Landscaper Roger Cook lays sod (12,000 square feet of it) on the grounds of the Concord, Mass., cottage, while host Kevin O'Connor, landscape architect Stephanie Hubbard and homeowner Janet Bernard go over gardening plans. Indoors, the focus is on painting and flooring (Irish-limestone tiles and engineered maple floors), and carpenter Norm Abram visits a flooring factory in Danville, Va. On “Ask This Old House,” projects include replacing a rotten oak floorboard and improving home water quality with a water softener and filter.