What To Put Under Above Ground Pool?

Swimming Pool Tips

By Miami Pool Company

Whether you’ve decided on an above ground pool as a cost-effective alternative to in-ground installation, or you’re simply exploring different swimming pool options, one of the most important considerations is what to put under your above ground pool.

This is not just about protecting your investment; it’s about ensuring the safety and longevity of your backyard oasis.

What Can I Put Under My Above Ground Pool?

Choosing the right foundation for your above ground pool is as vital as selecting the pool itself. This choice directly impacts not just the life of your pool, but also your swimming experience. As a Miami pool enthusiast, you’re aware that the base under your pool serves crucial functions: it provides a cushion for the liner, offers puncture resistance, and maintains stability over time.

Let’s explore the options you have and what you might consider the best base for your above ground pool.

Sand: The Traditional Foundation

Sand is often the go-to choice for many pool owners. It’s heralded for its ability to create a soft bed beneath the pool, helping to smooth out the contours of the ground beneath.

This is especially useful when considering what to put under a pool on grass, as it can act as a barrier between the sharp blades and your pool liner. But while sand can be an excellent base for above ground pools, it’s not without its drawbacks.

Over time, sand can shift, especially in areas with heavy rain or wind, which may require you to level it again.

Commercial Pads: The Hassle-Free Choice

For those looking for a more straightforward installation, commercial pads are a fantastic alternative for those looking for what to put under Intex pools or Bestway pools. These pads are specifically designed as an above ground pool base to provide a high level of protection against punctures from beneath.

They are durable, often made of geotextile material, and can be tailored to fit the exact shape and size of your pool. This customization makes them an attractive option for what to put under an above ground pool, ensuring every inch is covered.

Solid Foam: Comfort and Insulation in One

If comfort is high on your priority list, then solid foam is worth considering for your above ground pool base. This material offers a smooth, cushioned layer that not only feels pleasant underfoot but also provides insulation.

This can be particularly beneficial for pools in Miami, keeping the water temperature more consistent during fluctuating weather. Solid foam is also a contender for the best thing to put under an above ground pool, as it’s less likely to shift or degrade over time.

Concrete Pads: The Permanent Solution

For pool owners looking for a long-term, maintenance-free solution, concrete pads might be the answer. This base for an above ground pool on grass or any other type of soil is the epitome of stability. It won’t erode, shift, or degrade, making it arguably the best surface for an above ground pool.

While the initial cost and effort of installation are higher, a concrete pad could be the only pool base you’ll ever need.

When pondering what to put under your above ground pool, these options offer a starting point. Whether you’re looking for the best base for above ground pool longevity, comfort, or ease of maintenance, there’s a solution tailored to your needs.

When installing an above ground pool, attention to detail will go a long way in extending its life and ensuring safe, enjoyable use. The base is critical, but there are additional considerations that can influence the condition and longevity of your pool.

The Pool Foundation Matters

An above ground pool is more than a place to cool off during the hot Miami summers—it’s a gathering spot for family and friends. But before you dive into the crystal-clear water, you must ensure the pool’s foundation is solid.

Choosing the right base for your above ground pool can prevent countless issues down the line, from punctures to uneven wear and even structural damage.

Expand the Life of Your Above Ground Pool

Properly supporting your pool with the right materials can significantly extend its lifespan. It’s not just about what looks good; it’s about what will protect the pool’s liner and frame from the ground up. Whether you choose a commercial pad, a bed of sand, solid foam, or a custom solution, the right base will save you time and money in the long run.

An above ground pool’s longevity and performance are directly tied to the quality of its base. With Miami’s unique climate and soil conditions, making an informed choice is crucial. Let’s delve deeper into the key considerations when selecting the perfect base for your above ground pool.

Level Ground: The Cornerstone of Stability

Uneven ground is the archenemy of above ground pools. It can lead to uneven water pressure, which, over time, may stress and deform your pool’s walls, leading to a shortened lifespan or even sudden collapse. Before laying any material:

  • Survey the Site: Use a leveler to check the ground. Look for dips and rises that could affect stability.
  • Preparation: Clear the area of grass, roots, and rocks. These can cause uneven surfaces and potential damage to the pool liner.
  • Compaction: Compact the soil to prevent settling. Soil that isn’t compacted can shift over time, creating a hazard.

Grading the Site: A Necessity for Proper Drainage

The contour of the land where your pool sits is a primary factor in drainage efficiency. It’s important to grade the site so that the ground beneath the pool slopes away from the structure. This ensures that any water from splashes, spills, or storms does not pool beneath the liner, which could lead to mold, mildew, or even compromise the pool’s structural integrity.

Ideally, you want water to naturally flow away from the pool, reducing the risk of damage and the need for costly pool repairs.

Landscaping: The Art of Complementing Your Pool

Landscaping can enhance the beauty of your pool area, but it’s crucial to choose the right plants and placement. Opt for species that don’t have aggressive root systems which could grow underneath the pool and potentially puncture the liner or disrupt the base.

Also, consider the type of foliage—plants that drop a minimal amount of leaves, needles, or seeds will help keep your pool cleaner. Succulents and ornamental grasses can be smart choices, adding aesthetic appeal without the messy fallout.

Chemical Exposure: Protecting Your Pool

Lawn and garden chemicals, such as fertilizers and pesticides, are great for your greenery but not so much for your pool. These substances can cause degradation to the pool materials, leading to fading, brittleness, or even leaks.

To protect your pool, establish a buffer zone where such chemicals are not used, or opt for natural, organic alternatives that are less harsh. Additionally, when applying chemicals, make sure the pool is covered, and always follow the manufacturer’s instructions regarding application near swimming areas.

The Pool Environment: An Ecosystem of Its Own

Consider your pool’s base and surrounding area as an ecosystem that requires balance. The right base provides stability and protection; proper grading ensures drainage; thoughtful landscaping adds beauty and protects the structure; and careful chemical use preserves the pool’s integrity. This ecosystem approach will help you create and maintain a swimming environment that is both delightful and durable.

When considering what to put under an above ground pool, think beyond just the base to the bigger picture of your pool’s environment. With these considerations in mind, you’ll be well on your way to enjoying your pool with peace of mind, knowing that every aspect has been addressed.


Remember, the right above ground pool base material isn’t just about what goes under the pool; it’s also about enhancing your overall swimming experience.

And if you ever decide to transition from what’s above ground to an in-ground paradise, remember that our team at Swimming Pools Miami is ready to turn that dream into reality. We’re not just about the base—we’re about creating the entire pool experience, tailored just for you. Contact us to explore the endless possibilities of custom swimming pool construction.