We have an area on the floor that was cold under our feet in winter, and it happens to be just over a basement entrance. The 4'x6' region above the basement entrance has vinyl siding under it (the siding is horizontal, covering the underside of the first floor in the overhang just outside the basement door).
How do I insulate it? Inserting a sheet of the pink styrofoam stuff would require taking all the siding strips off. Is this easy, or there an easier way?
Of course, maybe the problem is air infiltration...
Many thanks for any suggestions. I am not an expert on vinyl siding; I do have a tool for locking/unlocking but I've never actually used it.