Liners come in a lot of different themes, patterns and colors. Thicknesses of the liner material varies as well. Thicker and heavier liners last longer than thin material, and are measured in either gauge or millimeters. Liner is not a permanent addition and is attaches to the swimming pool, therefore can be removed for repair or replacement.
Pool liners are made from colorized chlorinated PVC thermoplastic vinyl. This vinyl material is durable, easy to manufacture, and economically priced.
Virgin vinyl is molded of thicker sheeting, allowing it to have a greater resistance to stretching, tearing, and puncturing, meaning it will last much longer without any problems.
There are two types of seams on liners, which are traditional and lapped:
Traditional seams are basically the same type of seam that you see on most clothing items, where two pieces are joined, sewing the edges together. While this process works excellent with clothing items, under constant pressure from thousands of gallons of water it can easily separate.
Lapped seams overlap at the edge, allowing for a much stronger bond, and also minimizing any chances of leaks or separation.pool liner: overlap liners, beaded liners and unibeaded liners.
Overlap liners offer the lowest cost and most popular type of pool liners today. They are, however, severely limited in terms of the colors and patterns available. They are easy to install, and can be installed without using any tools or special equipment. However, once they are installed they are rather difficult to remove and replace.
Beaded liners sit in the middle when it comes to price and popularity. They offer easier removal and replacement, with no cutting needed. They also offer a wider range of colors and patterns, and connect easily to an adapter on the outside edge of the pool.
Unibead liners are the most versatile liners available today because of their ability to be used on a U/J hook application or beaded applications. They are also very easy to remove, because they can be removed without having to take off the top rail or decking of your pool, which can save you valuable time and frustration.