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
