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Old 10-11-2019, 04:12 PM   #1
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Mold for Fungus?


Hi,
I wanted to know if this is mold or fungus related in the attached photo. You might need to increase the brightness on your screen. It is on couple of wooden support beams. This is in my crawlspace. The crawlspace has concrete floor.
I tried to scrape it off the wood joist but it didn't flake off. It was not powdery like regular mold and didn't get on my hand. Any thoughts?

How should I remedy this?

Thank you!
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Old 10-11-2019, 04:51 PM   #2
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Re: Mold for Fungus?







Mold = Fungus


Treatment would be the same.
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Old 10-11-2019, 04:53 PM   #3
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Re: Mold for Fungus?


What colour is it?
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Old 10-11-2019, 05:24 PM   #4
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Re: Mold for Fungus?


it's whitish.
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Old 10-11-2019, 05:45 PM   #5
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Re: Mold for Fungus?


sometime we use the same wood for forms, are you sure it is not concrete.
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Old 10-11-2019, 06:36 PM   #6
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Re: Mold for Fungus?


Looks like white mold. Get some microbial spray or some vinegar.
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Old 10-11-2019, 06:46 PM   #7
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Re: Mold for Fungus?


Need some more details.
Where are you?
Have you measured the RH, humidity down there?
Do you run a dehumidifier?

Cleaning it up is one step, eliminating any conditions that make it grow is the more important one. Having concrete down there is good but moisture vapors pass right through it, by the gallons.

Bud

I cranked up contrast and brightness ans still not sure what you are looking at.
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Old 10-12-2019, 09:45 AM   #8
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Re: Mold for Fungus?


yeah, i know it's not concrete because it didn't flake off the wood I tried to. I sprayed concrobium about 8 months ago on the whitish parts. It is still white on the wood.
Was it supposed to have gone away.

I am in northern NJ. I do have dehumidifier running in the basement. The RH in summer gets to 80% without the dehumidifier running. However, this is in a crawlspace and it has a narrow opening from the basement.
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Old 10-12-2019, 10:37 AM   #9
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Re: Mold for Fungus?


My experience with the Concrobium is it may kill the mold spores but does little to erase the appearance. Treating mold on my shower walls left them looking ugly. I went back to a bleach solution and all was gone. I assume it killed the mold but certainly left the walls looking great. It does have to set for awhile. I now have a great bath fan and mold and moisture issues are no longer a problem.

Being in NJ (I escaped) you will have high summer humidity thus the dehumidifier will need to be a permanent fixture. How much it runs will be determined by how successful you are at sealing out all incoming moisture, mostly moisture vapor. Normally an encapsulated crawlspace would do the job but your space looks complicated. I would need more pictures from down there to provide more details.

Note, humidity is inversely proportional to temp, so a cool crawlspace will hit the condensation level much quicker. Also, the performance of your dehumidifier will decrease as it gets cooler. Where does that dehumidifier drain to?

Bud
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