My wife had the same complaint when we camped at gordale The cold of the outside soak right through the steel and when you roll over and touch your face its a cold shock Im using this stuff on the inside of the bus http://www.qpaints.co.uk/u-pol-raptor-liner-black-tintable-4l.html The reson is not only do we need somthing between the bare steel and our exposed extremities when were camping The back of the bus also needs to carry dog/ferret boxes from time to time and during certain months the bus will be loaded with logs Vinyl does come in some pretty colours and effect but wouldent last five mins when the bus is full of logs
Im being selective with its use The ceiling will be carpet as it wont get as much hammering and carpet will stop condensation from the overnight breathing in an insulated box from dripping on the bedding
Just for info the thermowrap stuff actually reduces condensation we found it really good no drips or the usual wet cieling like usual
Finally got a new computer! so..... heres a few pics of the new interior I fitted complete with surfboards! swing out cooker micro cooler 240v hook up fed from the engine bay got a few more ideas to bring to life but really pleased over all!