How Do You Resurface a Gunite Pool?

It often starts with something small. A homeowner steps into the gunite pool and notices the pool surface feels rough underfoot. Maybe a few stains along the steps won’t brush away like they used to, or thin cracks begin appearing near the shallow end. These changes are common as pools age, but they often lead to the same question: How do you resurface a gunite pool?

A gunite pool is built around a strong concrete shell designed to last for decades. What swimmers see and feel, however, is the finish layer that sits on top of that structure. Over time, exposure to pool chemicals, water, sunlight, and regular use gradually wears down that surface.

The good news is that resurfacing can restore the pool without rebuilding the entire structure. The process replaces the worn finish layer, helping the pool look better, feel smoother, and continue performing the way it should.

In the sections ahead, we’ll take a closer look at resurfacing a gunite pool, what happens during the resurfacing process, and how to tell when it might be the right time to consider it.

Key Takeaways

• Resurfacing replaces the worn interior finish of a gunite pool while keeping the structural shell intact.

  
  

• The process typically involves draining the pool, removing the old surface, and applying a new finish.

  
  

• Resurfacing can extend the life of the pool and restore its appearance for many years.

  
  

What Pool Resurfacing Means

Before looking at the resurfacing process, it helps to understand how a gunite pool is built. A pool is made up of two main layers, and resurfacing focuses on only one of them.

The gunite shell vs. the finish layer

At the core of every gunite pool is the pool shell. This is the structural concrete framework that gives the pool its strength and shape. The shell is designed to remain stable for decades when properly built and maintained.

On top of that structure sits the finish layer, which creates the smooth surface swimmers feel. This layer is often made from materials like pool plaster, quartz blends, or pebble finishes such as Pebble Tec. Over time, the top layer naturally wears down as the pool is exposed to water, chemicals, and everyday use.

As the finish ages, the existing plaster may develop a rough texture, stains, or calcium deposits that affect both appearance and comfort. These are some of the common signs that a pool needs resurfacing.

Resurfacing focuses on removing the old plaster and applying a new layer of surface material. The process often includes plaster removal, cleaning the existing surface, and applying a bond coat before the finish coat is installed. The result is a renewed pool surface that restores both durability and aesthetic appeal.

Once the finish begins to wear down, resurfacing becomes a cost-effective option that restores the pool surface and helps protect the underlying structure from further damage.

Signs a Gunite Pool Needs Resurfacing

Over time, even a well-maintained swimming pool will show signs of wear. The interior finish of a concrete pool is constantly exposed to water, chemicals, sunlight, and regular use. As that surface ages, homeowners may begin noticing several indicators that the pool may need resurfacing.

Rough pool surface

One of the most noticeable signs is a rough texture along the pool floor or steps. As the finish wears down, the once smooth texture of the surface can become abrasive underfoot.

This change often happens gradually, so pool owners may not notice it right away. However, if the surface begins to feel uncomfortable or uneven, it may be time to consider resurfacing.

Stains that won’t go away

Stains are common in pools, but when stubborn stains no longer respond to cleaning or a light acid wash, they may indicate that the surface itself is deteriorating.

Mineral buildup, such as calcium deposits, chemical discoloration, and algae-related staining, can become embedded in the aging finish layer.

Cracks, flaking, or chipping

As the pool finish ages, small cracks or flaking areas may appear. In some cases, sections of the finish begin separating from the existing surface.

When this happens, pieces of plaster may chip away, exposing the underlying structure and potentially leading to further damage if not addressed.

Discoloration or uneven appearance

Older pool finishes often develop blotchy areas, fading, or uneven coloring. This can happen as the finish reacts to years of chemical balance changes, sunlight, and environmental conditions.

While these issues may start as cosmetic concerns, they often signal that the finish layer is nearing the end of its lifespan.

When resurfacing is typically needed

Most gunite pools require resurfacing roughly every 7–15 years, depending on the type of finish, how well the pool is properly cared for, and the consistency of regular maintenance and monitoring.

Addressing these common signs early can help homeowners avoid more costly repairs later and keep the pool surface looking and performing its best.

The Gunite Pool Resurfacing Process

Resurfacing a gunite pool involves renewing the interior finish so the pool can continue performing well for years. The process requires a professional team, the right specialized equipment, and careful preparation to ensure the new surface bonds properly and remains watertight.

Step 1: Drain the pool

The first step is draining the pool so contractors can safely access the entire interior. A submersible pump is typically used to remove the water and prepare the pool area for resurfacing work.

Once the pool is empty, the surface can be inspected and prepared for the next stage of the project.

Step 2: Remove or prepare the old finish

Next, the worn finish must be removed or properly prepared. Contractors may use dustless blasting equipment, abrasive media, or traditional sandblasting methods to strip away the old surface.

This plaster removal process clears away the damaged material and helps remove debris and buildup from the existing surface. Proper preparation ensures the new surface can bond securely to the pool shell.

Step 3: Inspect and repair the shell

With the old surface removed, professionals evaluate the pool's condition and inspect the shell for potential issues such as:

• cracks

• hollow areas

• structural concerns

  
  

Any needed repairs are completed before resurfacing begins. Addressing these issues early helps prevent future problems and supports the long-term durability of the pool.

Step 4: Apply the new pool finish

Once the shell is ready, contractors apply the new plaster or other chosen finish material. Common resurfacing options include traditional plaster made with white cement, quartz blends, such as a darker quartz finish, or decorative pebble finishes.

The material selection affects the pool’s appearance, texture, and durability. Many homeowners also choose finishes that offer a slip-resistant surface, low maintenance, and improved aesthetic appeal.

Step 5: Refill the pool and balance the water

After the new finish cures, the pool is carefully refilled. The final step includes an initial water treatment to establish balanced water chemistry and ensure proper water chemistry moving forward.

This startup process protects the new surface, helps prevent algae growth, and supports long-term performance of the pool finish.

When completed correctly, resurfacing involves renewing the pool’s interior layer and restoring a clean, durable surface designed for many more years of use.

Popular Finishes Used When Resurfacing Gunite Pools

When homeowners resurface a pool, one of the most important decisions is choosing the new interior finish. Different materials offer different levels of durability, texture, and visual appeal. The right option often depends on the pool’s design, budget, and long-term maintenance goals.

Plaster

Plaster is the traditional finish used in many pools. It creates a clean, bright surface that gives the water a classic blue appearance.

This option is often considered an affordable option for resurfacing. Standard plaster is typically made from white cement and other construction materials, forming a smooth finish that works well in many residential pools. When properly maintained, plaster can provide a durable and attractive surface for years.

Quartz aggregate

Quartz finishes combine plaster with crushed quartz particles, creating a stronger and more stain-resistant surface. These finishes are designed to handle removing stubborn stains more effectively than traditional plaster and tend to last longer.

Quartz surfaces also come in a wider range of colors, which can influence the appearance of the pool water and create a more customized look for the backyard.

Pebble finishes

Pebble finishes use small natural stones mixed into the surface material, creating a textured and highly durable pool interior. These finishes are known for their natural appearance and long lifespan.

Many pebble surfaces are designed to be low-maintenance, resistant to staining, and capable of supporting healthy water flow and balanced pool conditions. They also provide a more natural, stone-like look that complements outdoor environments and landscaping.

Each finish option offers different benefits in terms of durability, appearance, and long-term maintenance. Choosing the right material helps ensure the resurfaced pool continues performing well while enhancing the overall outdoor space.

How Long Does a Gunite Pool Resurfacing Take

Most pool resurfacing projects take about 5–10 days of active work, depending on the size of the pool, the finish selected, and whether any repairs are needed.

Even after the work is finished, the pool cannot be used right away. The new surface needs time to cure properly, and the water must be carefully balanced during startup. Proper water chemistry during this stage helps protect the finish and ensures the pool remains durable and watertight for years to come.

When It’s the Right Time to Resurface a Gunite Pool

There are several situations where resurfacing becomes the right solution for a gunite pool. As the finish ages, the pool may begin showing signs that the surface layer is nearing the end of its lifespan.

Aging pool finish

If the finish is wearing down across the entire pool, resurfacing can restore the pool surface and extend the life of the structure beneath it.

Rough or uncomfortable texture

Over time, plaster and other finishes can develop a rough texture that makes swimming uncomfortable. Resurfacing replaces the worn material with a new, smooth finish.

Stains and discoloration

Persistent staining or uneven color can affect the appearance of the pool. When cleaning no longer improves the surface, resurfacing can restore a fresh, uniform look.

Updating the pool’s appearance

Many homeowners also choose resurfacing as part of a larger renovation project. Installing a new finish allows them to update the color, texture, or overall style of the pool while improving durability at the same time.

Resurfacing and Renovating Gunite Pools with Ferrari Pools

At Ferrari Pools: Custom Outdoor Living, we’ve spent decades building and renovating gunite pools for homeowners who want lasting quality and thoughtful design. When a pool begins showing signs of surface wear, our team carefully evaluates both the pool shell and the existing finish to determine the best resurfacing approach.

Every pool is different, so we guide homeowners through the available resurfacing materials and help them choose the finish that fits their style, maintenance goals, and long-term plans for the pool.

Resurfacing is also a great opportunity to improve other parts of the pool. Many projects include upgrades such as:

• Waterline tile replacement

• Pool lighting upgrades

• Equipment improvements for better performance

• Enhancements to the surrounding outdoor living space

  
  

These updates can refresh the entire pool area while extending the life of the pool itself.

If your pool surface is starting to show signs of wear, our team is happy to help provide service.

Contact us to schedule a consultation, and we’ll walk you through the best options for restoring and upgrading your pool.

Conclusion

Resurfacing restores the interior finish of a gunite pool while preserving the strong concrete shell underneath. When done properly, the process improves the pool’s appearance, creates a smoother swimming surface, and helps protect the structure for many years to come.

Frequently Asked Questions

How often should a gunite pool be resurfaced?

Most gunite pools need resurfacing about every 7–15 years, depending on the type of finish, water chemistry, and how well the pool is maintained.

Can you swim immediately after resurfacing a pool?

No. The new surface needs time to cure, and the pool water must be carefully balanced before swimming is recommended.

What is the best material for resurfacing a gunite pool?

Common options include plaster, quartz, and pebble finishes. Each offers different durability, texture, and visual appearance.

Can resurfacing fix cracks in a pool?

Resurfacing can address minor surface cracks and cosmetic damage, but structural issues in the pool shell may require additional repairs before the new finish is applied.