Before you start ripping up tiles like a contestant on a home improvement gameshow, become an observer. Your floor will tell you its secrets if you listen. The biggest giveaway is warmth—if you have in-floor heating, a leak will create a suspiciously toasty “hot spot” that feels like the floor version of a feverish forehead.
Next, look for grout that’s darker or slightly damp in one specific area. It’ll look like a permanent coffee stain that refuses to scrub out. And if you feel a slight “give” under your foot, like walking on a marshmallow that’s lost its nerve, that’s a sign the subfloor below is getting a very unwanted bath.
If your water bill has suddenly doubled for no reason—say, you didn’t suddenly start hosting a synchronized swimming team—that’s your wallet screaming for help. Combine that with a weird warm spot, and you’ve got a case that Sherlock Holmes would call “elementarily frustrating.”
