I'm having some work done to my wetroom shower. I had an Impey aquadeck initially fitted with overlaid tiles with incorrect falls to the drain so I have to have a new layer of tiles fitted over the existing to correct the gradients (within a granite boundary). I have underfloor heating so don't want to rip the whole lot up. I need to lift the drain level so am looking for a new drain plate with supporting frame only to match the Impey one in size. It is a 117mm square plate. Can anyone suggest what I can use? 
