Water leaking behind liner track has caused some issues.

So I have solved how water had been getting behind my liner. It was not a leak or ground water issue but seeping behind the liner track after running from the pool deck and also from heavy splashing while in the pool. I have taken a couple steps to try and stop it like sealing the expansion cuts on the deck and adding a liner lock. It has helped but not solved it completely . There is one area on the deck that does not have a good slope away and with heavy rain this will continue.

So having a couple water pockets in the walls has caused some issues. First I developed a couple quarter sized bumps on the wall which I suspect was sand and grit from the expansion cuts. The liner track has a lot of grit in it. They are about a 2 ft down and there is probably five of them. The second where the water would collect it has a caused my wall foam to get a slight wrinkle about a foot down.

So ideally there would be no water getting behind the liner but I would need to correct the deck drainage but I have no idea on how to stop it when the kids are splashing. How bad is this on my steel walls? Is there a trick to smooth out the wall foam wrinkle and to work out the sand grit collection? Any tips on further prevention of water getting behind the track? Will the water draining down to my vermiculite/ cement floor make it soft?

There are generally three spots of water about 1.5’ long up to six inches deep and feels spongy like there might be a quarter inch of water behind there. Sometimes it can take a week for water to go away.