Hey all, I have a 1930's-40's cape cod with a dormer addition on the rear. Approx 1300 sq/ft. The addition is aluminum siding over wood frame. Im guess the addition was put on 10-15 yrs ago, Maybe later. The original portion of the house is solid brick with backup block and plaster finish. There is only a 1/2" air gap between the plaster and exterior brick so no room for blow in insul. Im trying to insulate the best I can with what I have to work with. What im thinking of is stripping the alum siding, putting insulation board over the whole house, moisture barrier, the insulated vinyl siding over everything, brick included. Do you all think it would make much of a difference to get the insulated vinyl over regular vinyl? Im sure the cost im substantially higher so I want to be sure it is going to be worth it. Im just looking for the best possible way to insulate this house without getting into MAJOR reconstruction. Any suggestions?