Originally Posted by robp
Anyway, although this is an old thread, I'd like to ask about results of protection. Not understanding much about PVC, I allowed some UV degradation. I can usually clean it up but the Orangy Brown stain comes back after a short while. Would any of the protectors stop this from happening, or is that it with the PVC? If so, then maybe some of the flexible paint will be necessary.
Orange/brown = UV degradation...the PVC is starting to break down on a chemical level.
Ultimately, the only real solution is to replace the material. Most people just buy a new boat. Patching over it is an okay solution as well.