Hello Davie,
Thanks for your reply, I haven’t got the new green book yet, although I doubt it has changed at all, Or maybe it has with if you have a chance to check it could you let me know?
Spoken to the customer again today, and we have come up with a plan, which I feel is ok, but still keen to see what others think with the following additional info.
Customer has checked the washing machine again and confirmed it is IPX4.
I am going to change the socket outlet for an IP66 SFCU.
Customer is going to make/fit a door with lock to the alcove, hinged on the bath side.
The door will incorporate a small louvered type vent at near the bottom to aid air flow, but maintain a reasonable barrier, and theoretically the former alcove (soon to be cupboard) can be considered as outside zone 2.
The bathroom is forced ventilated, so should deal with the condensation.
It is only a washing machine and not a tumble dryer also, so heat build up should not be a problem, after all it will occupy a space which provides much more space around the appliance than most built-in or free standing under cabinet units.
Any more views before I go with this.......or not!?