Revisions log for Answer #2593
This is the answer to the question How to correct the difference in floor level between the rooms?
Revision 1
If ceramic tile is to be used as flooring, the greater thickness of the installation should really be considered at the screed stage.
In other rooms (which have become lower due to other flooring), the screed is troweled in any case in the standard way before the flooring is laid.
The 5-6 mm you mention are not exorbitant and a good transition profile will technically overcome them without any problems, but the rule of thumb is that from 4 mm of height offset onwards there is a risk of tripping.
However, please note (to reassure yourself) that surfaces that have been poured or troweled are never "rock solid"!!!
Thus, if the lower room is filled in as a ramp about 50 cm long in front of the door, it would technically be perfectly fine.
If the upper floor pavement is changed in the future and the "ramp" proves uncomfortable, the "ledge" will simply be sanded down and thus brought into compliance with the required transition height.
This procedure complies with the rules – and therefore really isn't a serious problem for the decking!