Crawl space in North Carolina
Just had 15 year old 2300 SF crawl space treated for mild mold/fungus. We never had vapor barrier down. Having new HVAC R-8 flexible duct installed. Also putting down 8 mil reinforced poly on ground. Never had water intrusion problem; however two boot registers were vented under cabinets and over the years created a huge moisture issue at subfloor which went unnoticed because it was hidden by insulation between floor joists (luckily no rot). We are relocating those boot registers. Ground is pretty saturated now from mold remediation 5 days ago (pressure wash with Shockwave). Poly will go down this week after HVAC duct work complete.
We purchased dehumidifier (Santa Fe Advance 2) and are using that along with fans to aid drying following mold remediation. Crawl Space temp is 59-61 with 75% humidity (down from 90’s following remediation 5 days ago). Presently in NC the temp is 30’s at night with 90’s humidity and 50’s day temp with 50’s humidity. We are working towards a sealed crawl space by the spring as finances hopefully allow. Right now the vapor barrier will go down on ground and just lay against the wall until we can get started on the walls. Obviously encapsulation would be ideal but can’t swing $$$$$’s at this time. Also, we don’t want to go the HVAC supply air route. Is a dehumidifier sufficient or do we need to add exhaust fan in a few vents and keep others closed?
Any suggestions, comments, recommendations are most appreciated. Thanks
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