Hey, my basement rim joist has ancient insulation that needs to be trashed. I am very interested in utilizing Rockwool as I am just some DIY person and have never done this before, seems easy to work with. I have attached a picture of what I'm dealing with and my basement isn't that large so probably one or two packs of the stuff would be good. Wondering if in addition to sealing with spray foam or caulk behind the insulation if I can just put the rock wool in and be done or if I need to seal everything up with the plastic bag stuff afterwards or if I need to put the roxul comfort board stuff behind the comfortbatt stuff? A bit confused which one of their products or combo of products I should use but would like to keep this as simple as possible. Anyone work with this stuff before?
wyclef
Joined
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52,319 Posts
Being a naildriver, my house is probably the last to get the best of everything 
A year or so ago I noticed my rim joists in the basement were devoid of any insulation. That meant all I had to keep cold air out was the rim joist (wood) itself. Dumb.
I insulated it with Roxul and could not believe the difference in temperature the next winter. I highly recommend it.
A year or so ago I noticed my rim joists in the basement were devoid of any insulation. That meant all I had to keep cold air out was the rim joist (wood) itself. Dumb.I insulated it with Roxul and could not believe the difference in temperature the next winter. I highly recommend it.
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