Is Pressure Treated Wood Safe for Indoor Use?

We get this question a lot. The simple answer is pressure-treated lumber can be used in any interior application except cutting boards and countertops. Some have also asked, after they’ve found pressure-treated lumber installed inside their homes, if there is any danger in having it indoors. The answer is no. There is no danger of either leaching or off-gassing.  But these answers beg another question: Why would you use treated lumber indoors? The reason lumber is treated is to protec...