1-C. As illustrated in the graph (Figure 2,) the moisture content of unpainted wood inside a house may change according to the seasons from 4% to about 14,% while the moisture content of a painted piece of kiln-dried wood in the same house will only vary around the 8% line.As illustrated in the graph (Figure 2,) the moisture content of unpainted wood inside a house may change according to the seasons from 4% to about 14,% while the moisture content of a painted piece of kiln-dried wood in the same house will only vary around the 8% line.