What three profiles each hang from
Three profiles, and what each one hangs from. Overlap drapes over the wall top and is clamped by coping strips. Bead snaps into a track fitted around the wall. J-hook hangs over a rail on the wall top, without a track. Each is a physical arrangement that either exists on a given pool or does not.
It fixes them well enough to be relied on: liner makers publish the attachment on every product, and it is one of the few properties on this shelf that is never left blank.
Why universal does not mean universal
It does not promise a size. Attachment and dimensions are independent, and a liner needs both to be right. A bead liner of the wrong diameter is as useless as an overlap one of the right diameter.
It does not promise a depth tolerance. Overlap liners in particular are cut for a wall height, and one intended for a 1.32 m wall on a 1.22 m pool leaves an amount of material outside that the coping strips were not designed to hold.
And “universal” does not promise universality. It names a moulded edge that covers two or three specific profiles, listed by the maker. Pages here print that list rather than the word.
What a liner needs besides an attachment
Exact dimensions, which on this shelf means diameter and depth for a round pool, three figures for a rectangular one, and a shape name for an oval. Thickness, in whichever unit the maker published. Material, because a reinforced liner handles differently at the same thickness and is often sold for a different attachment. And the seam, which is where a liner most often fails and which very few listings describe at all.
Liners, and the two pools that settle them
Pool liners, where it is the first line of every page. Steel wall pools, where the track or rail is built into the pool and therefore settles the attachment for every liner it will ever take. And frame pools, where the liner is usually integral to the pool and a replacement is a maker’s part number rather than a profile — which is its own kind of lock-in, and one the pages name.
What readers keep writing in to ask
What is an overlap liner?
One that hangs over the top of the wall and is held by coping strips clipped over it from outside. It is the simplest attachment, it suits pools with a plain wall top, and the liner’s depth has to suit the wall because the excess hangs outside.
And a bead liner?
One whose top edge is formed into a profile that snaps into a track fixed around the wall. The track is part of the pool. A bead liner needs both the right bead profile and a track already present, and neither is optional.
What does a universal or multi bead mean?
A top edge moulded so that it can be used as more than one profile — typically snapped into a standard bead track, or unfolded and used with a J-hook rail. Makers state which profiles a given liner covers, and that list is what a page here prints. It is not a claim that the liner fits every pool.
Can an overlap liner be used in a bead track?
No, and the reverse is equally true. The attachment is the first line on every liner page on this site for that reason — before thickness, before dimensions, before price.
Last reviewed 21 September 2026