In this episode, Tom repairs 130-year-old pocket doors, and a new type of solar goes in. Jenn works with landscaper Fred to build a boulder wall. Richard gives a lesson on the modern furnace, and father Mark and son Erik Ferrante showcase the art of mosaic tile installation. In this episode, Tom explains the architecture, installation, and maintenance of white cedar shingles. Richard repairs a hose spigot, and Jenn builds and plants a self-watering vegetable garden.