I have a 10 year old inground pool that is enclosed with a sunroom. A few years ago I noticed some small areas on the coping were blistering. The condition has continued and I'm now trying to figure out what to do about it. I have attached a photo showing what some of these distressed areas look like. I could use some thoughts as to what can about it.
Some general info:
Location is Chicago area
Water chemistry is good. We did however have an issue a few years ago with pool center that messed up up water balance and had to drain the pool.
Size is 16x32.
Thanks for any help or insight on this issue.
[attachment=0:2sp36v95]Pool coping 2.jpg[/attachment:2sp36v95]
[attachment=1:2sp36v95]Pool coping 1.jpg[/attachment:2sp36v95]