How do you put up wainscoting if you cant SCREW IT in?

If you can't screw in the wainscoting, you can use adhesive wall paneling glue or construction adhesive to secure the boards to the wall. Ensure the wall surface is clean and dry before applying the adhesive. Use finishing nails or brad nails to hold the panels in place temporarily until the adhesive sets, if necessary. Finally, fill any gaps or nail holes with caulk or wood filler for a polished look.