Dirt crawlspace insulation
I live in northern Minnesota. The house I purchased has a large bedroom, half of which is an addition to the house. It gets fairly cold in the room during the winter and I am looking at better insulating it. The addition portion has no slab or foundation under it. It was basically built as a fourseason porch with only footings. There is access underneath from outside with enough space for me to comfortably crawl underneath. It has dirt floor, batt insulation in the floor joists and a flexible/insulated heating tube going to the far end. No other pipes or wires. I thought about insulating it like an unconditioned crawlspace, only problem is there is no cinder block along the base of the walls. One side is a thinner wood frame covered with plywood. The other two sides are only tin sheets for looks. Wondering what I can do to seal and insulate underneath there. There is really no functional space underneath so sealing it up would be preferred.
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