Much has been said about the R-value
degradation of fiberglass insulation when
it is subjected to moisture. I myself addressed
the subject in the October 1985 issue of
NEB, after reading that fiberglass loses 50
percent of its R-value when it gets wet.
That comment got my dander up because
it was made totally out of context and was
completely misleading. I challenged the
author about his assertions, and he replied
that he made the statement only to make
people aware of the problems of moisture
in insulation (a totally irresponsible
approach, as far as I am concerned).
Now, prompted by an NEB reader who
asked me to follow up my October article
with a more