This guide is Part 4 of a series on installing a basic steel Above Ground Pool. It shows you how to install an overlap pool liner in an Above Ground Pool. We assume that you have completed Part 3 - installing floor covering and coving. These instructions may vary according to your pool model so consult your owner's manual for any variations.
Slide the liner out of its box. Use caution when opening the box that you don't cut the liner.
When you are done positioning the liner, you should have a foot or so overlap around the outside of the wall. Also the liner's seam between the floor and the wall should be positioned so that it is in the center of the coving all around the pool. If you need to enter the pool to position the line, use your pool ladder and stocking feet.
Now lift the liner so that it is about 2" off the floor. Using 4' lengths of duct tape temporarily tape the liner overlap to the outside wall. Secure the liner at several points around the outside wall. Measure the diameter of the pool at several points once more to make sure its in round. Make adjustments by nudging the bottom rails at the bottom plates. Once you start filling the pool with water, you will not be able to move it.
Start filling the pool with water. As it fills, it will stretch to the floor removing any wrinkles. Adjust the duct tape on the sides to lower and relieve any pressure on the liner as the pool fills. Continually check that the corner seam of the liner remains at the center of the coping all around the pool. Any wrinkles in the floor must be removed before the water level reaches 3'. At this point the weight of the water will prevent any further movement of the liner on the floor. Stop filling at the pool at 3".