Start by looking for visible clues like damp spots, bubbling paint, stains, or a musty odor. Then isolate the source with simple checks before opening any drywall.
- Turn off all water fixtures. Watch the water meter for 15 minutes; movement suggests a hidden leak.
- Listen at the wall/ceiling for dripping or hissing.
- Check the room or plumbing directly above the stain.
- Probe gently for soft drywall and trace the highest point of the stain.
- Use a flashlight or moisture meter if you have one.
- If water is active, shut off the main supply and protect belongings.
Updated: 2025-12-22 00:00:00
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