Thoughts on this? I have a client that wants to do this over 3/4" CDX on a covered deck. I've never done this and wanted to know what you guys think about it and if you have any specific recommendations or product recommendations on this. I really can't afford to have this fall apart in a few years down the road, esp as this owner is family and I will hear about it forever if it becomes problematic. They have friends that have done it with mixed results from the same installer. Let me know what you think.