Ouch, Very sorry to hear of your difficulties…Over the years I’ve toured 5 or 6 truck camper factories and in each case glue is sprayed over the entire luan panel (or in some cases Azdel, a composite panel) after which the filon is rolled atop and the panel is typically pinch rolled and placed in a vacuum holding bag for several hours as a vacuum pump removes all the air…It’s hard to imagine filon laying down in a uniform fashion otherwise…A seam leak can definitely cause delamination to occur. For redundancy, I applied Eternabond tape atop the factory caulked seam, then caulked around the Eternabond’s edges…Makes me kinda wonder if this might be covered by home owners or camper insurance?
Good Luck to You Sir,
Phil
