Hello again my fellow van dwellers.......I had some insight and wanted to share and get opinions about it.Now.....to me insulating without some type of vapor barrier is defeating the purpose of insulating.I agree that using poly is only asking for trouble because of moisture.....however.....house wrap....as far as I know....has the capabilities of allowing the exterior of a home the ability to breath so to speak but at the same time stops drafts.....has anyone else thought of this or tried it.....opinions....I might be over looking something.....