I am located in Hamilton, Ontario. My current "cellar" consists of 2 72 bottle Ikea wine racks against a below grade outside basement wall with room for case storage right next to them. Ambient temperature year round is quite stable and stays within a couple degrees of 68F. Winter humidity is kept well up in the human comfort zone by use of a free standing home humidifier.
My problem? I am going to build a "real" wine "cellar/storage" area in the basement that will be both functional and decorative. Given that I BUY only Canadian, primarily Ontario, wines, some of which might age 6 - 8 years at most and with the increasing popularity of screw cap closures do I really need to enclose and insulate it and buy a unit to more closely regulate temperature and humidity?
Informed opinions and advice solicited. TIA.