The Roastar sandwich panel construction has one piece front roof and back with no joints! This construction method is Roadstar Caravans vision for the future. Our fibreglass sandwich panel construction will withstand all of Australia’s weather extremes, from the tropics of far North Queensland to the winter cold of Tasmania. The fibreglass panels on our caravans have an extrusion foam core. Roadstar has found extrusion foam to be more durable and much more thermally efficient than traditional ex