Yes, cockroaches can climb walls and ceilings. Many species have specialized pads on their legs that allow them to grip smooth and vertical surfaces, including painted walls, tile, glass, and even ceilings. This ability helps them access food, water, and hiding places throughout a space.
Because they can move so easily across surfaces, cockroaches often travel between rooms, cabinets, and even units in multi-unit buildings. This is one reason infestations can seem widespread or difficult to contain without professional treatment.
Their climbing ability also allows them to hide in high or hard-to-reach areas, which is why effective cockroach control focuses on targeting harbourage areas and travel paths rather than just treating visible surfaces.