Vinyl liners are commonly used in both in-ground and above-ground pools because they're a relatively inexpensive yet durable option. If you have a vinyl pool liner, however, there are still some special steps that you should be taking to keep it looking like new and to ensure that it lasts for many years to come without the need for repair or replacement.

DO Use Liquid Chlorine

When it comes to chlorinating your pool, stick with liquid chlorine rather than solid chlorine tablets or "pucks." While liquid chlorine does cost a bit more and needs to be added to the pool more frequently, it's better for your liner and will distribute more evenly in the water. If you use chlorine tablets, which are tossed into the pool and sink to the bottom, you run the risk of discoloring your vinyl liner at the point where the tablet lands. If you must use a chlorine puck (such as to maintain chlorine levels while you're out of town), try setting it in a chlorine dispensing device, which will float at the top of the water and protect your liner.

DO Scrub the Water Line

Another important aspect of keeping your vinyl pool liner in great shape is taking the time to scrub along the pool's waterline on a regular basis. This will prevent the buildup of minerals and other debris along the line, which can stain and discolor the liner. Maintaining the waterline is simple; all you need is a sponge and a little bit of elbow grease. No soap or other cleaners should be necessary, so long as you do this regularly.

DON'T Drain More Than Necessary

Finally, if you ever need to drain water from your pool (such as when closing it for the winter), never drain it more than recommended in your pool's owner manual. If you drain your pool too much, the vinyl liner can easily shrink (especially if exposed to sunlight). This will make it much more prone to cracking and peeling away once it comes time to refill your pool. In most cases, you should never drain your pool's water level more than a few inches below the skimmer line. If for any reason you do need to drain your pool completely, contact a pool professional to make sure that it's done right and that any damage to your vinyl liner is minimized as much as possible. One company to contact for more information is Aquatic Builders.