How to Install a Unibead Liner

Learn how to install a Unibead liner on an above ground pool by following our guidelines in this article.

How to Install a Unibead Liner

How to Install a Unibead liner

This liner is made using Swimline’s Unibead Liner System. It can be used as a Beaded Liner in a pool that uses a Bead Receiver or as a J-Hook Liner in a pool that does not use a Bead Receiver. This article covers the J-Hook installation method.

J-hook liners have a special attachment that is referred to as the “J-hook”.

Swimline’s Unibead Liner System

The J-hook is pre-attached by the liner manufacturer to the top of the liner and hangs directly on the top of the pool wall when installed. Since it is custom fit for the height of the pool, with the proper amount of sand on the ground surface, there will be no need to adjust the liner height during installation.

Unibead Liner Installation Video

All above ground pools call for 3”- 4” of sand to be leveled after the wall has been erected and an additional cove or angle of sand against the pool wall before the liner is inserted. Foam cove can also be installed on top of the 3”-4” sand base. This will give you a total height of approximately 7” of sand (or sand/foam cove combination) at the base of the pool wall.

Base for Above Ground Pool Liner

Spread out the liner. The curved seam should be centered on the cove at the base of the wall. The other seams will form straight lines across the bottom of the pool. Smooth out all wrinkles in the bottom. Smooth out the floor of the liner by pushing it toward the pool wall. A soft push broom will be very helpful. Never forcefully pull or drag the liner.

There should be NO AIR SPACE between the liner and the base that it’s resting on, especially at the cove area (where the pool wall and the angled sand base meet). If you installed the foam pool cove on top of the 3” sand base and noticed there is still air behind the liner it’s recommended to add additional fine mason sand to help reduce the stress and tension on the vinyl liner and the pool wall.

Correct Liner Installation
Incorrect Liner Installation

Hooking the Liner on the Wall

Now you are ready to attach the wall of the liner to the pool. You should attach the liner to the wall in about 6 or 8 places. If you have an oval pool, start at the beginning of each radius (curved side) in 4 places and then in the center of the two radius areas and straight sides.

Hooking the Liner on the Wall

On round pools, begin at the 12, 3, 6 and 9 o’clock positions. Use masking or electrical tape, if necessary, to hold the liner in place. Make sure that you attached the wall perpendicular to the floor of the pool. Then, from any two positions, work the liner onto the wall to the center. Continue until you have the liner over the wall. If you do not attach the wall in this manner and begin from one location and your wall completely around the pool, one of two situations will exist. Either you will have an excess of material or flap on the circumference of the wall or you will be short and have to stretch the material to make it fit

Round Pool liner installation diagram
J-hook liners

Make sure the liner is hanging straight down from the top of the wall. The liner should not have creases in it because it is twisting around the pool. If the liner is twisting, it is because it is not sitting properly in the pool. Make necessary adjustments before proceeding.

Start filling the pool with only a few inches of water. As the pool fills, work out all the wrinkles and smooth the liner to the wall. If you notice that the liner is starting to severely pull or bend the pool wall inward as its filling, immediately stop filling up the pool. At this point it’s a good idea to drain the water from the pool in order to pull back the liner and add mason sand to the cove area. Adding mason sand to the cove area will help alleviate the unwanted stress on the pool wall and the liner. You can also add mason sand on top of the foam pool cove.

Pool Cove (Foam)

Pool Cove is foam that easily peels and sticks to the inside base of the pool wall. The foam pool cove is 3-3/4 inches high and must be installed on top of 3 inches of sand. This will give you a total height of about 7 inches, the recommended height to support the liner and eliminate stress at the seam of the pool liner.

Shop Products
Pool Cove

About The Pool Factory

America’s Above Ground Pool Experts – is the best place to find everything you need to make owning a swimming pool or spa fun and easy, at the best prices today. With a combined 50+ years of experience The Pool Factory employs a highly trained staff of above ground and semi inground pool specialists. The Pool Factory can provide unique solutions for all pool supplies and swimming pool needs.