HI, i live in girgaum chowpatty on ground floor in a heritage building 75 years old. one of my bedroom wall (exetrior wall on outside) is wet and paint keeps falling off every year. I need a permanet solution since i want to build floor to ceiling wardrobes.
In the other rooms too a few places the below walls are slightly damp.
Will tiles, gypsum walls, water resistant chemicals fix this?