My 1840-ish house's formal front door currently has no storm door, as the storm door that was there was nearly disintegrated from deterioration that pre-dated me. This entry is rarely used, as there's another door via the 'mud room' to the kitchen. The Christmas Tree goes in and out that door, as do (rarely) large items of furniture. I have thought of putting on some sort of replacement storm door, but am also thinking of situations I have seen where people have some sort of decent looking "planked over" winter cover over a seldom-used door- sometimes with beadboard- for such generally- unused doors for the winter. Advantage of such a "cover" would be that I could put some more significant insulation (polyiso board) in between. Maybe ? also cheaper than a decent grade storm door that would match the house. But of course it has to be able to be opened or "removable" in case of a need for sudden unplanned exit/ emergency. Anyone done one of these "non-storm-door covers" and have any suggestions on what to try or avoid? Thanks!