this is the most efficient way to diagnose where the drywall has been exposed to moisture you will take a screwdriver and run up and down if it continues to go through very easy you will need to remove the whole piece just not my point of view like And subscribe for more tips DIYs and tricks #diycrafts #construction #diy #drywaller #diyideas #interiordesign #drywallfinish #1ksubscribers #kitchen #diyprojects