Mark P Posted June 30, 2016 Report Posted June 30, 2016 It is not dirty, this is its color. Click to Enlarge 48.09 KB
Mark P Posted June 30, 2016 Author Report Posted June 30, 2016 I think it is rock wool. I just needed a 2nd cup of coffee to jog my memory.
Les Posted June 30, 2016 Report Posted June 30, 2016 It is rock wool. We also call if mineral wool. I learned years ago that there are no exact terms for insulation.
Jim Katen Posted July 1, 2016 Report Posted July 1, 2016 Isn't mineral wool the generic term and Rockwool a brand name?
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