Breakfast-room work in the Lake Forest, Ill., kitchen project includes installing drywall and a concrete floor, along with bracketed posts crafted by carpenter Norm Abram. Elsewhere, a dip in the kitchen floor has been addressed with a steel beam in the basement, the floor has been resheathed with plywood and polyurethane foam insulation blown into the walls. Meanwhile, host Steve Thomas and homeowner Heidi Smith visit a kitchen designer in Hinsdale, Ill. Then, in “Ask This Old House,” Thomas and landscaper Roger Cook demonstrate snow shovels and snow blowers, while contractor Tom Silva repairs a broken sash cord on an old window.