In article ,
says...

snip comments re. fibreglass


It can cause skin irritation when disturbed or handled, the other
symptoms are mostly psychosomatic.


Whilst I generally have regard to your latterly infrequent posts,
this particular point I disagree with, on a personal front.

Unfortunately, my lungs have suffered over the years from copious
amounts of farm dust inhalation, followed by a reasonable amount of
industrial fume inhalation, all of which was preceded by bronchitis at
age 18. I have to say though that I have not yet reached age 50.

For the last twelve years or so my job has necessitated the
occasional couple of hours in various glassfibre insulated loft spaces.
If I don't have a mask handy, then usually within a few minutes I am
reduced to a helpless coughing wreck. the coughing often lasts to some
degree for an hour or two after the exposure. I have also noticed that
the earlier green, more abrasive glassfibre is much more dusty, and
causes more or stronger symptoms.

Rockwool seems not to be a problem...
--
Regards,

Will.