Question on pool plaster discoloring

BTERRY1

Active member
Jul 27, 2019
27
San Diego
Hi all. First time poster. A year and a half ago we had our pool redone. New plaster, coping, and salt systems added. We wanted dark as possible plaster. Pool guy told us it will get modeled looking over time. Does this little normal? I tried brushing and scrubbing but nothing will remove it. PH is kept at 7.4. Alkalinity at 80ppm. Thoughts? Thanks in advance. 25153238-3787-49F6-84EF-730C98BD272C.jpegE8C5377B-FE57-4ACE-91B7-1020AA7030ED.jpegC506593B-E694-4803-B2C1-8014361D98C5.jpeg2086825F-8F1A-469D-B386-3B07235900BE.jpeg75FD3004-E1FD-4BD0-A46C-899CB32684BB.jpeg
 

LaROckl

Active member
Aug 12, 2018
33
New Orleans, LA
Yup... I did a redo as you did ...coping, plaster, salt system etc. I even had *all* the old plaster removed down to the gunite. This was 4 months ago... and while *very*, *very* slight (barely noticeable) ...it has begun to mottle. I do not brush/scrub... just the wheeled pool cleaner. I visited about a half dozen *dark* pools in the neighborhood that had been done from 1 to 7 years or so and saw the mottling over time. In the natural world it's all mottled. Personally, I don't mind the mottling at all... looks like Costa Rica shore line. My understanding is that the calcium from the plaster will continually bleed through as it cures... it will slow over time ...but, it will never stop. <-- correct me if I'm wrong here.
 
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Rich D

Bronze Supporter
Aug 3, 2018
578
MA
I only wish my 2 yr old med Grey plaster looked as good as that. I do not mind the mottling but my pool looks like it is going to quickly turn into a off white plaster finish and a lot of the mottling looks like trowel marks instead of random color variations, along with a few foot prints...

MVIMG_20190421_114100-3024x2268.jpgMVIMG_20190421_114128-3024x2268.jpgMVIMG_20190421_114134-3024x2268.jpg
 
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LaROckl

Active member
Aug 12, 2018
33
New Orleans, LA
Y'all got some sweet pools! Anyone considering a *dark* pool should check out a few in your neighborhood that are 4 to 7 years old and decide from there. In my case the mottling didn't bother me. However, I do prefer the white plaster (the wife wanted the dark) the light refraction is different i.e., white plaster = Caribbean green tint, grey plaster = blue tint. I also think that the white plaster was a better match for our period 50(s) - 60(s) retro motif.

I'll put up some pics of mine once the neighbors GET OUT OF THE POOL ... I'm hiding up in my Lionel Train Room at the moment.
 

SteelBlue

Well-known member
Jul 4, 2019
62
Scottsdale, AZ
Sorry but none of the above pics are "normal" for a dark colored pool. Go around and look at some model homes, most will have dark colors these days, and none of them look like that. If a pool company can make a model home's dark pool look good, then someone else can too. My pool was redone six weeks ago with a dark plaster/pebble. It has very faint mottling, a cloudy white dusty look to the bottom. It is nowhere near as bad as those shown above, and my installer agrees it is not good. But he says wait three months for everything to cure and if it's still the same, he will remedy it. How? I don't know, but I bet it will be an acid wash.
 

ajw22

Gold Supporter
TFP Guide
Jul 21, 2013
10,749
Northern NJ