Can Fibreglass Pools Be Saltwater?

With advancements in the swimming pool industry, buyers are seeking the best options available to them. It’s understandable considering the significant financial investment and long-term commitment involved. Saltwater pools have gained immense popularity, with approximately 80% of Australians reportedly preferring saltwater systems. But what exactly are saltwater pools? How do they differ from traditional chlorine pools? And can they be used with all pool types? In this article, we will explore these questions and more. But let’s begin with the basics.

What Is a Saltwater Pool?

When people hear the term “saltwater pool,” they often assume it means a pool filled with water that has the same salinity levels as the sea. However, that’s far from the truth. In reality, saltwater pools only have 1/10th the salinity levels found in the sea. If you were to taste it, you would find it similar to a teardrop in saltiness.

A saltwater pool utilises salt-chlorine generators or salt chlorinators to maintain cleanliness and sanitation. By adding salt to the pool water, the salt chlorinator converts it into chlorine, which helps protect the pool against bacteria and algae growth. With a salt chlorinator, you can eliminate the need for chlorine liquid, powder, and tablets while still keeping your pool water clean and hygienic.

Now that we understand the concept of saltwater pools, let’s examine their compatibility with different pool types.

Do Saltwater Systems Work with All Pool Types?

Three popular pool types among buyers are concrete pools, metal wall vinyl liner pools, and fibreglass pools.

Concrete Pools:

Unfortunately, the combination of concrete swimming pools and saltwater systems is not ideal. Salt chlorinators are considerably more abrasive on concrete surfaces, up to five times more so than regular chlorine. While it is possible to have concrete saltwater pools, they would require frequent resurfacing, which can become quite costly in the long run.

Metal Wall Vinyl Liner Pools:

It’s common knowledge that salt and metal are not a good combination. Salt has a corrosive effect on metal, leading to rusting. As a result, a salt chlorinator cannot be compatible with a metal wall vinyl liner pool. The presence of salt can cause galvanic corrosion, potentially damaging the pool structure. Even a small hole can pose a significant risk to the overall integrity of the pool.

Fibreglass Pools:

When it comes to fibreglass pools, they are the clear winner. Fibreglass pools are highly compatible with saltwater systems, as they have no adverse effects on the pool. The smooth and non-porous surface of fibreglass pools prevents the accumulation of bacteria and algae, unlike concrete pools. This translates to cost savings in terms of maintenance, as there is no need to worry about corrosion damage, resurfacing, extensive cleaning, or overall pool management.

Considerations for Saltwater Systems in Your Pool

When deciding to invest in a saltwater pool, it’s important to consider the surrounding backyard or pool area. Water splashing onto surrounding surfaces is inevitable when entering and exiting the pool. If these areas are constructed with materials that are not compatible with saltwater, it could lead to damage. For example, if the deck or any equipment around the pool is made of metal or aluminum fittings, exposure to saltwater may result in rusting. It’s crucial to consider the compatibility of materials to ensure the longevity and durability of the entire pool area.

Are Saltwater Pools Expensive?

The initial cost of purchasing a salt chlorinator can be relatively high, ranging from $600 to $2,000 depending on the brand and pool size. However, don’t be alarmed by these upfront expenses, as they can be easily recovered over the lifespan of the pool. Fibreglass saltwater pools are known for significantly reducing long-term maintenance and operational costs.

Annual maintenance costs typically range from $50 to $100. Salt chlorine cells have a lifespan of 3 to 7 years, which can be extended with proper maintenance, resulting in better and longer-lasting performance. The replacement cost for salt chlorine cells falls between $700 and $900. Compared to traditional chlorine pools, you would likely spend much more over the lifespan of the pool. If you have any objects near the inground fibreglass pools, it is advisable to wash them down with fresh water to prevent damage from corrosion caused by concentrations of salt and residue.

Are Saltwater Pools Safe?

Indeed, saltwater pools are considered safer than chlorine pools. Salt chlorinators regulate the chlorine levels in the pool and release lower amounts of chlorine compared to traditional chlorine pools. As a result, you can enjoy a refreshing swim without concerns about skin rashes or irritated eyes. With a saltwater pool, you can simply relax and take a dip without the overwhelming smell of chlorine.

Fibreglass Saltwater Pools: The Preferred Choice of Pool Owners

Here Are Some Additional Reasons Why Fibreglass Saltwater Pools Are Increasingly Popular:


The popularity of saltwater pools is on the rise due to their skin-cleansing and rejuvenating properties. Unlike chlorine pools that rely on chlorine tablets, powders, or liquid for water cleanliness, saltwater pools eliminate exposure to toxic fumes. Moreover, saltwater pools can provide detoxification, exfoliation, and skin revitalisation. If you have any skin allergies, the balanced chlorine content in saltwater pools ensures that no adverse reactions are triggered from overexposure. Instead, your skin can retain more moisture and feel nourished, resulting in a healthier and more vibrant appearance.

Regular Disinfection:

Saltwater systems incorporate disinfection mechanisms that effectively inhibit the growth of algae, bacteria, and other contaminants in the pool. Through the process of electrolysis, the salt dissolves and releases hypochlorous acid into the pool water, ensuring a germ-free environment. With this advanced purification method, you can swim in the pool with confidence and peace of mind.


Compared to chlorine pools, saltwater pools offer superior convenience and ease of management. By connecting the pool to a smart device, you can control various components through a dedicated app from anywhere you are. Automated pumps take care of regular water regulation, while the heating and circulation system maintain the perfect water temperature for an enjoyable swim. All of this can be effortlessly managed with a simple touch of a button, providing you with a seamless and hassle-free pool experience.

In conclusion, maintaining a saltwater pool is much simpler compared to a traditional chlorine pool. While the initial cost may be higher, you can easily recover your investment over time. Inground fibreglass pools are particularly well-suited for saltwater systems due to their virtually non-porous nature, ensuring excellent compatibility and a healthier swimming environment.

If you envision a beautiful fibreglass saltwater pool in your backyard, don’t hesitate to contact us. Our experienced pool builders have successfully installed countless pools for satisfied customers, and we would be thrilled to turn your dream into a reality. Call us today to start enjoying the benefits of a stunning saltwater pool in your own backyard.