fish paper (phenolic soaked paper or cardboard insulating material) is going to scorch a little next to lamp sockets. it goes back to the early days of commercial electricity, and is too "ancient" for the hardware stores and home centers.
probably worst next to candelabra sockets because that 40 or 60 watt filament dissipates heat through a smaller base and through less surface area of glass.
foiled surface fish would reflect the heat back, but foil is a good conductor, and you need to be sure it won't short the socket or wires.
the stuff has limited use these days because of perceived or real flammability issues, and because it can hold water. what I'd personally do in this situation where fish paper is burning is I'd use the foil-faced, and scan Da Web for some thin teflon sheeting to put between the fish and the socket. no more conductor issues, better heat resistance.
if you have pet birds, however, do NOT use teflon in your home. moderate heat, even mild cooking heat, liberates a little fluorine-based fume into the air, enough to kill birds, but not much else.
sig: if this is a new economy, how come they still want my old-fashioned money?
