Tom shows Kevin the new mudroom door and the work required to patch in new clapboards. Kevin meets electrician Allen Gallant and inspector Alix Berube to see what goes into a rough electrical inspection. At the back deck, Tom shows Kevin a hybrid railing system. Kevin visits kitchen designer Donna Venegas to see what's trending in kitchens. Then, project designer Michele Kelly and homeowner Jeremy Kieval show Kevin the layout and design choices for the new kitchen. Paint color expert Bonnie Krims gives Kevin and homeowner Jody Kieval a range of options for the exterior. On ASK THIS OLD HOUSE, Roger helps a homeowner remove overgrown shrubs from the front yard and replaces them with an edible landscape. Richard shares some tips on snaking drains, and Tom helps a homeowner replace some damaged pieces of vinyl siding. The guys ask, "What is it?"