Sounds like you've got a mammoth challenge here.
My conv' is slow to non existent due to work commitments (meh) so I don't feel authorised to comment on or advise on how to tackle your probs. I bought a pack of silver bubble wrap from screw fix and spray glued it wherever I could to the inside of the panels all over the van.(on the bare metal) Even the cab. I also poked about 3 rolls of glass fibre insulation into all the reinforcement channels from front to back (very laborious) but worth it. Only the windows condensate but not so much if I leave them open slightly. A pair of side window wind sheilds, apart from looking boy racer ish prevents the rain coming in and disguises the fact that the windows are open slightly.
There's a few good pointers in Mikes book might help your other queries.
cheers.
My conv' is slow to non existent due to work commitments (meh) so I don't feel authorised to comment on or advise on how to tackle your probs. I bought a pack of silver bubble wrap from screw fix and spray glued it wherever I could to the inside of the panels all over the van.(on the bare metal) Even the cab. I also poked about 3 rolls of glass fibre insulation into all the reinforcement channels from front to back (very laborious) but worth it. Only the windows condensate but not so much if I leave them open slightly. A pair of side window wind sheilds, apart from looking boy racer ish prevents the rain coming in and disguises the fact that the windows are open slightly.
There's a few good pointers in Mikes book might help your other queries.
cheers.