How to Fill Gap between above Ground Pool And Deck

You have just finished your deck installation and find leave a gap between above ground pool and the deck. Or maybe you have just noticed the gap and thought that somebody might catch his toe in it. You need to know How to Fill Gap between above Ground Pool And Deck?

You can use vinyl extrusions (called industrial type), plastic extrusion, or caulk to fill the gap. Using a rubber or foam extrusion can be another good option. Foam sealant should work too, if the gap is small.

But how to use them? Well, we are here to help. We will discuss everything to show you how to fill the gap between the house and the deck. Stay with us until the end, and don’t miss a single step.

Here is How to Fill Gap between Above Ground Pool And Deck

Let’s see everything in detail about how to fill the gap between the pool and the deck.

First thing first: understanding the problem

Before you start filling the gap, it’s important to understand the root cause of the issue. The gap between the pool and the deck is caused by the settling of the pool or the heaving of the deck. 

When the ground under the pool or deck shifts, it creates a gap that can be anywhere from a few inches to a few feet. This gap can be a safety hazard, especially for children or pets who might accidentally fall into it.

Step 1: Measure the Gap

Begin by measuring the gap between your above-ground pool and deck. Use a measuring tape to determine the width and depth of the space. Jot down these measurements, as you’ll need them to select the appropriate materials for filling the gap.

Step 2: Choose the Right Material

Select a suitable material to fill the gap. Popular options are

  • Vinyl extrusions (called industrial type)
  • Plastic extrusion
  • Caulk
  • Rubber or foam extrusion
  • Foam sealant (for small gaps)

Step 3: Prepare the Area

Before installing your chosen material, clean the area thoroughly to ensure proper adhesion. Remove any debris or dirt from the gap and the surrounding surfaces. If necessary, use a brush and mild soap solution to clean stubborn spots.

Step 4: Cut and Fit the Material

Using your measurements from Step 1, cut the chosen material to fit the gap. Be precise with your cuts to ensure a snug fit. It’s always better to cut slightly longer pieces, as you can trim them down if needed.

Step 5: Install the Material

Carefully place the material into the gap, making sure it fits snugly and securely. Depending on the chosen material, you may need to use adhesive, screws, or other fasteners to keep it in place. Follow the manufacturer’s recommendations for the best results.

Step 6: Seal the Edges

To prevent water intrusion and enhance durability, apply a waterproof sealant along the edges of the gap filler. Choose a sealant that’s compatible with your chosen material and follow the application instructions provided.

Step 7: Inspect and Maintain

Regularly inspect the gap filler to ensure it remains in good condition. Over time, you may need to replace or repair the material. By keeping an eye on it, you’ll be able to address any issues before they escalate.

By following these steps, you can effectively fill the gap between your above ground pool and deck, creating a safer and more visually appealing pool area. With a bit of effort and the right materials, your backyard oasis will be the talk of the neighborhood.

Caulking Around Your Swimming Pool

  • Remove any existing decking material from around the pool, using a crowbar or pry bar if necessary
  • Inspect the area for any large cracks or gaps in the concrete, and fill them with concrete patching compound as needed
  • Spread a layer of construction adhesive onto the top of the pool coping, using a notched trowel
  • Place pressure-treated lumber boards around the perimeter of the pool, aligning them with the edge of the coping
  • Hammer nails into the boards at an angle, through both the board and into the coping to secure them in place temporarily while you work
  • 6a)
  • For a smooth deck surface: Measure and cut pieces of 1/4-inch plywood to fit over each section between two boards, then screw them into place with deck screws driven through pre-drilled pilot holes; OR 6b)
  • For a textured deck surface: Use a utility knife to score lines across each piece of plywood before attaching it to create a wood plank look; then finish by caulking all joints and seams with silicone caulk designed for use around pools

How Much Space Should Be between above Ground Pool And Deck?

If you plan to add an above-ground pool to your backyard, one of the first things you’ll need to figure out is how much space to leave between the pool and your deck. The amount of space you’ll need will depend on a few factors, such as the height of your deck and the type of pool you’re installing. In general, however, you should leave at least 4 feet of clearance between an above-ground pool and a deck.

This will give you enough room to walk around the pool and avoid any accidental falls into the water. If your deck is above 4 feet off the ground, you may need to increase the distance between the two structures. This is because raised decks can provide a false sense of security when people near an open water body.

If someone were to fall from a raised deck into an above-ground pool, they could seriously injure themselves. For this reason, it’s always better to err on the side of caution and give yourself plenty of space between an above-ground pool and any elevated surfaces.

Where Should a Deck Meet an Above Ground Pool?

If you have an above-ground pool and are wondering where your deck should meet it, there are a few things to consider. First, you will want to ensure the deck is stable and level. You don’t want your deck to collapse into the pool!

Second, you will want to ensure enough space between the deck and the pool so that people can comfortably move around. Finally, you will want to ensure the deck doesn’t block any of the pool’s features, such as the ladder or steps.

Should a Pool Deck Be Higher Than the Pool?

There is no one answer to this question since it depends on a variety of factors, such as the height of the pool, the surrounding deck area, and the homeowner’s personal preference. In general, however, most people find that having a pool deck that is slightly higher than the pool itself makes it easier to get in and out of the pool. A higher deck can also provide more privacy since people will be less likely to see into the pool area from outside.


Learning how to fill the gap between your above ground pool and deck is a crucial step toward a safer and more attractive outdoor space. With our guide, you can tackle this DIY project with ease.

By selecting the right materials and following our step-by-step instructions, you’ll effectively eliminate tripping hazards and enhance your pool area’s visual appeal. Your backyard oasis will become a welcoming retreat for family and friends.

So, don’t wait any longer to tackle this project. Transform your poolside experience and enjoy the benefits of a seamless, polished transition between your above-ground pool and deck.

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