Purchased a 2018 Jayco Jay Feather 23BHM in September. I noticed a section of the molding on the slide had either slid down or completely come out. When I got up on a ladder to further inspect I observed bubbles all over the trailer roof. I have owned two previous trailers - one of over 12 years and NEVER EVER had any bubbles on the roof. The other trailers were not Jayco.
I took it to the dealer (Blue Dog RV) and the tech went up on the roof and took pictures. It is worse than I thought !! Coming up on sections all over the roof. I was told by the shop manager this was NOT normal (they sell Jayco brand trailers) and we would be getting a new roof once Jayco was contacted. A few days later shop calls us back and says Jayco claims all of these bubbles are completely normal.
I explained the fact I had owned two trailers prior and have NEVER seen this before. The Jayco Rep kept telling me it was normal and they would "note my file" ..whatever THAT means. He hung up on me twice when I requested to speak with a supervisor. It then took several days for supervisor to contact me and he said the same thing...my file would be noted.
Blue Dog shop forman won't return my calls....I have talked to a few other RV shops and they tell me it is NOT NORMAL.
I heard others say similar things on the board from time to time. One thing to note, the membrane is NOT glued down, so if it was baggy when it was put on, as you drive it moves around a little due to the wind and makes those wavy bubbles you can see.
I would make sure it is noted in the dealer file, and monitor it for the next year or two while it is still in warranty. It is more cosmetic than anything, but it still is not normal.
Don't know if this makes you feel any better but mine is a 2010 and I have a few bubbles around the top edge and near the frig vent with no problems to date. There about the size on an iPhone and one is longer.