Hi All. We would like to refit a downstairs shower room to a wetroom. The old shower tray is over 100mm high from memory. The waste is just over the DPC from the pic. Is there any way a new waste pipe system can be set lower to allow for a wetroom or even a lower shower tray to be fitted without making the DPC unsafe? I'm sorry if this is a silly question but just trying to look at all options! Have had advice from one fitter that it's simply not possible and options are fitting a stud wall inside and somehow creating new waste system or screeding entire room to raise floor. Appreciate any advice thanks!