Our new stamped concrete deck is about to be poured this week. The contractor used the Stegmeir forms, but did not use the tile guard (the plastic strips between the form and the tile). He put tape across the seam and contends that this takes the place of the guard, and the deck will not touch the tile. I am worried that water will get behind the tile and cause an issue unless this guard is used or the joint gets caulked. Is a guarantee that the deck floats above the tile enough to prevent the tiles from falling off in the future? He says to call him next year if there is a problem but I am not sure that is enough for me if this strip should be used. He has been in business for 29 years and has no complaints and good recommendations. Am I crazy to doubt him?