How To Build A Concrete Slab For Above Ground Pool

How To Build A Concrete Slab For Above Ground Pool
  • Author: Amanda Arnold
  • Posted On: October 5, 2022
  • Updated On: August 21, 2023

As long as the surface is level, installing an above-ground pool on concrete is wonderful. Most of the concrete patio slabs in backyards are poured at an angle to allow rainfall to run off them. Because of this, installing an above-ground pool on them is challenging.

An above-ground model is an excellent alternative to a built-in pool if you lack the funds or room. These pools are frequently placed directly on the ground by homeowners who decide to construct one, however, setting them on a concrete pad is preferable. A pad that has been built properly is consistently flat and level.

Additionally, a concrete pad keeps the pool’s foundation above the earth, reducing mold and moisture damage. The pad must meet a few conditions, although these are common sense standards that apply to most concrete projects.

Benefits Of Concrete Slab For Above Ground Pool

A concrete slab constructed properly can bear a lot of weight, including that of a house or swimming pool. To prevent damage to the pool floor, having a soft surface is a good idea. Soft vinyl liners are used in above-ground pools, and the floors are susceptible to damage from hardened concrete surfaces.

Before constructing a concrete slab floor, insulation should be used to increase the floor’s energy efficiency and comfort. While you can put insulation over a concrete slab, doing so necessitates the addition of wood subflooring and other materials, which raises the project’s cost and complexity.

Insulate A Concrete Floor Before Pouring

The same tools and skill set are needed to mold and pour the concrete slab and provide insulation beneath the concrete floor. Excavate the area beneath the slab to a depth of 12 inches beneath the slab’s intended top level. This gives space under the slab for filler and insulation.

The excavation was filled with gravel. This layer of rock is where any wiring or plumbing pipes under the slab go. Rake the gravel level over the entire floor area. Place a layer of plastic on the floor. As a vapor barrier, the plastic prevents moisture from rising through the gravel and onto the concrete floor above.

The inside borders of the shape should be insulated. Construct the forms in each dimension to account for this. Sand should be leveled off the insulation with a rake. Add any reinforcing rod or reinforcing wire over the top of the sand.

On top of the sand, pour the concrete. Before using a screed, a straight board, to run across the top edge of the forms to level the concrete, use shovels and rakes to level the concrete. Smooth out the concrete with a trowel.

A Concrete Slab Protects The Pool From Rain And Snowmelt

Contrary to popular belief, a swimming pool must be protected against water, especially at the base. The quantity of water in the pool forms a sheltered habitat under the pool for mold to grow when the pool is buried directly in the ground where water runoff and snowmelt naturally penetrate.

Mold can deteriorate the vinyl liner in addition to causing unhygienic circumstances for children playing around the pool.

When the pool is placed on a pad, snowmelt and rainwater can drain off the concrete instead of going underneath the pool. Additionally, water naturally flowing in the yard will flow around the slab instead of running under the pool.

Above Ground Pool Must Be Flat

It’s essential to level the ground where you want to put an above-ground pool. One installation claims a difference of more than 2 inches between the sides of the pool. It can cause a sizable amount of pool water to be sloshed out. A discrepancy of more than 2 inches is unacceptable and will likely cause pool damage quickly.

Building a level concrete pad is simpler than leveling bare dirt. Fresh concrete will balance itself on a base that might not be level because it is a liquid. New concrete automatically flattens itself under its liquidity, removing the potential for protrusions that could puncture the liner.

Reasons To Install Above Ground Pool on Concrete

  • A concrete pool bottom is nicer than an earth bottom
  • Nutgrass cannot grow through concrete
  • Moles cannot cause ruts in concrete
  • The earth’s shifting, decomposing roots, horned-nosed beetles, termites, and ants can’t affect a concrete bottom.
  • Concrete doesn’t wash away

Bottom Line

For individuals who wish to enjoy the cool summer waters without lengthy building times, high prices, and time-consuming maintenance, above-ground pools are a fantastic option.

However, just because above-ground pools can make things simpler and more affordable does not imply that they are required in the absence of guidelines or standards.

Follow a few general guidelines to ensure that your above-ground pool lasts as long as possible. Above-ground pools shouldn’t just be supported by concrete. These flat concrete slabs typically act as a protective framework to stop moisture accumulation and the growth of mold.

Avatar photo
Author: Amanda Arnold

Amanda has been working with ConstructionHow since 2021. Her experience spans over 5 years in the creative niche such as home decor and trends, landscaping, renovations, and custom architectural values. As a home designer expert, she has a keen eye for the latest home improvement trends with accurate facts that readers find impossible to ignore. Being invested in home-building trends is how she has gained her lucrative expertise exploring more to bring a positive ambiance for all homeowners (and even tenants!). Currently, she lives in a beautiful beach home, a source of fascination for her.