Hello, all. First post here. We are considering the purchase of a 170-year-old home in Maine and I am trying to think through some winter strategies for energy savings. There's a lot of info out there about the obvious (efficient boiler, weather stripping doors/windows, etc.) but I'm not finding much about what seems to be a potentially effective approach: drastically cutting back on living space during winter by closing off rooms and "moving into" two or three first floor rooms, e.g. the kitchen, a bedroom, and perhaps a single living area. These "winter quarters" would be insulated from the rest of the house and would be the only areas to be heated.
Seems to me interior walls/ceilings leading to unused rooms could be insulated, and radiator plumbing could be zoned in a way that would allow for shutting off flow to radiators of unused rooms. Is this crazy? Am I missing something? Seems like adding a layer of rigid foam + another layer of drywall (and adjusting casing/trim as needed) for affected interior walls would work and laying down some kind of seasonal insulating "blanket" of some kind on the upstairs floors would help create this protected area.
Would love to hear thoughts/comments. Thanks.