Why vinyl? Vinyl continues to be the overwhelming material of choice to homeowners. Vinyl windows have dominated the booming home improvement business for many years. They rapidly replaced wood and aluminum as the most popular material used in residential homes. This popularity is due in part to vinyl's characteristics that deliver impressive thermal performance and eliminate maintenance. Vinyl's toughness and durability make it the most widely used plastic for building and construction applications such as siding, windows, single-ply roofing membranes, fencing, decking, wall coverings and flooring.