What is the best way to insulate concrete basement floor and keep it waterproof?
I am remodeling in North Georgia a lake cabin by adding a second level using a steelframe prefab that has posts in a few locations already bolted down into foundation.
Existing slab is not insulated and has floor drains in kitchen, mud room, and bathroom that is functional and will be reused.
I want to insulate the top of concrete floor with 15ml plastic + 1″ of structural foam+??? something+ tiles in kitchen, mud room and bathroom and other water proof option for living space.
I have seen the plywood options for the wood floors, but
1: what is the option for the subfloors when floors would be constantly wet?
the slab gets very cold, and
condensation in summer as doors are opening all the time.
2: What can I transition wood to tile with in an open floor plan on top of the foam board?
3: Do I build the weight bearing walls on top of the structural foam or directly to the concrete? I am using 2×6 for internal weight bearing. Counter intuitive for me.
Your experience and feedback is greatly appreciated.
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