He hasn't started? Good. Be sure to describe it in as much detail as I can remember (hey, proof you didn't make it up, I can't describe it from memory well :lol:).

If your dad isn't too home repairy, then definately not a job for him. This will take weeks if not over a month, depending on how much of the bathroom needs re-doing. Getting everything all smoothly done in the concreting and waterproofing, fitting all the tiles to the room, keeping them up and even between the... um... gluing? of the tiles to walls and floor and the grouting of the whole thing. Big and fiddly.