Now, walk around your house like you’re looking for treasure. Feel the floors near walls, under cabinets, and around the base of your water heater. Warm spots on the floor can mean a hot water pipe is leaking. Soft spots or warped wood are dead giveaways.
I once found a leak in my laundry room because I slipped on the linoleum—turns out the hose to the washing machine had a pinhole. It was like finding a needle in a haystack, but my socks got wet first.
How to Find a Water Leak Inside a Wall - Trojan Plumbing
A quick word on walls and ceilings
If you see a bubble of paint or a yellow stain on the ceiling, that’s a sign. Don’t poke it unless you want a surprise shower. That’s your water leak writing a love letter to your drywall.