Mold Remediation and HVAC recommendations for Baton Rouge

we always use servpro for commercial mold remediation I’m sure they do residential also. Call around to hvac contractors and tell them your issue they’ll tell you whether they can do it or not. Everyone is really busy right now.

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She was told by one company that she would need to have the upstairs covered in isoboard on the attic side (the attic warps around these bedrooms on two sides) to prevent the temperature gradient getting to the inner sheetrock and giving a moisture issue.

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Well that does make sense if the vertical walls in the attic that butt up against the bedroom walls are not insulated. Heat chases cold in thermodynamics, meaning the hot air from the attic is going to migrate to cooler, conditioned bedrooms. If the dew point temperature of the attic air is higher than air temperature in bedrooms, water vapor in the attic air is going to condense on the drywall and in time result in mold developing on the drywall - the analogy is removing a cold beverage from the fridge, placing it on the counter, and it begins to sweat.

The colder one keeps the indoor temperature the higher the likelihood of this going to happen. Does your daughter maintain “cold” upstair bedroom temperatures? Say 70 F & below?

Of course I’m not saying that the HVAC needs checking, air balanced, etc. but if I’m interpreting the situation correctly as you’ve described it it seems the first step to permanently fixing the problem after the existing drywall mold is remediated is to insulate the vertical walls in the attic, on the attic side, that butt up against the bedrooms.

Mold Man Solutions - owner's name is Jason Fontenot