i called the dealer where i bought it used 2 yrs ago, they said it might be the temp extremes. i've ck'd the roof, i gently clean it annually, and find no leaks. However, the caulking is horrible and has weather cracks, maybe the whole froof needs recaulked. I sliced a wrinkle, no visible sign of water damage, and no water staining. I even pulled away the "moulding" covering the raingutter screws, cleaned it good, no sign of water penetrating through the screws. I just am very disappointed in the caulking job, we really like this RV. I'm gonna call FF Monday- want to email them a photo of wrinkles, if it is a leak, i need to remidy it promptly.
The ceiling wrinkles are everywhere but over the rear wall and over the slider. Was you wrikle accompanied with any water stains or wall damage?