Repairing water damage to ceiling drywall where ceiling meets wall

chef_carol

I have a question for how best to repair interior water damage to ceiling drywall along a wide, thin section where the ceiling meets the wall. We recently experienced slight water damage to our ceiling drywall due to water that entered through gaps that in the exterior roof flashing. Now that the roof flashing has been re-sealed by a professional, I would like to address the drywall water damage in my condo. The water damage is limited to a 10...

Originally asked by ted1918 on Stack Exchange (diy) (CC BY-SA 4.0).

uphilltech

Great question — answering as the UphillTech team:

You'll want to remove a section for repair and inspection. Keep in mind, the hard part of wall finishing is the plastering. Also the worst part of the water damage is going to be in the least visible area, in behind the wall. Cut out a section of the damaged wall large enough to inspect behind. Mold is a concern but once it's dry it tends to die. Anti mold spray is available for exactly this purpose. Mold spray www.homedepot.com

Full answer by Joe Fala: https://diy.stackexchange.com/a/159794 (CC BY-SA 4.0).

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