There is only one way to pack a mirror for any sort of transport.
One has to make a special box to house it, a few millimeters of the exact mirror size out of a sturdy timber construction.
In that box put in a small piece of wood, say the size of a match stick, in each corner, and place the mirror up side down on those match sticks, do not wrap, and screw the lid down with some card board in between the lid and the mirror.
you do not wrap mirrors.
Leon
