My question is around the use of foamboards in finished basements to serve as a vapor retarder and to reduce condensation.
I've already fastened foam boards against all the concrete walls, taping the seams, and also cutting pieces for the sill boxes.
But what do you do on the sides of the house that don't have sill boxes (see picture below)? Currently the foam boards end as high as I could go, but its impossible to get behind that joist. There is actually fiberglass stuffed behind it but it would be hard to pull out. Should I put foam boards against the face of that last visible joist? Caulk the gaps? Any help would be appreciated.