Plaster streak due to watering during fill

[DanCam]

Hi everyone,

I hope that I can get some help. After my plaster was installed I made the mistake of hosing down the plaster wall. This created horrible streaks running down to the deep end. I have tried brushing and acid and nothing happens. Below are some picture. Any suggestion would be greatly appreciated.

http://farm7.static.flickr.com/6137/5995506886_8e1cf9f8bf.jpg
http://farm7.static.flickr.com/6140/5994967019_5c8f73de72.jpg
http://farm7.static.flickr.com/6029/5994967195_e675f33a03.jpg
http://farm7.static.flickr.com/6149/5995525020_f27c5a4fe2.jpg

Thanks advance.

[PoolDoc]

I looked at the pictures, and can tell that they are streaks. But to tell what those streaks are, you'll have to take MUCH higher resolution pictures.

However, if you hosed off uncured plaster, odds are that the streaks are IN the plaster. In that case, I'm not sure of anything that would remove them, except possibly grinding down the plaster some. Acid washing will actually tend to remove washed out places more than unwashed (and smoother) areas, and could even make the streaks more promininent.

[DanCam]

Ben - Thank you very much for your prompt response. Below I am attaching better resolution pictures.

http://farm7.static.flickr.com/6133/5995685790_cb34bd59bc_b.jpg
http://farm7.static.flickr.com/6130/5995687840_e251207fbc_b.jpg

I want to mention that in one specific area where my kids normally play the streaks have somewhat vanished and now has a kind of marbled finish. I am wondering if in the rest of the pool, with a kind of sandpaper or a stain remover, I will be able to scrape the surface of the plaster or will this ruin it?

[PoolDoc]

It's entirely possible your kids have abraded things enough to produce improvements.

You might try a concrete rubbing block, like these from Amazon:
Concrete Rubbing Block (http://www.amazon.com/gp/product/B0052ING2Y/ref=as_li_tf_tl?ie=UTF8&tag=poolbooks)
Concrete Rubbing Block (http://www.amazon.com/gp/product/B0052INGBU/ref=as_li_tf_tl?ie=UTF8&tag=poolbooks)

You can use them underwater, but do NOT leave them sitting around in the pool or on your deck: the screws that hold the handle are carbon steel and will rust. If you leave the wet block on your deck or in your pool, you WILL leave stains.

I should add that colored plaster, like yours appears to be, rarely looks as uniform as white plaster.

Ben

[DanCam]

Hi Ben,

I found the below products in a local store. What of those products you would recommend? Thanks in advance.

http://www.lesliespool.com/Home/Pool-Chemicals/Stain-Removers/20658.html
http://www.lesliespool.com/Home/Pool-Chemicals/Stain-Removers/20650.html
http://www.lesliespool.com/Home/Pool-Chemicals/Stain-Removers/20656.html

Regards.

[PoolDoc]

I already posted my recommendation, which was for a professional grade tool. The tools you are looking at are consumer grade, for removing scale, not plaster or concrete.

Ben

[Willjay]

It looks like you plaster color is the same as mine. Do you remember the name of the color? My plaster looks exactly like this. I kept saying it didn't look right and my wife, who went to see this color in demo pool, says that's how it's supposed to look. I remain skeptical.