Does anyone see a problem with installing 2 inch xps on inside of basement walls and then mounting 5/8 inch plywood over it screwing into block wall with long tap cons . Basement will not be heated or cooled but will run dehumidifier . Just trying to keep walkout basement warmer in winter and only use in for storage . Basement does not leak but dehumidifier extracts about a gallon of water daily . Basement ceiling and floor will remain uninsulated .