Roger starts on the new bluestone front walk despite some significant grade challenges. Around back, tile contractor Mark Ferrante is installing porcelain tile made to look like slate in the screen porch. Kevin recaps the vanity project and meets Richard to see the sink and faucet set. In nearby Acton, Roger visits a stone salvage yard to see how Gavin Johnston is selecting and fabricating antique granite for the front walk and custom house marker. At the end of the day, the granite steps are in place and Roger sets the house marker. On ASK THIS OLD HOUSE, electrician Scott Caron helps a homeowner replace an undersized ceiling fan with a more appropriate one. Kevin, Tom, Richard and Roger ask, "What is it?" Later, Roger visits a bonsai nursery to learn the art of sculpting trees.