After our pool cover was removed to open our pool, there is a huge light orange stain all the way around the entire pool underneath where the cover was placed. Power washing with water did not remove it and it looks like a chemical stain of some sort. Need help to identify what the heck this stuff is and how to remove it. Appreciate any help!
Concrete is Stained, need help
- Thread starter kstruglia
- Start date
Welcome to TFP!!!So that just appeared suddenly over the winter?
I have no idea what it is, but I agree it looks chemical and to me does not appear like it is going to be possible to remove it.
We had someone professionally close and open it, obviously the pool deck wasn't like that prior to closure. Now the entire deck area is stained like this under where the pool cover would have been. It's a total mess 
borjis
LifeTime Supporter
We tried a diluted bleach water solution on a small inconspicuous spot with no results whatsoever. The pool company stated we don't have a warranty for the deck so we're trying to figure out on our own what the stain is and how to remove it. It's even on our stonework, turned it orange.
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No episodes of acid rain this winter either
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No episodes of acid rain this winter either
wonder if it was muratic acid condensate for not mixing well before closing? Sorry just guessing. I would also check on the concrete network- one of the members their may have an idea as well.
I have the same problem. Any answers?
http://www.troublefreepool.com/threads/93344-Concrete-Yellowing
http://www.troublefreepool.com/threads/93344-Concrete-Yellowing
Hello. Just wondering if you ever determined what the stain was. I have similar orange stains at edge of concrete deck closest to the pool, although not quite as bad as yours. Don't know what they're from or how to remove. Thanks.
The only thing I can offer is that when I had my pool liner replaced, their pump left rust stains on my pool deck. When I asked them to clean it, they used straight bleach, staining the deck (because the concrete had a tan stain to it originally). I complained again, and they came back with loose sand and a huge orbital buffer and actually sanded the deck in spots. To my surprise, it looked really good .
So it may be possible to have a contractor come out and sand the concrete deck to remove the stains.
So it may be possible to have a contractor come out and sand the concrete deck to remove the stains.
Mine does that at the end where the autocover lies. I believe it is a result from the chlorine off gassing under the cover, but am not positive. Mine seems to lighten up when allowed to get sun on it.
Maddie
Maddie
Thanks we are a pool builder in Massachusetts and finding this under several covers this year and have never seen it before.Mine does that at the end where the autocover lies. I believe it is a result from the chlorine off gassing under the cover, but am not positive. Mine seems to lighten up when allowed to get sun on it.
Maddie
Anyone have a solution for this? We removed our winter cover this week and have the same discoloring all over the place. It doesn't appear to be something that can just be scrubbed off.
Do any of you affected use fertilizer or a lawn spray service in the fall or early spring?
Yes. We thought about that but the staining is just on the perimeter of the pool no where else.
I would make up a spray bottle of 50% clorox and 50% water and spray the whole area. I don't have REALLY high hope of success but it's an easy, inexpensive attempt at a fix.
If you do this, "blend" the edge of the sprayed area or even better spray the whole deck if it's not too big.
If you do this, "blend" the edge of the sprayed area or even better spray the whole deck if it's not too big.
We did this last year and it faded a bit. This year a lot of the orange is around the stairs. It looks awful.