The second floor of the Winchester, Mass., house is jacked up (carefully) by carpenter Charlie Silva, while plumbing-heating expert Richard Trethewey drains the house's heating system and disconnects the radiators. And homeowner Kim Whittemore dismantles the inside part of the kitchen chimney. Outside, unwanted trees are removed. On “Ask This Old House,” segments include a primer on maintaining paint brushes. Also: contractor Tom Silva helps a couple fill in gaps in their 160-year-old pine floor. Steve Thomas hosts.