plaster discoloration

Hey team! I've got an ~18,000 gal pool in-ground gunite/plaster built in 2020. It has a salt water chlorine generator do pretty well with the with water chemistry, tho I admit to being a little lazy with the muriatic acid, so my pH is commonly around 8.0. I've seen very localized deposits of...

Looking for some advice from others that have dealt with replaster quality issues. I had my pool replastered last May. I stayed on top of the chemistry per NPC guidelines and followed instructions on brushing etc. I could tell there was some discoloration during the summer and it seemed to get...

I have a new pool, built in Nov 2022. In the spring we noticed some white spots in the plaster (NPT plasterscapes deep blue harbor). As the year progressed the spotting went from white to a grey discoloration. The discoloration is most prevelant on the stairs, ledge and deep end seat. The...

Hello All, New pool owner. Bought a house with a pool almost a year ago in Southern California. I hope that someone can give me more insight on what they think the staining could be in my pool? This isn't something new and has been there since we bought the house. The pool is roughly 26 years...

I'm about to replaster my pool and am trying to decide on the finish. I've always been happy with the look of plain white plaster, but there seems to be a trend among all the contractors I've spoken with where they provide little to no warranty with regular plaster. I really don't know if this...

Our pool is about a year old now and it has several spots that are discolored. I had the water tested and it was way low in calcium and ph was off also. I was using home test strips and according to the local pool store those are unreliable. I got the pool balanced but the discoloration remains...

Hello all, our gunite pool with "medium gray" plaster was finished in late May/Early June, and while its usually less noticeable when the pool filter is running, there is a lot of discoloration to the plaster (see pics) The start up procedures were all run by the pool builder, who also has the...

We are in the Dallas, TX area, and had our 29k gal saltwater pool resurfaced in March of 2020 from plain white plaster to Ocean Blue PebbleSheen. We spent $12k. On the final day of installation, the company called and explained that the final step, the acid wash, should take between 4-5 hours...

Plaster colors can fade or turn whitish for a handful of preventable reasons. First off, scale can be deposited onto pigmented plaster surfaces by out-of-balance pool water. As is widely known, calcium scale makes the surface rough and turns it white, and acid washing is often the remedy...