Roger talks about the dry wells that will handle the water flowing from the roof of the house, and explains how his crew will build the retaining wall for the patio from Pennsylvania field flagstone. Norm goes over the house with the homeowner, explaining why separation between grade and the wooden structure is important. A pest control expert offers suggestions and preventive treatments to keep termites at bay. Kevin and Tom demonstrate the use of stepped dowels to install ironwood decking. Kevin visits another of architect Treff LaFleche’s projects. Finally, Norm and Rich explain the new air handlers and how high velocity duct work solves many of the traditional problems of running new ducts.