I used to be the repair/modification guy at a major Brisbane new caravan yard (Franklin)..Liked the work but it could'nt support my little family..Since then I have bought & fitted out an aged,but solid 20' tandem Carapark van. Insulated the walls/roof with StyroFoam & did walls with white Melinite. My mobile multi-media/sound lounge.Drak outside.Magic inside.