How does rot occur?
From Timm Doolen If there is a possibility that air can get through the plastic coating of your disc, then the laserdisc can rot because of oxidation of the data layer. A deep scratch, an original manufacturing defect, or the glue heating and expanding (that’s why you should store them in a cool, dry place) can let in oxygen. There’s dozens of other possibilities. Because of the name “laser rot”, a lot of people think they will be able to see the problems on the outside of the disc, but this is almost never the case – you have to watch the movie. Only once have I seen a disc that showed external signs of laser rot, and I think that was a manufacturer’s defect of the glue getting inside the plastic. It looked like someone had spilled coffee and it had dried out. I touched it, and all I felt was the plastic coating, so it was definitely inside the plastic, touching the metal. There were dozens of skips on the disc and I of course returned it for a refund. Newcomers to the laserdisc forma
