I was just told the same thing by the guys pouring my deck. It is formed and ready to go later this week or early next week after bonding inspection. The decking guy told me next year I will have to caulk. He said if I was handy I could do the job myself and save $500. Not sure what the caulk would cost, It is not just regular caulk, it is something special. He did tell me if I do it myself to be sure I tape the deck and the coping real good or I will have a big mess. I might just pay the PB in a year so I don't make a big mess. I was told the reason for waiting a year is for the deck to settle. Hope this helps.
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