There was rather a lot of it.
In fact I've never seen quite so much dust in my life ...
Those are, believe it or not, red terracotta tiles. Drastic measures were necessary to clean the 50 square metre area:
Now please don't be alarmed by this picture. I don't always look that frightening, honest. I'm just doing my Teletubby impersonation.
By the end of the (very long) day there was only one word that either of us could utter: