Below is a picture of a moldy basement wall, certainly has to be dealt with before finishing.
And below is a moldy bathroom ceiling it’s really pretty common to see mold in places like this you’ve got to kill it before you fix things up here some areas of flaky paint that need to be patched and scraped and smooth, but these moldy areas will come back through the new paint if you don’t kill them first.
This is a bedroom wall that gets cold during the winter time and forms condensation, that’s what you see, in all of these cases mold is always triggered by excess moisture, you’ve got to get rid of the moisture problem before you can deal with the problem once and for all.
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How to Kill Black Mold Safely
When it does come time to kill the mold and mold spores I like to use a registered fungicide, it’s non-toxic, mold control authorities these days recommend against using bleach which is the traditional mold killing substance, because it is toxic to people and it doesn’t really kill mold spores in porous surfaces, the registered fungicides that work the best function.
The surface with some mold growing on it this is a moist surface so you first got to dry the thing out and keep it dry next you wet the surface usually with a sprayer to flood the area with the mold control liquid, that’s a close-up view of what happens to the mold spores even though this liquid is non-toxic it can kill the mold spores, by crushing this is the the wetted mold spores, when that liquid dries it shrinks and mechanically crushes mold spores which are kind of like seeds that start in the mold growing again, once those spores are crushed and dead and mold is not going to grow back as long as you keep the area dry.