Thermal foil insulation, which method should the foil obverse? I have in recent times purchased Thermal foil insulation for the loft,...

I have in recent times purchased Thermal foil insulation for the loft, but the instructions are not great. I have have a loft conversion, but I want to insulate the storage area surrounded by the front of the roof.I am going to use this on the beams that seperate the room and the store, but should the foil frontage the plasterboard, or the store area?
By the course, the insulation comes on a roll, with foil on one side and bubble wrap on the other.
Ever be scalped by a landscaper?
Answers:    The foil should frontage the warm side of the wall or floor, otherwise it will trap condensation.
Fixing a cabinet?
foil face the heat source you are trying to protect.