September 28, 2015
First I suggest determining your local code requirements for recommended R-value and vapor barrier requirements for your region. Once you determine what is needed, I suggest you caulk and seal the perimeter of each of the small cavities along the Rim Joist. Also I recommend caulking and sealing any cracks, leaks and penetrations on the foundation wall prior to insulating. Assuming you have an Unconditioned Crawlspace, Owens Corning has an R-19 UNFaced insulation that can be used to insulate along the Rim Joist cavities, and I would recommend you fill the ceiling/ floor joists cavities with a Kraft Faced insulation, with the Facing up tight against the subfloor above. You can determine the R-value depending upon the dimensions of the Joists. You can finish with a minimum 6 mil poly vapor barrier on the ground. If you are unfamiliar with this type of application, I recommend contacting a local contractor for some assistance. If you have any further questions, please feel free to contact a representative at your local Home Depot ProDesk and they will be happy to assist you. Or you can call 1-800-HOME-DEPOT (1-800-466-3337) and a someone will be happy to assist you as well. Thank you for your inquiry!
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