Black vapor barrier uner the slide out floors
What is this stuff and where do I get it? I am replacing the floor in my bedroom slide due to rot. I plan on wrapping Tyvek and the stuff that is on there. I keep seeing it called polymax or Darco but I cannot find a place to order it from. I'm guessing that it is called something else. Thanks for your assistance. I can usually find whatever I need on the good ole net but I am having troubles with this stuff.
2011 F250 FX4 6.7L PSD
2012 Chaparral Coachman 325MKS