When you carefully consider what you want and need in a home exterior, you'll see why Sovereign Select Trilogy Insulated Siding is the pinnacle of modern practicality. This masterfully crafted laminated siding combines exceptional beauty, protection and energy efficiency with carefree maintenance. The luxurious, heavy-duty vinyl panel is fortified with EPS (expanded polystyrene) rigid foam insulation to create an energy-saving shield that also promises a markedly superior finished look for your home.