Engineered timber on your deck is an extremely serious matter. Wood corrosion moves quickly and spreads from one area into the other. It disturbs the arrangement of your deck and makes it deteriorate over time. High degrees of rot signify it is time to get a Deck Replacement. And a small timber rust that goes unchecked will finally ask you to put money into an entirely new deck. If you discover wood rust, then take immediate action to see just how far the rot has spread. When it is localized, remove the affected wood and substitute it. Then thoroughly clean out the deck and then seal its surface having a high level wood deck sealer.