If you haven't seen our online forums yet, point your browser to www.jlconline.com and click on Forums. You're welcome to browse — or, better yet, join in the conversation yourself. Here are excerpts from recent message threads. — The Editors PT Plywood Subflooring • Posted by Steve: I have a client who insists on using PT ply as a subfloor over PT sleepers on a basement slab. Any suggestions to help talk them out of this? ° Followup posted by Kevin: I would at least have them sign a waiver stating that you do not recommend this and releasing you from any future harmful health effects. ° Followup posted by Keith: This is as bad as