We’re in the process of building a log cabin and came across some problems which, to keep a long story short, I’m not going to elaborate on. But, the inside of the cabin has been getting rained on for over a month and the walls are getting very dark with mold. Is there any way, when we get the house finished, that the darkness of the walls will be fixable and able to be cleaned and lightened to look the way they origionally did?