How Polycarbonate Multiwall Can Help You Save on Energy Costs • Polycarbonate mulwall is a popular building material that is known for its energy- saving properes. It is made up of mulple layers of polycarbonate sheets that are joined together to form a single panel. • This unique construcon allows the material to offer several benefits, including energy efficiency. In this arcle, we will explore how polycarbonate mulwall can help you save on energy costs.