I had to install a new liner in my ABG and after looking into it, decided to use foam insulation sheets for the pool floor where I previously had a sand bottom. For my 24' round pool, I needed 15 sheets. I hope I did not mess up here, but all Lowes had in stock was 3/4" so I bought it at $12.24 per sheet. I do not see why it shouldn't be fine - hope so anyway.
Got to admit i thought it was a real pain to install. The heat and humidity did not help as I was literally drenched in sweat. i just laid out as many full sheets as I could and then cut for the edges.
To cut the edges, I got a piece of 2x2 (anything would do, this was handy), rounded off one end of it and then drilled holes in a line down the middle of it, sized to fit a pencil.
Then I just placed the rounded end of the piece of wood against the pool wall with the pencil on the foam sheet, pulled the wood around the wall and it marked the sheet where it needed cut. A few of the pieces did not work out quite that easy, but it went well for the most part.
Of course before I finished it started pouring down rain. I expected all of the duct tape to be pulled off but it actually held up pretty well.
I must admit that a few hours into it I was semi-regretting it - but it was just the sweat doing the thinking.
All done, wall foam up (1st time I have used it also and i have had this pool for about 16 years now), foam cover installed (I have used this before, is the only way to go imo) and I put the liner in the pool.
The side bonus of the foam floor - adjusting the liner.
When i had a sand floor, moving the liner around to line it up was not extremely hard, but it did take effort to keep from messing up the sand beneath it.
With the foam, man what a breeze. the liner just slides around where ever you want it to go. You can stand at one end and barely pull to get a wrinkle out of the other side......
I am sure i will enjoy it better than the sand bottom when i am done, but just for the ease of installing the liner made it worth it.
Price was was no more expensive than a pad. My pool has been there for 16 years and I have never had a weed problem, so I just installed the foam over the sand, not worried about nutgrass etc........so a pad would have run me as much......
I did do all of the installation by myself so if you had 2 people it would be a much easier, quicker job. Well worth it so far, we will see how it holds up