I am planning to use mineral wool batting to insulate a corner of my attic.
I notice that one of the big-box building centres now sells a Johns-Manville product that is "formaldehyde free".
I wonder if anyone can offer some advice on whether this is a good product to buy. Also, is there any huge difference between the Johns-Manville insulation batting and the ones sold by Roxul?
Thanks,
Ted Fairhurst Toronto