Updated November 1, 2026 · Reviewed for accuracy by an experienced Uniform Handyman pro before publication
Grout vs caulk
Grout fills the joints between tiles. Caulk belongs at changes of plane, such as where the tub meets the wall, and in corners, where movement would crack grout. Using the wrong one is a common cause of recurring cracks.
Repair or remodel?
| Situation | Usual approach |
|---|---|
| A few cracked grout lines | Remove and regrout those joints |
| Failed caulk in corners and at the tub | Remove completely and re-caulk |
| One or two loose or cracked tiles | Reset or replace if matching tile is available |
| Many loose tiles, soft wall or floor | Investigate moisture; may need remodel and licensed trades |
Find the moisture source
Loose tiles and stained grout around a shower valve or tub spout can mean a plumbing leak behind the wall. That's work for a licensed plumber before any tile repair.
Matching finishes
Exact tile matches are often impossible in older homes. Spare tiles left by the builder are worth keeping. Grout color can be matched closely but new grout may look brighter at first.