You can insulate second-floor rim joists following the same steps shown here if you happen to tear out a ceiling during remodeling. Rigid foam is the best insulation for rim joists. We chose 2-in.- ...
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How To Safely Drill Through Floor Joists
holes anywhere in the web area of engineered I-joists, except within 6 in. of walls and rim joists. The post How To Safely ...