Thanks Carl-

Let me clarify:

1. Current entry to pool is three steps down to shallow end.
2. These 3 steps will be replaced with a sun ledge
3. What I am describing is how contractor has started to create the sun ledge
4. My expectation was they would form up the sun ledge and reinforce with rebar and then fill the area with concrete, remove the forms before shaping and applying bonding agent and Diamond Brite
5. Alternatively the have built a plywood and 2x4 frame that they are surrounding with rebar and connecting to existing pool walls to form the sun ledge-the void under this wood frame they are describing they are leaving empty. They describe that they are planning to leave the wood embedded in concrete(with nothing on the underside as this will be an empty void under the ledge.


My concern is that the ledge will be supported by wood 2x4 and plywood, with rebar over the top/embedded in concrete. And, won't the wood both flex and rot from the underside over time and eventually crack the concrete and Diamond Brite?