Cathedral: Mold between Soffits - Ventilation Problems, Solutions And Theory - Contractor Talk

Cathedral: Mold between Soffits

 
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Old 04-01-2018, 11:15 PM   #1
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Cathedral: Mold between Soffits


Replacing fascia, trim and whatever damage at 30 year old client home in North Texas. Found shoddy prior repairs done by prior HO to make make sale, no big deal.

Found mold on the soffit at equidistance between the soffit vents. Upon closer inspection, after pulling fascia, could see that no baffles were installed and no roof vents were installed. The room is a partial cathedral with a flat ceiling section in the middle (and a pyramidal attic space above).

I suspect moisture laden air is getting into the soffit area, stabilizing in the space between the soffits (vs mixing in space above vent) and then condensing due cooler nights or wall from interior.

No way to go to a dense pack insulation without roof or sheetrock tear off. So stuck with searching for least bad option. Should we remove all the soffit vents and run the risk of stabilized air all along the soffit or put in continuous soffit vent and hope for exchange of air before condensation?

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