cabaiguan juan
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So I'm smoking a DC Lancero and doing a search for how to install insulation in the exposed crawlspace of an addition which was put on the house i bought. The previous owner had a office built onto the house, but did not insulate below the addition (inbetween the floor joists under the addition). My thought was to install batt insulation with a paper vabor barrier backing with the paper backing on the down/exposed side (stapled to the bottom of the joists) and then screwing PT plywood to the bottom of the joists as protection. The thought being that the moisture would come from below the crawl space upward to the bottom side of the addition. The paper would prevent the moisture from entering the addition from below. As i mentioned, the crawl space is exposed to the outside. However, in doing a search on the many DIY websites, most say that the insulation should face the inside to prevent moisture from inside the room to coming in contact with the insulation. I'm not sure that this applies in this case. I also read that you dont want to sandwich the insulation on both sides with vabor barrier since it would trap moisture inside the insulation which would degade the effectiveness of the insulation and potentually cause mold issues. Has any one run into this sort of situation on their own or have any idea which way i go- vabor barrier up of down?