Polycarbonate Pool Enclosures – Custom built polycarbonate pool enclosures are a wise wise choice for the experienced builder. The Sundance Supply approach is a Multiwall Lexan Polycarbonate sheet covering and the Base & Cap Installation System. The customer provides the frame and remaining building components, for an elegant addition solution. Together this approach provides a watertight, attractive and long life solution, at a fraction of the cost of prefab kits. Substantial savings can be achieved. See Pool Enclosure Intro.