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Question DetailsAsked on 5/1/2013

how safe is the inside of your house if mold is in a closed stairwell?

mold in stairwell how safe?

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4 Answers


If t

Answered 7 years ago by LCD


If it's actually mold, you should take action. Mold gives off spores that become airborn, so it will travel. Some people are much more allegic to molds then others,si symtoms vary a lot.

I'd contact a mold specialist,to have it accessed,as soon as possible.


Answered 7 years ago by BayAreaAC


Sorry - my answer got cut off. As the other response says, mold spreads by spores, so any disturbance will spread a significant number. However, the spores also become airborne by themselves. While there are mold spores in the outside air all the time, they usually do not cause visible mold in a house because they lack two things - protection from bright light (room lighting strength for about 6 or more hours a day) and moisture. These two latter factors are why modl grows in bathrooms so easy - light is usually off, and ample moisture source from baths and showers.

If you have mold in the stairwell, it is probably dark most of the time, and must have moisture available if mold is growing. Unless the stairwell has no ventilation to remove air moisture, you should be looking for a source of moisture. If the mold is only in one isolated area, check if there might be water coming through the wall from foundation seepage, leaking pipe, etc ?

Having visible mold is a should-cure issue, especially if you have anyone in the house who is very young or old, or has compromized immune system or breathing or lung issues. However, mold (especially black mold, which grows where there is longer-term free water such as from pipe leaks) can cause lung issues with people of any age, and there is some question whether esposure to black mold might be a cause of asthma.

Answered 7 years ago by LCD


The short answer is that it is not safe. Now that I have given the short answer let me qualify a bit. It does not really matter if it is a closed stairwell or one that is used on a regular basis. Mold is for the most part microscopic and so infiltration into the living space is going to occur. The closed door may limit the exposure but chronic low exposure is often as bad or worse than acute immediate exposure. In additon there has to be a moisture source that is contributing to the mold growth and so you should have someone evaluate the location. That moisture may just be elevated relative humidity in the space because it is closed off or because you are not in the space regularly there may be a leak you are unaware of. I would suggest getting a professional to evaluate and provide feedback.

Answered 7 years ago by MoldNMore

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