OK, First time poster but a long time Jayco owner and forum reader. Now onto my Jayco a 17.55-3 Sterling outback, I had to replace the flooring but on demolishing the shower room I cracked the plastic wall. I have been trying to search for a replacement but so far I am having no luck. I was looking at High Pressure Melamine board but due to covid finding supply hard to get. I was thinking about trying Mr wet wall but I am hoping the wisdom in here could help out with ideas.