On the North side of my house the stucco continues to fall off. I had the whole house restuccoed 4 year ago and since then I've had 4 different companies try to repair. The area is approx 12 x 15 where the stucco won't stick. There used to be a water softener on that side of the house where a 30 gallon of salt was kept in a rubber bucket. Don't know if that has anything to do with it. There aren't any visible water leaks. Does anybody know what I can do?