Most homes are built using green lumber, which is just another term for wood that is still wet. The problem is that when wet wood dries it’s going to shrink, and when parts of your house shrink it can mean trouble. Nail pops are sometimes caused by wood shrinkage, although this isn’t a serious problem. Mold, however, can easily grow on green lumber and infest the wood before it’s even used in construction. For more information, take a look at our new article on green lumber.