I don't think I've come across macerated paper, but I've lost count of the number of times I've seen lights covered/totally enclosed with fiberglass insulation.

Another point is that in some cases cables have been installed in free air ("clipped direct" is the IEE term, although they often aren't clipped!) on a somewhat marginal rating, then the insulation installers cover them up and the result is that those cables are then operating in excess of their rating.

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We live on the 2nd floor (1st for most Europeans),
Does that mean that you follow U.S.-style numbering in Austria, or were you just expressing it that way for our American friends?