Gunite pool

Gunite Pool | Everything You should Know ( Updated June 2020)

The Gunite pool is popular for its durability and flexibility. A rebar framework is used to build a gunite pool. Though the initial investment and maintenance cost is high, you can give your pool in any size and shape. To increase the longevity of the gunite swimming pool, you need to paint it regularly and repair it when necessary. In this article, I am going to discuss everything you need to know about the gunite swimming pool. I hope you will get the insight information about this type of pool and you can make better decisions.

What is a gunite pool? ( 2/600)

Gunite pool is a popular type of pool that uses a rebar framework and a mix of concrete and sand is applied over the frame. It has many advantages over the vinyl and fiberglass pool. Many people become confused between the gunite pool and concrete pool and ask, ” What are the differences between the gunite pool and concrete pool?” There has no differences between the gunite swimming pool and the concrete pool except the name.

Gunite pool | swimming pool enjoument

What is gunite pool pros and cons 

A gunite pool is popular for its long-lasting, flexibility of shaping. But it has some disadvantages also. If you look long-term view of the pool-investment, you obviously love the gunite swimming pool. Before making the right decision about a type of pool, you need to know the pros and cons of that type. Let’s see some pros and cons of the gunite pool to facilitate your decision.

Pros of a gunite pool

  • Higher ROI ( Return on Investment)

Many people stop thinking of building a gunite pool because of its initial cost. If you build your gunite swimming pool properly with the right materials, it lasts approximately 100 years. Moreover, it requires fewer maintenance costs. So, you will get a long-term return from this type of pool.

  • More versatility

This versatile pool type can be designed in any size and shape. So, you can optimize your backyard area.

  • Durability

Gunite pool is the most durable pool compared to concrete, vinyl, and fiberglass pool. A good vinyl pool liner last 25 to 30 years. Again, the average lifespan of a fiberglass pool about 25 years. On the other hand, a well-constructed vinyl pool lasts about 100 years with little replastering and maintenance.

Cons of a gunite pool

  • High installation time

The process of installing this pool takes about 2 to 3 months. So, you need to wait for a long time to start swimming.

  • High Annual Maintenance

As the surface of the gunite pool interacts with pool water, you need to replaster the surface once every 10 years.

  • Uncomfortable

Finishing of the surface of the gunite pool sometimes is not perfect. So, the children find this pool abrasive and fell uncomfortable.

  • Higher installation

The cost of the gunite swimming pool is very high compared to the other inground pools. The average cost to install a vinyl pool of approximately $20,000 to $40,000. The cost of installing a fiberglass pool is about 25,000 to 60,000 dollars. And the average cost of the gunite pool ranges from $35,000 to $65,000.

How To Build A Gunite Pool

Building a gunite pool requires lots of physical work. So, it is sometimes tough to build a gunite pool by the pool owners. So, you need to find contractors near you to build a pool. But knowing the process of building a gunite pool helps you make a proper decision of design and other materials. Here is a complete guide for you if you are a DIY enthusiast and eager to build a gunite swimming pool.

Step 01: Find a suitable place for pool

Building a gunite pool in a small space is not a good idea because you may need a pool deck around your pool. You need to take considerable maintenance work if you build a pool under a tree. So, try to build a gunite pool in a spacious space of your backyard.

Find a suitable place for gunite pool
You need to find a spacious place

You should consider the unground utility lines. Digging soil for building a pool can damage utility lines. So, before digging soil, see the design of the whole house and confirm that you are going to make a pool in a safe place.

Step 02: Choose A Design

Google on browser writing ” gunite pool,” and you will get lots of ideas about gunite pool. Choose the best design that fits in your backyard. You also should choose the design of pool steps, lighting, color, and other things.

Step 03: Take permission from Local Authorities

In some states, you need to take permission to build a gunite pool. Apply for building a pool with required papers and design of the pool. You may also require approval from the electricity department.

Approval for swimming pool

Step 04: Dig out the soil

Outline for the pool using marking chalk. Dig out the pool with a backhoe and keep soil beside the pool. After digging soil, you need to level the bottom and walls of the pool. Use a steel-tined rake to even the bottom.

Step 05: Frame the pool

You need steel rebar and plywood boards to frame the pool. Lay the rebar in a crisscross pattern with 0.625-inch rebar.

Step 06: Install the required lines and systems before spraying concrete

You need to place PVC pipes to ensure the pump and filtration system. You should also set the electric components. Poor wiring can be dangerous for you, so you need to hire a professional electrician to install the electrical lines.

Step 07: Pour the bottom with concrete and spray the walls to coat

Now you have reached the ultimate step of building a pool. Dump the concrete onto the rebar with plenty of shotcrete mix or gunite. Gunite pool pour pool with concreate

Ensure that you have created at least a 6-inch thickness of the bottom and walls. You can start spraying walls to make the building tasks easier.

Step 08: Smooth the concrete and cover them with a plastic sheet

To level the bottom and walls of the pool, you can use a big broom concreate. Professionals sometimes use a big metal straightedge to smooth the walls and corners of the pools. You can smooth the steps of the pool with this straightedge.

Gunite pool smoothing concrete

To ensure higher longevity of the construction, you should cover the bottom and walls of the pool with a plastic sheet. You can also spray water 3/4 times a day instead of covering with a plastic sheet.

Step 09: Coat the pool basin

You can use ceramic, glass, and porcelain tiles to waterproof the basin of the pool. Use chemical-resistant products to coat the basin.

This is the brief process of building a gunite swimming pool. To get more in-depth ideas, you can visit here.

Fiberglass vs. Gunite Swimming Pool 

Both fiberglass and gunite swimming pool are popular with the pool owners. They differ from one another in initial investment, durability, flexibility, and the way of construction. Which one of the two is better depends on many factors? Let’s see the differences between these two types of pool.

  • Initial Investment

The initial investment to install a pool depends on the geographic location, the size of the pool, and other factors. The initial investment to install fiberglass pool ranges from $20,000 to $60,000. On the other hand, the average initial investment to install a gunite pool costs approximately $50,000.

Winner: The fiberglass pool.

  • Cost of Maintenance

The yearly maintenance cost of a fiberglass pool includes chemicals, water, electricity, repair, opening, and closing cost. The maintenance cost depends on the size of the pool, the frequency of using the pool, and so on.

The gunite swimming pool surface is porous, so algae grow in the pool’s inner and outer surface. So, you need to remove the algae from the surface. On the other hand, the gel coating of the fiberglass pool protects the growth of algae. Moreover, you will face fewer issues of mold and mildew. So, the maintenance cost of the fiberglass pool is less than the gunite pool.

Winner: Fiberglass pool

  • Durability

The durability of an inground pool depends on both internal and external factors. The proper maintenance, the carefulness of using a pool, and weather conditions affect the pool’s longevity. The durability of a fiberglass pool is about 30 years or more.

In the case of the gunite pool, the durability ranges from 90 to 110 years or more.

Winner: Gunite Pool

  • Versatility

The fiberglass pool comes with a lot of size and shape but they may not fulfill your desired size and shape. On the other hand, you can build a gunite swimming pool in any size and shape. There have many customizing options in the gunite pool.

Winner: Gunite pool

Both types of pools have some advantages and disadvantages. The right kind of pool depends on your choice and a little bit of investment. If you don’t have any problem with the initial investment and want a highly customized pool, I recommend building a gunite pool.

How to resurface a gunite pool?

The process of preparing a new cost of pebble or plaster either by chipping out the existing plaster, bond coating, and sandblasting is known as resurfacing a pool. People always ask a common question, ” How often should they resurface pool?” There has no exact answer of this question. The frequency to resurface a pool depends on the proper maintenance of the pool and the materials used for finishing. You need to resurface your gunite pool when you see flaking, crcking, peeling, discolors, rust, and excess stain.

You can either resurface a gunite pool by yourself or hire a professional. Resurfacing a gunite pool by yourself takes some hard works. Let’s start describing the process of resurfacing a gunite pool.

Step 01: First of all, you need to drain your pool either with a submersible pump or with draining hose.

Step 02: Now, remove the damaged surface and other debris from the pool. Remove the pool deck furniture, plants, and pots.

Step 03: At this step, install the selective pool tile, ledger stone, and coping. The process of installing a particular pool tile requires approximately 2 to 4 working days. If you want your pool to be specially designed, you need to select the design before starting this step.

Step 04: To ensure the selected pool surface finish, you need to seal the plumbing. After that, install the selected pool surface materials. This process will help you to design a new shape.

How to paint a gunite pool?

The surface of the gunite pool is susceptible to damage and staining. So, you need to paint the gunite pool to prevent staining and damages.Before going to the deep painting process, you need to collect the required things to complete the painting process.

Pre-requisites for paining

  • Concrete paint
  • Protective materials such as goggles, respiratory mask, protective plastic suit, rubber gloves.
  • Submersible pump
  • Some chemicals ( Soda ash, muriatic acid, tri-sodium phosphate)
  • Brush ( wired brush, scrub brush)
  • Garden sprayer
  • Buckets

First of all, you need to drain pool water. To remove water fully, you can use water suction cloths. Choose a sunny day and windless weather to paint the pool.

Secondly, remove all jet housings around the pool and spread soda ash on the gunite pool floor. To remove stain from the pool’s surface, you spread the mixture of water and muriatic acid on the bottom and walls. Use a brush to remove stain and other spots from the surface.

Thirdly, use a brush and spread the mixture of water and TSP to wash the entire pool. Following this step will help you remove grease and dirt as well as neutralize any remaining acid. Now, rinse with water and let it completely dry.

Fourthly, repair any cracks, damages with a concrete patch kit.

Finally, covers the parts that you don’t want to paint and start painting.


How to clean a gunite pool?

The necessary materials of the gunite pool are different from concrete and other types of pool. So, you need to take special care of your gunite pool. Let’s see the required tools, chemicals, and the way of cleaning the pool.

Required Things

  1. A water hose
  2. Rake net
  3. Pool Brush
  4. Swimming pool broom
  5. Backing soda
  6. Muriatic acid
  7. Rubber gloves

Step 01: Remove all items from the pool

First of all, remove all submersible and floating items from the pool to avoid dangers. Use a rake net to remove all kinds of floating objects and the items submerged under the pool.

Step 02: Draining Gunite Pool

You can drain pool water either manually or backwashing the filters. Remove water about one-fourth of the depth of the pool. To drain water manually, open the drain valve of the gunite pool. To remove mineral deposits and sediment, you need to run your filter in a reversed direction. You can use a submersible pump if you want to drain pool faster.

Step 03: Manual Cleaning

Take a swimming pool brush to wipe the walls. The experts recommend moving the brush from top to bottom. Use the mixture of dish soap and water to clean the old gunite pool. After wiping the wall, let the pool to be dried approximately an hour.

Manual brushing of gunite pool

Some debris is too small that can’t be seen or scooped-away. To remove these types of articles, you need to vacuum your pool.

Step 4: Chemical Cleaning

Cleaning the physical debris from the pool is not enough. You need to clean the invisible bacteria with proper cleaning chemicals. You can use a mixture of water and muriatic acid to kill bacteria. Regardless of the types of chemicals, you should wear plastic gloves to avoid dangers.

I hope this guide will help you to clean your pool and increase the longevity of the pool.

How to get rid of black algae in the gunite pool?

You already know the surface of the gunite pool is susceptible for growing algae. Black is one kind of algae that is hard to remove from the bottom and walls. But don’t worry, here is the complete step by step guide to get rid of black algae from the pool.

Manual brushing of gunite pool

Step 01: Sanitize your pool

Sanitize all products that you use to prevent adding more algae. You can sanitize either by scrubbing or spraying.

Step 02: Scrub with a brush

You need to scrub the bottom and sides of the pool to remove algae. Use a stiff or wire brush to remove the protective layers of algae from the surface. You can use chlorine tablets to scrub infected areas. Using chlorine after brushing the pool helps to penetrate it and get rid of the roots of algae.

Step 03: Clean the filters

Sometimes, black algae grow inside the filters. You need to clean the filter regularly. But you need to take special care and follow the manufacturer’s direction to clean the filter with safety.

Step 04: Shock The Gunite pool

Pool shock not only helps remove algae but also helps to kill bacterial and other contaminants from the pool.

Frequently Asked Questions | Gunite Pool

how much does a gunite pool cost?

The cost of a gunite pool depends on the size of the pool. The average cost of a gunite pool remains $45,000 to $55,000.

how much does it cost to replaster a gunite pool?

The experts of plastering gunite pool charge around 5 to 6 dollars per squire feet. So, you can easily find the total cost by measuring the surface of your pool. A medium-sized gunite pool cost approximately $5,000.

How much does it cost to resurface a gunite pool?

The average cost to resurface a gunite pool is about $6,000 per 1,000 squire foot pool. There are different types of finishes you can use at the time of resurfacing. Paint, plaster, aggregate, pebble, and tile are the popular finishes used to resurface.

How much does it cost to convert a vinyl liner pool to a gunite pool

Converting a vinyl liner pool to a gunite pool costs from $3,000 to $5,000. The cost varies depending on the place you live in.

How long does it take to build a gunite pool?

The construction process takes 50 to 70 days to build a gunite pool if you follow the normal ways to construct your pool.

How long will a gunite pool last? ( 0/10)

If you build a genuine pool properly with proper materials, you can expect to last approximately 100 years. Some internal and external factors affect the lifespan of the gunite pool. So, after building a gunite pool, take proper maintenance.

How often do you have to Replaster a gunite pool?

Once in every 10 years. Sometimes, you may feel dull looking at the color of your pool. Moreover, some of the cracks can decrease the aesthetics of your pool. So, replaced your pool once every 10 years

Final Thought

A gunite swimming pool is one of the most popular inground pool. There have some advantages and disadvantages of building a gunite swimming pool. But obstacles of high initial investment, long time to build can’t discourage the pool lovers. Higher durability, the flexibility of size & shape, and the aesthetic beauty of the gunite pool have made this pool popular.

I have tried to answer almost all the questions that people want to know before building a gunite pool. If you have any questions regarding the gunite pool, feel free to ask us. You can email us with a proper description of your pool.

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