corners and perimeters are a different material for a reason. Every plane change in a tiled space — wall to wall, wall to floor, wall to tub — needs a flexible caulk joint, not rigid grout, because the building moves slightly and grout cannot absorb that movement without cracking. A corner that has cracked and been re-grouted more than once is the same failure repeating, and the fix is to cut it out and caulk it properly rather than grout it again. We will also flag it plainly if a joint has clearly been open for a while and it is worth checking what, if anything, has been getting behind it.
Describe the job and we'll match you with an installer who builds the assembly in the right order.
Get a Tile InstallerA rough description is plenty — we will follow up to scope the details and set a time.