Use a deck cleaner that’s labeled as safe on PVC, said Jeronimo Ramirez, who sells TimberTech’s Azek PVC and capped composite decking through Advantage Lumber. (TimberTech Composite Deck Cleaner — ...

For example, deck brighteners tend to fight rust well on most natural wood decks, whereas natural cleaning ingredients like vinegar work wonders on composite materials. Below, we'll explain the common ...