PSR-VR with VersiTab is 1 /4″ fiberglass with a white polypropylene scrim reinforced vapor retarder on one side and a foil film on the other side
RFSK with VersiTab 1 /4″ fiberglass with a silver (aluminum) scrim reinforced vapor retarder on one side and a foil film on the other side
VersiTab has a 2″ tab on one side and a 4″ tab on the other side of the roll to allow the insulation side laps to be folded and stapled or overlapped and taped