[Jimmer]

Patrick,

If I were doing it, I would tile a section of the room as you suggest and then move the piano onto the finished tile using three strips of 1/2" plywood to roll easier and spread the load a bit while moving.

I would not tile all around it first, just because of past bad experiences with working in towards a center. I have better success tiling across a room.

Assuming you are using the proper size knotched trowel and you are taking care to set the tile without voids under them... there should not be a problem with the weight of the piano.

Good luck, Jim

'Just a handyman trying to help'