In our survey of deck builders, we learned that 98% of 8-10 year-old decks have splitting, rotting and decay. For the $8,000 to $10,000 price of the average deck*, wouldn’t it be wise to spend a few extra dollars to protect the life of your deck? Trex Protect acts as a moisture barrier between wood and galvanized metal, helping screws hold longer and stronger so you get the full life out of your deck.