Hello!
I saw your post on the Vinyl flooring staining and I have been seeing a similar sort of stain in my vinyl flooring. I was curious of yours was similar to mine and if you ever got to the bottom of what it was? (Pics in the below link) https://www.airforums.com/forums/f46...on-220899.html
I am trying to determine whether it is mold from something slowly leaking from the bathroom or if it is from the rubber mats as you eluded to.
Disclaimer:
This website is not affiliated with or endorsed by the Airstream, Inc. or any of its affiliates. Airstream is a registered trademark of Airstream Inc. All rights reserved. Airstream trademark used under license to Social Knowledge LLC.