What’s a Gunite Pool?

If you’ve been researching pool options, you’ve probably come across the term gunite pool. It shows up often when people start exploring custom pool designs, but for many homeowners, the term can sound a little technical at first.

So, what’s a gunite pool?

In simple terms, a gunite pool is a type of concrete pool built by spraying a specialized concrete mixture over a framework of steel reinforcement. This process creates a strong, durable pool shell that can be shaped into almost any design.

The reason the term comes up so often is that gunite pools are the preferred choice for custom pool construction. They allow builders to create unique shapes, incorporate features like spas or tanning ledges, and design a backyard that fits the space perfectly.

In this guide, we’ll break down how gunite pools are built, why they’re so popular for inground swimming pools, and how they compare to other pool types like fiberglass and vinyl liner pools.

Key Takeaways

• A gunite pool is a type of concrete pool built with sprayed concrete over steel reinforcement, creating a strong and customizable pool shell.

• Gunite pools allow nearly unlimited design flexibility, making them ideal for custom inground pools with features like spas, tanning ledges, and water features.

• With proper maintenance, a gunite swimming pool can last for decades, making it a long-term investment for many homeowners.

What Is a Gunite Pool?

Gunite refers to a specific construction method used in swimming pool construction. The material itself is a dry concrete mix made from cement and sand. These dry materials travel through a high-pressure hose, and water is added at the nozzle right before application.

This process creates sprayed concrete, allowing builders to shape the pool directly at the job site.

The steel framework that supports the pool

Before the gunite is applied, the pool builder installs a framework of steel rebar, often called structural rebar. This steel reinforcement defines the pool’s shape and gives the structure the strength needed to support the pool long-term.

Once the gunite mix is sprayed over the rebar, it forms a thick layer that becomes the gunite pool shell.

How the gunite shell becomes a solid structure

After application, the gunite enters the curing process, where it hardens and bonds into a solid structure. This step is critical because it allows the concrete shell to gain strength and durability.

When the curing process is complete, the pool receives its interior finish, which may include plaster, pebble, quartz, or finishes blended with marble dust. This final layer creates the smooth surface swimmers see and feel.

Why builders use gunite

Because the material is sprayed directly onto the framework, gunite construction allows builders to create intricate shapes, infinity edges, tanning ledges, and water features. This level of flexibility is one reason gunite is often the preferred choice for custom inground pools.

How a Gunite Pool Is Built

Building a gunite swimming pool involves several stages, each designed to create a durable inground pool with a long-lasting concrete structure. Because gunite is applied directly at the job site, the process allows for a high level of customization throughout the pool construction process.

Excavation and framing

The first step in pool construction is preparing the space for the new pool. The pool builder excavates the area according to the planned pool design, shaping the ground to match the pool’s layout.

Once the excavation is complete, a framework of steel rebar, often called structural rebar, is installed. This steel grid defines the pool's shape and provides the structural support needed for the concrete shell.

Spraying the gunite

Next, the gunite construction phase begins.

A dry concrete mix made of cement and sand is sent through a high-pressure hose using compressed air. At the nozzle, water is added to the mixture, creating sprayed concrete that is applied over the rebar framework.

As the gunite material builds up in layers, it forms the gunite pool shell, creating a strong, solid structure that becomes the backbone of the swimming pool.

Curing the shell

After the gunite is applied, the shell enters the curing process. During this stage, the concrete hardens and gains strength.

Proper curing is essential because it helps the shell develop durability and resist long-term issues such as shifting soil or freeze-thaw cycles. The result is a stable structure that can support a variety of intricate shapes and water features.

Interior finish and tile

Once the shell has cured, the pool receives its interior finish. This layer may include plaster, pebble, quartz, or finishes blended with materials like marble dust.

Waterline tile, coping, decking, and custom lighting can also be installed during this stage. At this point, the installation process is nearly complete, and the pool begins to take on its final appearance.

From excavation to finishing details, the full construction time for a gunite pool typically takes longer than other pool types, but the result is a highly customizable and durable pool built specifically for the property.

Why Gunite Pools Are So Popular

When homeowners begin comparing different pool types, gunite pools often stand out as a preferred option. Their reputation comes from a combination of design flexibility, long-term durability, and the ability to create a truly customized backyard space.

Here are a few of the biggest reasons gunite pools remain a popular choice for inground swimming pools.

Custom design flexibility

One of the biggest advantages of a gunite pool is design freedom. Unlike fiberglass pools, which are manufactured in fixed molds, gunite construction allows builders to shape the pool directly on the job site.

This means the pool can be designed in almost any shape or size. Gunite pools can easily incorporate features like spas, tanning ledges, infinity edges, water features, and retaining walls, making them ideal for highly customized outdoor spaces.

Because of this flexibility, many gunite pool builders prefer this construction method when designing unique backyard environments.

Long-term durability

Gunite pools are known for their strong concrete shell and long lifespans. The combination of cement, sand, and reinforced steel creates a durable structure that can last for decades with proper maintenance.

Routine chemical balancing, regular cleaning, and occasional resurfacing help protect the interior finish. While gunite surfaces may develop small cracks or require refinishing over time, the underlying structure typically remains extremely durable.

High-end appearance

Another reason gunite pools are a preferred type of pool for many homeowners is their appearance. Because the pool is built on-site, it can be finished with a wide range of premium materials.

Options for the interior finish include plaster, quartz, pebble finishes, or blends containing fine particles and marble dust, creating a polished, high-end look. These finishes integrate beautifully with decking, landscaping, and outdoor living features.

While the initial investment for gunite pools is often higher than other pool types, many homeowners feel the customization, durability, and design possibilities make them well worth it.

Gunite vs. Other Pool Types

When choosing an inground pool, homeowners often compare gunite pools with other popular options like fiberglass and vinyl liner pools. Each type has its own construction method, costs, and long-term maintenance considerations.

Understanding these differences can help you decide which type of pool best fits your property and your goals for the backyard.

Gunite vs. fiberglass pools

Fiberglass pools are manufactured off-site in a mold and then delivered to the property as a single shell. Because they are pre-molded, the installation process is typically faster and often considered low maintenance.

However, fiberglass designs are limited to the shapes and sizes available from the manufacturer.

A gunite pool, on the other hand, is built directly at the job site using a dry mix of cement and sand that becomes sprayed concrete through air pressure. This construction method allows builders to create fully customized pool shapes, which is why gunite is often preferred for pools with intricate designs, water features, or infinity edges.

Gunite vs. vinyl liner pools

Vinyl liner pools use a flexible liner that sits inside the pool structure. The liner creates a waterproof barrier that holds the water.

Gunite pools are different because they rely on a permanent concrete shell rather than a replaceable liner. The gunite shell cures into a strong structure that can last for decades with proper maintenance.

While vinyl pools often have a lower initial investment, the liner typically needs to be replaced over time. Gunite pools generally have higher upfront costs but offer greater design flexibility and long-term durability.

How Long Do Gunite Pools Last?

One of the biggest advantages of a gunite pool is its longevity. When built properly and maintained over time, the structure can last for decades.

The pool shell lifespan

The gunite shell itself is extremely durable. In many cases, the concrete shell of a gunite pool can last 50 years or more. Because the shell is reinforced with steel and formed from sprayed concrete, it creates a strong structural foundation that holds up well over time.

Interior surface maintenance

While the shell lasts for decades, the interior finish will need periodic renewal. Most plaster finishes are resurfaced about every 10–15 years, depending on usage, water chemistry, and maintenance habits.

Resurfacing refreshes the appearance of the pool and helps protect the underlying structure.

The role of proper maintenance

Routine care plays a major role in how long a gunite pool lasts. Regular chemical balancing, cleaning, and inspections help prevent issues such as staining, algae growth, and surface wear.

With proper maintenance, many gunite pools continue performing well for generations, making them a long-term investment for homeowners who want a durable and customizable backyard pool.

Why Many Custom Pools Are Built with Gunite

Many builders choose gunite because it allows for greater creativity and structural strength. The material supports complex pool designs, including features like spas, tanning ledges, and water features.

Its reinforced concrete structure also provides strong long-term support, making it ideal for custom pools that integrate with patios, landscaping, and outdoor living spaces.

Building Custom Gunite Pools with Ferrari Pools

At Ferrari Pools: Custom Outdoor Living, we’ve been designing and building custom gunite pools for decades. Our team works closely with homeowners to create pools that fit both the property and the way the space will be used.

We specialize in integrating pools with complete outdoor living designs, including patios, landscaping, and custom features. We also handle pool renovations and upgrades, helping homeowners modernize older pools with new finishes, equipment, and design elements.

Beyond pools, we design and install swim spas, hot tubs, and other outdoor water features, creating backyard spaces built for relaxation and entertaining.

If you’re considering a new pool or upgrading an existing one, reach out to schedule a consultation and start planning your project with our team.

Conclusion

Gunite pools are durable, customizable, and built to last, making them a popular choice for homeowners planning a long-term backyard investment. With the right design and quality construction, a gunite pool can provide decades of enjoyment.

Frequently Asked Questions

What is a concrete pool?

A concrete pool is an inground pool built using reinforced concrete materials, such as gunite or shotcrete. These pools are constructed on-site over a steel rebar framework, allowing for fully customized shapes and long-lasting durability.

What is the typical gunite pool cost?

Gunite pool cost varies depending on factors like pool size, design complexity, materials, and added features such as spas or water features. Because gunite pools are highly customizable, they often have a higher initial investment than other pool types.

What is a gunite swimming pool made of?

A gunite swimming pool is built using a mixture of cement and sand that is sprayed over a steel reinforcement structure using compressed air. Once the material cures, it forms a strong concrete shell that becomes the foundation of the pool.

What is the difference between a gunite pool and a typical inground pool?

An inground pool refers to any pool built into the ground, including fiberglass, vinyl liner, and concrete pools. A gunite pool is a specific type of inground pool known for its durability and ability to support custom shapes and features.