So I have had UFH installed, and unfortunately because of the layout of the room, the pipes go into a store cupboard where the manifold is. The thing is, I want to use the rest of this store cupboard to store foodstuff, so I don't want it to get hot in there. It is only a small area, about 1m x 1.5m. Can I use some kind of heat reflecting material to keep the heat out of this space?