I have pretty much decided to put up a parkland plastic screen after reading the numerous posts about them. My question is; what are everyone using to mount the plastic sheet. Can it go directly on the wall and be trimmed? I was thinking about 1/4" plywood and contact cement until I read a post saying the wood might warp. I do not want anything to thick as I would like it to look flat on the wall. Is anyone using a flat ridgid material that would work. I have a painted textured wall at the moment. Any ideas or personal experiences that could be shared would be greatly appreciated.