OVERLAP POOL LINERS: On this type of pool, the pool liner goes up and over the top lip of the pool wall. It then comes down over the edge on the outside of the pool. This type of pool liner is normally secured with some sort of clamping method that holds it in place. Any adjustment that may be needed on the wall height of the pool liner is made by removing the clamp(s) and either letting in or pulling out more of the liner.
BEADED POOL LINERS: These types of swimming pool liners differ from others by the method of installation. Beaded Pool liners simply go up the pool wall then snap into a track using the bead that runs along the liners entire edge. This track the liner snaps into is referred to as the bead receiver, and runs continuously along the top of the pool wall. Beaded pool liners usually have a decorative top border. Beaded liners are usually easier to install because most of the time you do not have to take off the top rail of the pool in order to change the liner. This type of liner works very well in situations where a large deck is built around the pool, or if the pool is sunk into the earth. Converting an existing swimming pool with an overlap liner, to a pool with a beaded liner, is easily accomplished by installing the bead receiver onto the wall and installing the right height liner. Beaded pool liners come in 3 sizes, 48″, 52″, or 54″ wall heights. If there is any height adjustment that needs to be made, this needs to be done by removing or building up the height of the “cove” located at the base of the pool wall within the pool. Cove is available in “wedge” shaped Styrofoam or sand can be used by compacting it into the corner where the wall meets the floor.
UNIBEAD J-HOOK POOL LINERS: Uni-bead or J-Hook pool liners have a upside down J, and just hooks on the top side of the pool wall. J-Hook pool liners can also be cut to be used as a beaded receiver
EXPANDABLE OVERLAP POOL LINERS: The expandable pool liner is an overlap liner that has walls that are taller than normal to accommodate for the extra vinyl needed for a deep end or deep middle swimming area. This type of pool liner will allow up to an extra 2 feet of water depth. This is most common on round above ground swimming pools. Expandable liners can only be installed in oval pools that have no buttress straps that run across the middle. Pools with straps cannot be dug out in the middle. Unless you are a professional pool installer, expect wrinkles or folds in the pool liner after installation.