Vinyl composite doors are created by routing and milling cellular PVC, a malleable and more workable form of traditional PVC. It can be customized to create a one of a kind door that is durable and virtually maintenance free. A simple cleaning with your garden hose is enough to keep it looking great. Vinyl composite is rust-resistant, which makes it a great choice for seaside locations, as well as salt-, insect-, rot-, moisture-, and fungus-resistant.