I wish I had pics right now...I'll look in my phone after this post, but I've got very similar issues with my 2012 Scamp
. Lines/cracks look a lot like yours and they don't leak. Common stress point is the big hole there that makes door opening. Should say a weak area. Not sure exactly cause as my axle
is great and perfect floor too. I can tell you my trailer was in an accident with prior owner. So u always assumed mine were due to tweaking and flexing during that event.
Also I noticed when I bought the trailer from the PO that he slammed the door rather than close it properly(the way I read about by doing my homework before even owning a scamp!). I shuddered and cringed as he did it several times, so u also postulated that his owning the trailer a year and constantly closing the door that way could also be the problem.
All I did was put captain
tolleys creeping crack cure in them and called it a day. I'd love to get all properly repaired some day from a great local gelcoat man, but alas, no moolah.
If I can find pics of mine maybe it will make you feel better!
Sent from my iPhone using Fiberglass RV