When you have a ceiling water leak there is always the chance that the ceiling may fall due to the weight of the water and the loss of structural integrity in the ceiling material.
Ceiling no attic without drywall mold.
Mold can grow anywhere that there was water damage meaning in your drywall insulation and even in your floorboards and ceiling beams.
Next take a look at your attic.
Warm air escaping from a duct into a cold attic can create condensation and encourage mold growth.
If you can use a wide spackling knife and scrape the paint and if no mold shows at the lower layer then you do not need to replace just clean off the mold.
It s important to do a thorough inspection of the nearby area to determine if mold is present.
That dark spot on your ceiling may be the result of more than just a ceiling water leak.
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It depends on how deep the mold has grown.
Purchase an inexpensive rh meter and monitor the humidity levels in the room.
However if you find no end to the mold it is likely feeding on the drywall and the drywall needs to be removed completely.
Take care of your attic hvac air ducts too.
Condensation on your ceiling can cause water damage and promote the growth of mold or mildew.
Applying mastic gum to the duct joints and adding an r6 layer of insulation around your sheet metal ducts goes a long way toward protecting your attic and ceiling.
The 3rd potential cause is ghosting which is not actually mold though it can look very similar.
Excess humidity can also cause mold growth on the ceiling even in a well insulated attic space.
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Improper ventilation and insulation of home attic space can produce.
If it is and you plan to provide heating and cooling to the finished attic space you need to remove.
Closing in the ceiling too quickly may trap moisture that can foster the growth of mold and mildew.
The attic floor which is the ceiling of the living space below often already is insulated.
How to fix ceiling condensation.