AGP with 60" (or 66") wall
I would like to build a round, flat bottom AGP with a wall height of 60" (even 66" if possible) using an overlap type liner. Searching the internet it appears that 54" is the maximum liner wall height.
If I don't want to use an expandable liner (issues with wrinkles and limited color/print selection), is a custom liner my only option? Or, is there sufficient, extra material on "stock" AGP liners to cover a 60" (or 66") wall? Thanks.
Many years ago I would say no problem to what you are asking. Today, however, it's a different story.
Vinyl Liner Overhang has gotten much less over the years. It started happening about the same time the walls started getting bigger. The old 48 inch liners had so much extra liner we would tuck at least a foot or better back into the pool. When the 52 inch walls started becoming popular most of the standard 48 inch liners would fit them just fine.
Then they all started to shrink. I have installed 52 inch liners into 52 inch pools with only a few inches left over. It can be even worse with a 54 inch liner into a 54 inch wall.
Given a Doughboy brand 48 - 52 inch expandable liner, and a hot sunny day, I could probably still make it work. And with a Doughboy liner there are never any wrinkle issues. But there is no way I would recommend you trying it. That is a very expensive investment to make and have it come up short by an inch or two. But using this method it might be possible.
Expandable Liner Installation
I would check with In The Swim and see what the cost a making a custom liner would be. It should not be that difficult to add the needed inches to the side material. They also have all the fancy colors to choose from.
Be sure you understand the difference between mil and gauge before ordering. A 20 mil liner is close to being equivalent to a 25 gauge liner. A 20 gauge liner is about 16 mil, very thin. So you would probably want to go with a 25 gauge, at least that's what I would do.
I would love to see photos of the completed project. I hope it turns out well.