I was building a large shed (10×14x12) and I was not sure if I should use AZEX/Certainteed PVC boards or paint some clear pine. The PVC is just more then twice as expensive as clear pine $2.75/lft vs 1.25/lft. If I go with pine I have to buy paint and have the added labor or priming and painting. I would not paint the pvc i was going to use stainless screws (painted heads) either way. If I go with the PVC it should be 100% maintence free. But then I have to wonder when will I have to paint the pine next?