We covered both of the big players. Mainly, Hardi. We were also given a handout of the latest changes in the manual, and a good part of the discussion was focused on awareness of the periodic changes. To be fair, the instructor was not who put the product in the water. That was done by another inspector. Raymond, I'm sure, will fill in the blanks, or correct me. I've seen it delaminated after it was installed too close to the ground on a pool house that was less than five years old. It was not in contact with the ground. There was a concrete sidewalk below it.