I want a encapsulated crawl without heating it?
I have a small cinderblock crawlspace that shares a wall with my basement. I measured 8 foot by 12 (from the outside while in the yard) I bought this house recently so I dont know much about it. It’s totally dry, it has no plumbing or ductwork in it with a dirt floor. Just some electrical cords running into the house. I have paperwork showing that the previous owners had the crawlspace being encapsulated a part of their requirements when they first bought the house 10 years ago. So I can safely say the crawl has been ‘half encapsulated’ for 10 years without issue. By half encapsulated, i mean it’s a terrible & unfinished job. The one vent it had was closed and covered with foam board. It the 3 outer walls have foam board wedged to stand against them. The plastic sheeting all fell off as duct tape was used. Rimjoists unsealed & stuffed with fiberglass. I have fixed the rim joists with caulk, foamboard & greatstuff. I’m working a wall at a time to check for cracks, hang 6 mill plastic sheeting, then foamboard sealed. Thing is, there is no mold or water issues so why should I bother heating it? What am I over looking? The exterior door is rotted cabinet looking trash so I suppose it’s technically been a vented crawl all along between that goofy door and the unsealed rim joists. Can I avoid the expense of running duct or the other option of a exhaust fan set in a rimjoist? Oh sorry this is in the black hills of south dakota. Climate zone 6