I already knew that Ytongg is a brand name, but I had no idea what aerated concrete was; I only knew the term gas concrete. You never stop learning! :)
My parents built their extension back then with gas concrete (Ytongg stones ;)), so I know their advantages and good workability.
However, I was so set on building the pedestal out of wood that I never even considered masonry with Ytongg. :O
So thanks again for the tip!
Our one pedestal in the bathroom is also made of that and tiled.
One more question about that: Is your pedestal tiled on the side with wall tiles or also on top with floor tiles (i.e., walkable)?