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Does a firewall prevent mold from spreading


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I have a townhouse in South Carolina. There is a firewall between townhouses. Recently my neighbor had a water issue and my renter mentioned that there was possible mold damage.

She is concerned, and want to know if the firewall might help prevent mold from traveling to the next townhouse.

Thanks for any advice.

Barbara

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A firewall has to do with retarding the spread of fire. I doubt mold spores can get through it if properly constructed but that doesn't matter. That mold wouldn't be there in the first place unless elevated moisture levels were present. If that elevated moisture can get through that wall fast enough then you might well have two mold growth sites instead of one, one on each site of the wall, because mold spores are already everywhere. It's just waiting for elevated moisture on a suitable media to start growing.

Some firewalls have an inherent moisture barrier and some don't. What is your firewall made of?

Marc

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Your place is already full of mold. Mold is everywhere, on every square millimeter of everything on Earth in dizzying profusion.

Without even trying very hard, you can find lots of people on the interweb that will tell you deadly mold is working it's way into your house and it will cause you to succumb to a very long list of diseases that will ruin you in all sorts of fascinating ways.

The larger question is, do you want to believe all that crap? What do you want to believe about mold?

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A fire wall is UL tested and is rated on how long it takes for a fire to burn through the wall. The idea is that if your smoke and carbon monoxide alarm system is working you will have time to evacuate the building. The materials are typically not designed to control the spread of moisture or mold.

Mold needs moisture to propagate. Fix the leak and you will substantially reduce mold related "Problems."

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