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Brian, Architect
Category: Home Improvement
Satisfied Customers: 2153
Experience:  Licensed Architect- 17 years, L.E.E.D. AP
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Hello: I am encountering a black substance on my vinyl floors

Customer Question

Hello: I am encountering a black substance on my vinyl floors at times.After wiping up black substance with alcohol, there is a white crusty substance exposed that can be scraped (even with finger nails)to be rid of. Any idea what black substance can be --that leaves such a white crust? Also the vinyl tiles have large white spots in places that cleaning of black substance occurred.And I keep seeing a black substance on top of my car. After wiping,there is white spotting---appears to be eating away at paint job.After cleaning the top of car,I used cooking oil spray to moisten it up. It seemed to improve some but I had to remove so flying dirt would not be picked up. Wax has helped some. What do you think about this black substance? I have been advised that testing takes much money. Any simple tests?
Submitted: 4 years ago.
Category: Home Improvement
Expert:  The Home Smithy replied 4 years ago.

Hi. Welcome to Just Answer.

If it is getting on your car and inside of your home then it has to be airborn.

Are you leaving any doors or windows open?

Are you near any industrial manufacturing companies?

Does the substance have a smell?

What is the texture of it? Hard, gooey, ash like, brittle, etc.

Any additional information would be helpful.


Customer: replied 4 years ago.
It is dirtlike but leaving a white residue
after wiping with alcohol. I just purchased new alcohol.
Yes There is an industrial mfg near by. I am surrounded by neighbors who should be experiencing the same problem. I will ask some of them.
Expert:  The Home Smithy replied 4 years ago.

Ok let me know if they are and what kind of manufacturing plant it is.


Customer: replied 4 years ago.

Your service is good


Where can I rate your svc

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