The standard advice for small rooms has always been the same: keep it simple, keep it light, keep it sparse. Pattern drenching does the opposite, wrapping a room in a single motif across walls, ceiling, upholstery, and curtains. Designers are increasingly arguing it works better, and the pattern drenching wallpaper trend has pushed beyond powder rooms, with clients now open to papering living rooms and bedrooms too, according to designers surveyed by House Beautiful.