Shower trays and underfloor heating

[Dugsy]

Currently installing insulation for upstairs underfloor heating (insulation placed directly onto slab and upright pieces against the walls). I am wondering what is the best way to do the bathroom under the shower tray.
Do I insulate right into the corner (including upright pieces against the walls) or do I insulate just up to the shower tray and get screed placed directly onto the slab in the area under the shower tray. What concerns me about the first option is placing the inner edges of the shower tray directly onto the upright insulation, which will not offer the tray very strong support.
Anybody advice appreciated?

 

[DavyJones]

Not normal to put UFH under showertrays. Also a good idea to avoid toilet area, toilets have to be screwed down to floor.

 

[Dugsy]

Thanks for the reply. What I am really wondering about is how to screed and insulate under the shower tray. As you point out I will not be putting piping in the areas you identified.