Lowering a screeded floor with underfloor heating

[PhilipLD]

I know nothing about building. At all.

Our new orangery floor with underfloor heating was screeded a month ago. The lift and slide doors were put in today and fit flush with the screed. But the vinyl tiles are going to add 5mm to the height of the floor leaving a trip hazard at all the doors and exposing the edge to the elements in the summer when the doors are open. Any thoughts on what could be done to correct this? Thanks

 

[Notch7]

Getting floor heights correct for a flush cill is really difficult.

Unfortunately its almost impossible to adjust screed once down.

Can the door frame not go up by 5mm? -or is it tight against the lintel?

 

[PhilipLD]

Unfortunately not. There is zero tolerance