[header] How to fix a leaking ceiling [title] Look for identifiable signs of moisture. [step] To fix the leak, you'll have to locate the area of your ceiling that is leaking water. If you're unsure of where the water is coming from, look for drywall panels that are sagging or crumbling. 
You may also notice areas of the ceiling with coffee-colored stains. [title] Lay down drop cloths or tarps under the leak.