This is the back of a shower we had to remove and rebuild. The water damage was pretty bad from the poor workmanship. The shower wasn't more than 5 years old and in the bathroom looking at the shower from the inside, there wasn't any noticeable damage. You could see very little water damage until we started to remove the flooring and stucco. The shower was not going to be replaced. Our original job was a whole house remodel with a two story room addition.