Cinder block home – mold on drywall
I have a 1960s construction cinderblock with brick facade quadplex that is apparently experiencing mold issues. The problem was discovered after a TV that was mounted to drywall on an exterior wall fell off, removing some of the drywall. On the backside of the drywall was the appearance of mold.
There is no insulation inside the cavity, and the walls were framed with 1x furring strips attached directly to the cinderblock. I have attached a picture of one of the pieces of drywall that was removed.
I’m assuming that the water vapor was moving from the outside humid air & condensing on the backside of the cool drywall? (the room is air conditioned via a window unit). I also know in my climate (4a) a general vapor barrier would not be recommended… but is there a remedy short insulating all of the exterior walls with foam?
Thank you in advance!
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