Master carpenter Norm Abram arrives on site to find the demo crew suspended over the roof dismantling the top of the unused kitchen chimney. Architect David Stirling and homeowner Kim Whittemore look at the latest plans for expanding the kitchen and improving flow on the first floor. Meanwhile, landscape contractor Roger Cook meets with entomologist Bob Childs to explore ways to save the property's signature hemlocks from a potentially fatal infestation of woolly adelgids, which have been attacking forests up and down the East Coast.