crosspost from flooring-for unheated sunporch over heated bsmt?
I posted this in Flooring, but realized that it might be more appropriate here.
I am adding an unheated "sunporch" with vinyl windows that are easily converted to a screened porch (easily removeable windows). This will be over a heated basement area. I don't envision water getting on the floor in this design. Would porcelain tile flooring be the way to go and would and special membranes need to be laid underneath to ensure stability? I was also thinking of a floating luxury vinyl as I have read that there has been some success with that in unheated vacation homes. Any suggestions or experience?