Looking to install wood flooring in Florida Room, which is raised off ground level with a plywood floor over the joists. I am also looking to install floor heating, and I understand floor heating is only efficient if one has a concrete slab to absorb/radiate the heat. Therefore, is it possible to pour concrete over plywood and what preparation/checks are needed? Also, how long will it take for the concrete to dry before I can install the wood flooring (will likely use glue method)?

Many thanks