Well it’s now been a year since bringing this to the attention of the pool builder who plastered the pool. He finally came by in January and drained the pool. They took a grinder to the nodules and did a quick patch on 3 good size spots where the plaster had fallen off the wall. He didn’t understand what was happening and told me he hasn’t seen this in his 40+ years of pool building. He then decided to attend a seminar on plaster and chemical management on February 6 2019. Now he tells me he thinks it’s a chemical imbalance that caused 3 1/2 year old plaster to just fall off the wall as shown in this photo.

He says he wants to send me some pamphlets and literature proving that it is my problem not his. He has invited me to check with my experts as well to come to a conclusion in this matter.
The contract does warranty plaster work “bond only” for 5 years.
Any thoughts on this one? Onbalance are you out there? I really need to get this issue resolved. My salt cell has also gone out due to the TDS in the water once the plaster fell off and the base was exposed.
I maintain my chemistry diligently and have used this site exclusively for advice since the planning stages of the pool 6 years ago.
Thanks to anyone who can offer any help. I have more photos as well.

He says he wants to send me some pamphlets and literature proving that it is my problem not his. He has invited me to check with my experts as well to come to a conclusion in this matter.
The contract does warranty plaster work “bond only” for 5 years.
Any thoughts on this one? Onbalance are you out there? I really need to get this issue resolved. My salt cell has also gone out due to the TDS in the water once the plaster fell off and the base was exposed.
I maintain my chemistry diligently and have used this site exclusively for advice since the planning stages of the pool 6 years ago.
Thanks to anyone who can offer any help. I have more photos as well.