My brother has a house in zone 6b, with a unheated basement, that is usually pretty damp.

He began installing fiberglass insulation between the floor joists in the basement. He put the kraft faced side down (facing the basement), since he thought that would prevent any condensation from developing directly under the floor. I told him to wait until i asked here.

But, this is wrong, right? If hes set on using fiberglass insulation, should he remove the kraft facing, or turn it around so the kraft facing faces the heat, or leave it as is?