Pool built 3 yrs ago, shotcrete with tile finish. The pool has a infloor cleaning system on its own circuit. (PCC2000). The pool has a about 12 wall PVC penetrations excluding the infloor pop-ups. The penetrations all had scalloped out cavity around each pipe on the internal wall that was trowelled at the time of the pour. The shell was cured by spraying for a week and the tiler tells me that the penetrations were treated with Xypex megamix + Xycrylic Admix and tiles applied. Due to pool builder delay it took then took another 8 months before water was put in the pool (thru hot Australian summer). I was plagued by leaking penetrations that the pool leak guys tried to fix but after one was epoxied another would show up and so it went on for two years. i finally bit the bullet and the pool was drained and all the pentrations taken down and carefully rebated and packed with epoxy ( only one of the floor popoups) and retiled. It is good to have a pool that doesn't leak. So much easier to keep clean. fortunately there is no sign of structural damage to the shell. hopefully I have a permanent fix now.
No one has been able to give me a reason as to why I had so much trouble with leaky PVC penetations. Does xypex suffer if it is left without water for 8 months? Would have there been concrete movement around the penetrations that caused the xypex to fail. Would welcome thoughts from the guys who use this stuff and understand concrete construction. Is the current fix likely to be long term?