I recently saw the YOUTUBE video of "How it's made".
The video shows an Airstream in production.
Before the insulation was applied the walls were coated with an orange sealant. What is that stuff?
I have a 1971 Airstream Ambassador 29ft.
I have removed all the interior mechanicals, appliances, furniture...etc.
I have also removed the inner walls and insulation.
Yes, rear end sag and rotten flooring....
I am at the point where I can start insulating, however Id like to apply
some of that sealant....What the heck is recommended?