Watch humidity ruin more than just drywall. It warps wood, makes paint bubble, and turns basements into swamps. Seems like any home project has to wait for the perfect weather window. Your boards bowing out is just the latest victim in a long line of humidity crimes.
Ugh, humidity is the worst for this stuff! My boards curled up like potato chips last summer. You gotta check the forecast for days after and run a dehumidifier first.