Will the deck tiles last a long time?

This will vary among the different product lines and quality. For instance Ipe hardwood timber is highly resistant to decay and insect attack, for up to 40 years! Ironwoods liek Ipe, Curupay, Rosewood will not rot, split or crack like soft woods such as cedar and redwood, even if left untreated. The Atlantic City, New Jersey boardwalk was re-built with ironwood as was the Treasure Island Casino boardwalk in Las Vegas. Ironwoods are the wood of choice for commercial applications with heavy traffic. The polypropylene backing on these tiles is stronger than conventional plastics and will not crack or degrade over time. We stabilize the base with a UV resistant compound which prevents the base from breaking down over time. The frame is what allows for free and clear drainage when you run the hose over the deck or if it rains. This backing system is the best available and will last a lifetime of use.