Depends on the room. For a non-street-facing kitchen, breakfast nook, or living room where daytime privacy is sufficient, no liner is needed. For master bedrooms, street-facing rooms, or any room where you need night privacy with interior lights on, pair Egg Shell Gridline as the daytime panel in front of a blockout curtain in a coordinating warm tone. The pale ivory layered in front of a deeper blockout actually creates a beautifully dimensional warm-on-warm window treatment.