How Much Does It Cost to Replaster a Gunite Pool?

It usually starts with small changes. A homeowner steps into the gunite pool and notices rough spots along the floor, stains that won’t brush away, or plaster that looks faded and worn. Over time, these issues raise an important question: How much does it cost to replaster a gunite pool?

A gunite pool is built with a durable concrete shell designed to last for decades. However, the plaster layer that forms the interior pool surface naturally wears down as it’s exposed to water, chemicals, and regular use. When that finish begins to age, replastering becomes an important step in maintaining the pool.

Replastering replaces the worn surface with new plaster, restoring the pool’s appearance and helping protect the underlying structure. In many cases, it’s a practical way to extend the life of the pool while improving comfort and visual appeal.

In the sections ahead, we’ll explore how much it costs to replaster a gunite pool, what factors influence the overall price, and what homeowners can expect when planning a pool replastering project.

Key Takeaways

• Replastering typically costs $6,000–$15,000 depending on pool size and finish type.

• The material you choose has the biggest impact on the final cost.

• Replastering restores the pool surface and helps protect the gunite shell for years to come.

What Replastering a Gunite Pool Is

Before looking at the pool resurfacing cost, it helps to understand what replastering actually involves. A gunite pool is built with multiple layers, and replastering focuses on restoring the interior surface that swimmers see and feel.

The finish layer vs. the pool structure

Every concrete pool has a strong structural shell made from gunite. This shell forms the pool walls and floor, providing the strength that allows the swimming pool to hold water and maintain its shape for decades.

On top of that shell sits the plaster finish, which creates the smooth pool surface. This finish layer may be made from standard white plaster, quartz blends, or other available finishes that improve durability and appearance. Over time, exposure to water, pool chemicals, and regular use can cause the pool's finish to develop surface stains, rough spots, or discoloration.

Replastering removes the worn finish and installs new plaster or another selected surface material. The entire process focuses on restoring the pool interior while keeping the original structure intact, helping maintain the structural integrity of the pool.

Because every pool is different (pool size, shape, and materials) the average cost to replaster can vary widely from one project to another.

Average Cost to Replaster a Gunite Pool

The average cost to replaster a gunite pool can vary depending on the pool size, finish material, and the condition of the existing surface. However, most homeowners can expect a general price range based on the square footage of the pool.

Typical cost range

For a standard plaster finish, the cost typically falls between $4–$7 per square foot. For many residential pools, that usually results in a total cost between $6,000 and $15,000, including labor costs, materials, and basic preparation.

Example for a typical pool

To give a general idea, a 16×32 pool often has roughly 1,000 square feet of interior surface area. Replastering a pool of that size with standard plaster may cost around $5,000–$8,000, depending on the condition of the pool’s finish and the materials required.

Premium finishes increase the price

The overall cost can increase if homeowners choose premium materials such as quartz blends, pebble finishes, or decorative glass tiles. These upgrades can create a more durable option and a more attractive surface, but they also raise the price per square foot.

Additional work such as minor repairs, replacing pool tiles, or addressing surface damage can also add to the associated costs of the pool resurfacing project.

Because every pool has different conditions and unique requirements, the final price can vary widely depending on the project details.

Factors That Affect Replastering Costs

The cost to replaster a gunite pool can vary significantly depending on several factors. Pool size, materials, and the condition of the existing surface all influence the overall cost of the project.

Pool size

One of the biggest cost factors is the pool size. Larger pools require more materials, more labor, and additional time to complete the project.

Because replastering is often priced per square foot, a bigger pool naturally increases the total price of the job.

Surface material

The type of finish selected can also affect the final price. Different materials offer different durability levels, appearance, and lifespan.

Typical options include:

• Plaster – the most cost effective option for many pools

• Quartz aggregate – a mid-range material that improves durability

• Pebble finishes – a more durable surface with a textured appearance

• Tile finishes – a premium option with the highest material average cost

Depending on the plaster type or finish selected, resurfacing can range from about $4 to $30+ per square foot.

Condition of the existing surface

The pool's condition also affects the price. If the existing plaster is cracked, hollow, or damaged by algae growth, additional preparation work may be needed before professional installation of the new finish.

These repairs, surface preparation steps, and extra labor can add to the estimated cost.

Additional renovations

Many homeowners choose to upgrade other parts of the pool area while replastering is already underway.

Common upgrades include:

• Tile replacement

• Lighting upgrades

• Equipment improvements

• Deck repairs

These add-ons increase the overall cost, but they can improve the pool’s appearance, performance, and maintenance needs in the long run.

Cost by Pool Finish Type

One of the biggest factors affecting the average price of a replastering project is the type of finish used. Different materials offer different durability levels, appearance, and lifespan.

Traditional plaster

Traditional pool plaster is the most common and affordable option. Most homeowners pay around $4–$7 per square foot for this finish.

With proper pool maintenance, a standard plaster surface typically lasts 7–10 years before it may need resurfacing again. It’s a practical choice for homeowners looking for a clean, smooth pool surface at a lower cost.

Quartz aggregate

Quartz finishes combine plaster with crushed quartz particles, creating a stronger and more stain-resistant surface. These finishes usually cost $5–$10 per square foot.

Because quartz is more durable than standard plaster, it can often last 10–15 years when properly maintained.

Pebble finishes

Pebble finishes are known for their durability and natural appearance. These surfaces typically cost $7–$15 per square foot depending on the materials and design.

Pebble surfaces can last 15–20 years or more, which means many homeowners find they require less frequent replastering over time.

Tile finishes

Tile interiors are considered a premium option and can cost $25 or more per square foot. The higher price reflects the materials, additional labor, and careful installation required by licensed contractors.

While tile finishes come with higher costs, they can last 20 years or longer, making them one of the most durable long-term pool interior options available.

When Replastering a Gunite Pool Is Worth the Investment

Replastering isn’t something most homeowners do often, but there are certain situations where it becomes the best solution for maintaining the pool.

Rough or uncomfortable pool surface

Over time, the plaster finish can wear down and develop a rough texture. When the pool surface begins to feel abrasive on feet or hands, replastering can restore a smooth, comfortable finish.

Widespread staining or discoloration

Some stains can be treated with cleaning or chemical adjustments. However, when discoloration spreads across the entire pool surface, it often means the finish layer is aging and needs to be replaced.

Aging pool plaster

Most plaster finishes last about 10–15 years depending on maintenance and water chemistry. When the finish reaches this stage, replastering helps restore the surface and maintain the pool’s performance.

Cosmetic upgrades during renovations

Many homeowners choose to replaster as part of a larger pool renovation. Installing a new finish can refresh the pool’s appearance while giving the entire backyard space an updated look.

Beyond improving appearance, replastering also helps protect the underlying gunite shell.

Replacing the worn finish layer helps preserve the structure of the pool and extend its lifespan for many years.

Replaster and Renovate Your Gunite Pool

Ferrari Pools: Custom Outdoor Living has spent decades building and renovating gunite pools for homeowners who want lasting quality and thoughtful design. Our team understands how these pools are constructed and how to restore them properly when the interior finish begins to wear.

We also help homeowners select the right resurfacing materials based on durability, appearance, and long-term maintenance goals. Whether you prefer a traditional plaster finish or are considering upgraded materials, we guide you through the available options.

If your pool surface is showing signs of wear (need inspection?) or you’re planning a renovation, our team is here to help. Contact us to schedule a consultation, and we’ll help you plan the best approach for restoring and upgrading your pool.

Conclusion

Replastering a gunite pool is a significant project, but it’s also one of the most effective ways to restore the appearance, comfort, and performance of an aging pool. With the right materials and professional installation, a new plaster finish can protect the pool structure and keep it looking great for many years.

Frequently Asked Questions

How often should a gunite pool be replastered?

Most gunite pools need replastering every 10–15 years, depending on the finish type, water chemistry, and overall maintenance.

Is replastering cheaper than resurfacing a pool?

Replastering is actually one form of pool resurfacing. Basic plaster finishes are usually the most affordable resurfacing option compared to quartz, pebble, or tile finishes.

How long does pool replastering take?

Most replastering projects take about 5–7 days, depending on the size of the pool, the finish selected, and whether additional repairs are needed.

Can you swim right after replastering a pool?

No. After replastering, the pool must be refilled and the water chemistry carefully balanced before swimming. This startup process helps protect the new surface and ensures the plaster cures properly.