Generator insulator

[transit360]

I'm building a generator tray to hold my small 5kw generator. This
generator tray is to the right of the engine in my diesel pusher
Bluebird. The exhaust pipe is routed about 4-6" from the underside of
this generator tray.
I need advice on what I can get to build some insulative sheilding
so that my generator doesn't get cooked by my diesel engine or the
exhaust pipe. I can build the framework, but I need some material
that'll insulate and reflect heat. The best I can come up with is
aluminum flashing. Suggestions?

Steve
2 '98 Bluebird QBRE Partybuses