Small bulge in inground pool liner

[joep3b99]

Hello,

This week I noticed in the shallow end of my vinly-lined inground pool a rock-like bulge about halfway down in the corner of the shallow end. It is hard, not a bubble, and feels like a rock. I did the best I could with the photos. One is a zoom in on the bump, which protrudes quite far. The other two are looking down from the top corner of the pool. I have been monitoring the water level and it does not seem to be leaking. I am not sure what to do about it prior to closing for this winter.

Should I put a patch over it just to be safe, hope for the best, and wait until it is time to replace the liner to deal with it? Or should I be concerned that there is some underlying structural issue that should be addressed sooner rather than later.

Thanks!

Joe P.

 

[Texas Splash]

That's quite the bump for sure. It might help viewers to know the following:
- How old is the pool/liner?
- What type of coping do you have? Can you post a pic above so we can see the trim and decking?
- Have you set a date for closing yet?

I'm sure others will follow with some advice. Best of luck.

 

[joep3b99]

Thanks for the prompt reply. I have only been in the house a couple of years, but the liner is only about 10-years old per the previous owners of the home. If I had to replace the liner it would be disappointing. I have attached pictures of the corner. It's aluminum coping, typical of pools with steel or fiberglass walls I think, but the experts here would know better. I am trying to find out for sure from the previous owner the wall material. There is some concrete damage in the corner of the pool where the bulge appeared which I was planning to repair in short order before the bulge appeared.

I was planning to close the pool on 10/3.

 

[joep3b99]

No water loss after a week.
Confirmed with prior owner walls of the pool are steel.
Anyone have any thoughts on a possible source for the protrusion pictured, halfway down the corner in the shallow end of the pool?

 

[borjis]

I've got two small ones like that in the deep end.
Liner was install 5 years ago. I'm not planning on doing anything about it until it gets replaced in another 10-15 yrs, then I'll take that day off and point them out.
Imo if they don't get bigger, you might be ok to leave it alone.