Above Ground Pool Liner FAQs

Thinking about replacing your above-ground pool liner? Here are the most common questions people ask, answered simply and clearly. If you're trying to decide which liner is right for you, this FAQ will help.

What are the different types of above-ground pool liners?

There are three main types of liners:

• Overlap liners: Drape over the pool wall and are secured with coping strips. They're versatile and often more affordable.
• Beaded liners: Snap into a track around the top of the pool wall, offering a sleek, uniform appearance.
• Unibead liners: Also called J-hook liners, they can install as either overlap or beaded, offering flexibility.

How do I choose the right size liner for my pool?

Measure your pool’s diameter (for round pools) or length and width (for oval pools) from wall to wall, just below the top rail. Also, measure the wall height. Accurate measurements are key to preventing wrinkles and extending the liner's life.

What thickness should I look for in a pool liner?

Liner thickness is typically measured in mils. A 20 mil liner is common, while 25 mil liners are more durable and better for heavy use. Thicker liners offer better puncture resistance but can be slightly harder to install.

When is the best time to install a pool liner?

Install your liner on a warm, sunny day—ideally between 70°F and 85°F. The heat softens the vinyl, making it more flexible and easier to stretch into place without wrinkles.

Can I install a new liner myself, or should I hire a professional?

You can install it yourself if you’re comfortable with the process and have help. It involves draining the pool, removing the old liner, prepping the base, and carefully fitting the new liner. For large or custom-shaped pools, a professional might be the better choice.

How long do above-ground pool liners typically last?

With good care, liners can last 5 to 9 years. Sun exposure, chemical balance, thickness, and wear all affect lifespan. Using a cover and keeping water chemistry balanced helps extend durability.

What causes wrinkles in a pool liner, and how can I prevent them?

Wrinkles can happen from poor installation, water imbalance, or shifting ground. Prevent them by:

• Leveling the base before installation
• Installing the liner on a warm day
• Using a vacuum to remove air between the liner and wall during setup

What accessories are recommended when replacing a pool liner?

Consider these:

• Pool cove: Prevents liner slippage and protects against corrosion
• Wall foam: Adds insulation and a layer of comfort
• Liner pad: Protects the bottom of the liner from debris and punctures

How do I maintain my pool liner to extend its lifespan?

• Keep water chemistry balanced
• Remove debris and avoid sharp objects
• Clean the liner regularly with a soft cloth
• Use a pool cover when not in use to protect from UV and weather

👉 View AquaDoc's selection of above-ground pool liners

Need help choosing the right pool liner? Contact our team or browse our collection of durable and stylish liners.