Last year I bought a new 5er, 2019 model. There were two on the lot, both same make, model, manufacture, etc. The only difference was one had darker furniture and the other lighter (cream) colored furniture. The wife liked the darker and that's the unit we bought. While I had the unit in to get the awning controller replaced under warranty, I noticed the other unit was in for repairs. It had several spots that delaminated. Big spots that delaminated. It happens. I asked the head service tech about it. He told me the way to tell the difference is to push on it. If it feels like it wants to stick, it delaminated. If it feels soft, its water damage. He said the number one maintenance item is maintaining the roof and window seals. Keep the water out and the rest is easy stuff.