After weeks of googling it turns out there is no definitive “this is how you insulate your van, for winter use and to stop it rotting” answer..
This is my plan for my lovely new (to me) Transit…
35mm thick white dacron/polyester stuck to panels with high temp. adhesive (doubled up where space allows). Then I’m going to tape continuous sheets of foil covered bubble wrap over the top, this should also act as a vapour barrier.
I’m not convinced that glueing the bubble wrap straight to the metal would be as effective, as I’ve heard it needs an air gap to work properly?
What I need is someone to tell to stop worrying about it all and just get on with it! 😉
I used a combination of thing on my last van, including conventional loft insulation………after a few years it failed it’s MOT due to rot…