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How To Measure for a Liner In Your Aboveground Pool

Measuring your pool for a new liner is a simple process. There are generally a few things we need to know so the correct liner can be delivered to you.


Shape: Is your pool Round, Oval or Rectangular?
Depth: What is the height of your wall?
Fastening: How is the liner attached to the pool wall?


On a Round pool you simply get a measuring tape and take 2 measurements. Go from inside the pool at the bottom of the wall and measure directly across to the other side at the same height. Do this in two locations in the pool so you get the same measurement. We like to measure at the bottom of the wall in case the wall is not plumb from side to side. The wall at the bottom track location is your safest bet.



On an Oval pool you do the same thing as a round except that you do it in the middle of the pool from side to side and at the ends at the longest point from end to end. All measurements are from inside the pool touching the wall at the base.



On Rectangular pools like a Kayak® you measure from side to side and end to end in the middle location of the corresponding rectangle. In rectangular pools we also need to know the corner shape. Is it square 90-degree corners, radius (rounded) corners, or diagonal (45 degree) angle corners? We need to know the measurement of the radius and the diagonal to better fit your liner.



Depth of the pool can range from 36" to 54" deep. Most liners are for 48" or 52" sidewall pools. Our manufacturers also make provisions for the dirt, sand, wedge, or pool cove that is needed at the base perimeter inside the pool. If your pool has water in it measure out at least 2 ft. from the sidewall with a measuring tape to the point at the top of the wall or where the liner is attached. Bear in mind that most round liners are made to be flat bottom and not a deeper middle. If your pool has a deeper area please contact one of our representatives to discuss.



Some liners are what we call overlap. This type is the most common and simply folds over the corrugated metal wall and drapes down on the outside of the wall. The liner is held in place by plastic coping strips. You may wish to replace these if your old ones are brittle and dry.



Beaded liners have a thick-formed extrusion at the top that hooks into a female receptor around the top of the pool wall on the waterside. Some brands of pools use a special bead that we can make for you as a special. Most pools can utilize the standard bead that is common in the industry. Call us if you feel you need more assistance. If you want, mail us a small piece of this bead and we can tell you instantly what you need. Better to be safe than sorry. Incidentally, you can change your overlap liner to accept a beaded liner by simply adding bead receiver strips to the order. This way, if you need to change the liner in the future, you do not have to remove the top seats of the pool. This is a real timesaver and is much easier to reinstall.



J-Hook-V-Bead are liner types that have a thicker open flap top that inserts over the corrugated metal wall. It looks likes the plastic coping we use to hold an overlap liner over the metal wall except that, in this case, it is attached to the top of the liner. If you are using an overlap liner and your pool is a flat-bottom, you can use the V-Hook or the J-Hook type liner.


Looking for a great-fitting beaded Liner that's easier to install? Shop our new Unibead Aboveground Liners - they work equally well with both J-Hook (V-Bead) and Hung-Bead liner styles!


Note: This information is intended to answer many questions you may have regarding the type and size liner you may need. SPP cannot be held responsible if you purchase the wrong size, shape, depth, or type liner. The best way to make sure you are getting the right liner is to talk to us at our toll-free # 800-983-7665. We're happy to help!


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