Roger learns about barrier island ecology, while the Bay Head job is in limbo waiting for FEMA. Breakaway walls and flood vents are installed in Point Pleasant, and Rita's modular cape is steaming along. Alex Burke shows Roger which plants and trees survived Sandy's salty onslaught, which didn't, and how to landscape for the future on a barrier island. In the second half of the hour, on ASK THIS OLD HOUSE, Tommy and Kevin replace a leaky skylight. Richard repairs a noisy toilet. And the guys ask, "What is it?"