Tom shows Kevin how he's installing Southern yellow pine board accents in key spots for architectural interest, and to coordinate with the prefinished maple flooring that Norm is installing. Tile's going in the master bath, and the roof deck gets PVC porch boards and a custom rail treatment. In the second half of the hour, on ASK THIS OLD HOUSE, Roger shows a homeowner how to properly mulch his garden beds. Then, Roger, Kevin, Richard and Tom ask, "What Is It?" Afterward, Richard installs a natural gas line for a barbeque grill.