How to Install a Pool Liner

A plain, step-by-step look at how a vinyl liner goes into an inground pool, and where most problems start.

Pool Builders Directory · October 25, 2026

To install a pool liner, you drain the pool, remove the old liner, repair the walls and floor, hang the new liner on the track, pull it tight with a vacuum, and refill the pool. The work is exact, and a small mistake shows up as wrinkles.

This guide covers vinyl liners in inground pools. Concrete (gunite) and fiberglass pools do not use a loose liner. If you are still planning a pool, this also shows what a liner pool needs over the years.

The steps, in order

1. Measure and order the liner. A liner is made to fit your pool's exact shape and depth. Measure the length, width, and depth at several points, or have the supplier measure. Check your measurements twice before you order.
2. Pick a dry, mild day. Plan for a calm day without rain. Vinyl is stiff when cold, and it is easier to fit when it is warm.
3. Drain the pool and remove the old liner. Pump out the water. Take the old liner out of the track along the top edge, then cut it into pieces and haul it away. Do not drain the pool if the ground is very wet. High groundwater can push the shell out of place.
4. Repair the walls and floor. Check the wall panels for rust or bends. Fix or smooth any rough spots. The floor base is often sand or a cement mix. Repair low spots and make it smooth, because the liner will show every bump.
5. Check the fittings and the track. Look at the skimmer, return fittings, and light niche. Replace worn gaskets. Make sure the liner track along the top is clean and straight.
6. Hang the new liner. Lay the liner out, line up the corners and the bottom seams, and snap its bead into the track along the top. Work from the center of each side toward the corners. Keep the floor seams straight.
7. Pull the liner tight with a vacuum. Put a shop vacuum hose behind the liner. The suction pulls the vinyl flat against the walls and floor. Keep the vacuum running while you fix any wrinkles by hand.
8. Start filling the pool. Add a few inches of water while the vacuum runs. Smooth out any wrinkles as the water spreads. When the water is deep enough to hold the liner in place, you can stop the vacuum.
9. Cut in the fittings and finish filling. Once the water is near the fittings, cut the liner open at the skimmer, returns, and light. Then bolt on the faceplates and fill to the normal level.

How much does it cost to install a pool liner?

Cost varies by pool size, liner thickness, pattern, and local labor rates. Prices are typically a few thousand dollars for a new liner installed by a pro.

The liner itself is only part of the bill. Wall repairs, a new floor base, new fittings, and water to refill the pool can add to the total. Ask for a written quote that lists each of these. Quotes in your area are the only numbers worth trusting.

Can you install a pool liner yourself?

Yes, some handy owners do it, but it is hard to do well. The work needs several people, a dry pit, and a good eye for smooth surfaces.

Hard parts include getting the liner seated evenly and pulling out every wrinkle before the water gets deep. A liner that is set wrong is hard to fix once the pool is full. If you try it, plan on helpers and set aside a full day or more.

Can you install a pool liner in the rain?

It is best not to. Rain puts water in the pit and on the floor, and the liner needs a dry, clean base. Wet sand and mud lead to lumps and wrinkles.

Very cold weather is also a problem because vinyl gets stiff and does not stretch well. Heat can make vinyl soft and hard to handle. Mild, dry weather works best.

What can go wrong?

Most liner problems start before the liner goes in. A few to watch for:

• Wrong measurements. A liner that is too small or too large will not fit well, and it may not be returnable because it is made to order.
• A rough floor. Bumps and low spots show through the vinyl and can wear it out sooner.
• Wrinkles. They form when the vacuum is turned off too soon or the liner is not centered.
• Groundwater. If the ground is very wet, a drained pool can lift or shift. Ask a pro before you drain.
• Skipping repairs. A new liner over a rusted or bent wall will not last long.

When should you call a pro?

Call a pro if you see wall damage, a floor that is uneven, signs of groundwater, or a complex pool shape. Also call one if you do not have helpers, because this is not a one-person job.

A good installer measures your pool, checks the walls and floor, and explains the plan. Get more than one quote, and ask what is covered if wrinkles or leaks show up after the pool is filled. Keep the written quote and any warranty paperwork.

What if you are still planning a pool?

If you are planning a new inground pool, the liner is one reason to compare pool types. A vinyl liner pool usually costs less to build, but the liner has to be replaced from time to time. Gunite and fiberglass cost more up front and do not need liners.

Ask each builder how long a liner usually lasts in your area, and what a replacement would involve. That helps you compare the long-term cost, not only the build price.