The 3rd potential cause is ghosting which is not actually mold though it can look very similar.
Ceiling no attic without drywall mold.
Condensation on your ceiling can cause water damage and promote the growth of mold or mildew.
How to avoid condensation leaks attic mold insulation mold structural damage to roof framing when roof venting is not possible cathedral roof and knee wall insulation venting air path options in older homes hot roof designs.
It s fragile easily damaged and a prime breeding ground for mold and bacteria.
Mold can grow anywhere that there was water damage meaning in your drywall insulation and even in your floorboards and ceiling beams.
Taking on a home renovation project is the best opportunity to reconsider your options for your home s interior walls.
How to fix ceiling condensation.
Suggestions for un vented or hard to vent building roof cavities.
Purchase an inexpensive rh meter and monitor the humidity levels in the room.
Drywall produces a hollow sound when you bump it and doesn t hold well to water damage or in high traffic rooms.
If it is and you plan to provide heating and cooling to the finished attic space you need to remove.
Improper ventilation and insulation of home attic space can produce.
Excess humidity can also cause mold growth on the ceiling even in a well insulated attic space.