December 8, 2015
I suggest you determine your local code requirements pertaining to recommended R-value and vapor barrier requirements for your region. Typically in an unconditioned crawlspace, you would place a 4 or 6 mil poly vapor barrier on the ground, allowing it to go up the wall approximately 8" - 12". You have allot of moisture that comes out of the ground, so this will assist with blocking much of this from entering the crawlspace. Also, we typically recommend filling the cavity under the subfloor of the room above. If the room above is heated, you would typically use a Kraft Faced insulation, with the Kraft Facing in direct contact with the subfloor of the room above. I would suggest you air seal the cavities along the rim joist, and place a piece of insulation in that cavity as well. You can find some useful installation videos at the following site: http://insulation.owenscorning.com/homeowners/customer-support/installation-videos/ 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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