Fuzzy mold on garage floor question

[Big Red 82]

i have several spots on my garage floor that seem to grow this fuzzy almost spiderweb mold in the areas where the finished concrete has been chipped or cracked i treated it with concrobium and it comes back so i do not think its mold any help here would be much appreciated,

[Ironman]

i have several spots on my garage floor that seem to grow this fuzzy almost spiderweb mold in the areas where the finished concrete has been chipped or cracked i treated it with concrobium and it comes back so i do not think its mold any help here would be much appreciated,

What color is it?

[hog_down]

Can you post a picture?

[Big Red 82]

its white i will post a pic this eve,

[riverbowman]

Sounds like it is leeching moisture up from below through areas where the finish is gone. Had something similar issue on a job where lime was used to stabilize the soil. Wasn't spider web looking though. Just a white film.

[wloftis]

Curious as well. I am noticing, what sounds like the same thing, where my garage door sits on the floor, but there is no chip or crack on the floor.

[wloftis]

Side note: been in the house for 4-5 years and never noticed it until this year.

[Snowflake Killa]

It's caused from moisture it's calcium. There's not much you can do but clean it off. You could send thousands of dollars to stop it but probably not needed

[Ronnie]

Side note: been in the house for 4-5 years and never noticed it until this year.

I have the same stuff, kinda looks like frost to me. Studied up on it one time, it's something to do with a BAD concrete job and water under the slab. Don't think anything can be done to stop it. Google it

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[Snowflake Killa]

You can stop it with shot blasting and epoxies

[R Dubya]

This sounds like efflorescence, which is caused by water migrating through the concrete and reacting with calcium and minerals in the concrete, leaving a white deposit on the surface. It has nothing to do with a bad concrete job (not saying a bad concrete job wouldn't make it worse) Google effloresence, lots of info out there, feel free to shoot me a pm if you want to chat. Remember that the problem is coming from the inside of the concrete, DO NOT put a topical sealer on it, unless you treat the problem first.

[Big Red 82]

Pics

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[Big Red 82]

One more

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[Ironman]

Yes, efflorescence as RDubya said.

https://greenworksllc.com/what-is-efflorescence-how-to-prevent-it/amp/

[mikemorvan]

Yes, efflorescence as RDubya said.

https://greenworksllc.com/what-is-ef...revent-it/amp/

What they said