How Long Does It Take For Mold To Grow On Sheetrock. Preventing mold growth on drywall can be approached via two strategies: That dark spot on your ceiling may be the result of more than just a ceiling water leak.
Under ideal conditions (optimal temperature and level of humidity), it takes 24 to 48 hours for mold to germinate and grow. Preventing mold growth on drywall can be approached via two strategies: For instance, if you allow a carpet to remain wet after a flood, mold will inevitably begin to grow because the spores already exist in the environment.
The process can take as little as 24 hours, but you might not see the damage for a week or more.
Mold can also grow in dust, paints, wallpaper,. There is some conflicting information out there about how fast the mold can take hold and begin to grow. Make sure you only enter your home once it's safe though. Even after drying it out, if mold has taken root, it will persist.