In our new home, in the back of our closet the previous home owner had put that flimsy thin wood paneling as a wall in between the back of the closet and where the triangular part of the roof is about 5ft tall.
So behind that is a finished storage crawlspace area with insulation, plastic vapor barrier and the OSB board. The OSB boards do not meet flush to each other where there are corners, except the floor. It looks nice and is well done.
However, in the winter our closet is cold, like you can feel the air coming out when you go to grab a shirt. The summer (now) it's hot upstairs, more so in the closet. My question is, what is the best way to go about insulating this better?
I was going to go buy some insulation sheets, just FOAMULAR sheets, and install them on the other side of the closet "wall". I know that you shouldn't put more insulation over vapor barrier. Would this suffice in keeping weather temp out or is there a better way to go about this? Hopefully my description is good enough to picture.