can epoxy withstand chlorine?

Epoxy resin is a type of plastic that’s typically used to coat surfaces and make them more resistant to wear.

But can epoxy resin be used underwater? Can you epoxy a pool? Can it withstand chlorine? Let’s take a look at these questions and more.

Is epoxy resistant to chlorine?

If you’ve got a pool or hot tub, you know the importance of keeping it clean. Even if your water has some level of chlorine in it, that doesn’t mean the chlorine will always be able to keep out algae, mold, and bacteria.

Epoxy is resistant to chlorine because epoxies are based on chemical reactions between two substances: resin and hardener.

If these reactants don’t mix properly or get contaminated by other chemicals, then they won’t cure properly. Chlorine can contaminate epoxy because it’s an oxidizer—a chemical element that can damage the nitrogen-based polymer chains in epoxy resins (and other plastics).

Does chlorine affect epoxy?

You’ve probably heard that chlorine is a strong oxidizer and can cause epoxy to fail. Chlorine is used for cleaning swimming pools, as well as in bleaching treatment of materials like wood and textiles.

Here’s how chlorine affects epoxy: The chlorine in the pool water reacts with the resin in your paint (the “curing agent” in your paint) to make it brittle and weak, causing it to fail at a much faster rate than normal.

If you don’t have a swimming pool, there’s still reason to be concerned about exposure to chlorine; when exposed to high levels of this chemical over time, epoxy will become brittle and lose its strength because its curing agents are being broken down by oxidation reactions with free radicals produced by exposure to free radicals found within the environment around you (as well as from household products).

Is epoxy chemical resistant?

Epoxy is resistant to many chemicals and substances, but there are some that will easily damage it. The main one is salt water.

Chlorine in swimming pools or ocean water will react with epoxy and destroy it. Another substance that can damage epoxy is acid.

Acid rain or other acidic substances will also eat away at your epoxy coating. Lastly, alkalis, like ammonia and other household cleaning products like bleach or drain cleaner can also eat away at your coating if you allow them to come into contact with it for too long of a period of time.

Can epoxy resin be used underwater?

No, epoxy resin is not waterproof. It will swell with exposure to moisture and degrade in the presence of water/moisture.

Epoxy will also react with any other liquid or contaminant with which it comes into contact, including oil and salt water.

So if your epoxy were submerged in a pool of chlorinated water (or any other kind of chemical), it would likely be destroyed over time by that chemical exposure—which means that it’ll lose its integrity and strength as a sealant or adhesive.

Is epoxy resistant to urine?

Epoxy paint is resistant to urine, and it even repels other chemicals. If you have a pool, or if you plan on using your epoxy coating in an area that might come into contact with urine or alcohol (like a garage), then you’ll want to use epoxy paint instead of the traditional variety.

Epoxy paints are also resistant to chlorine, saltwater, and other harsh chemicals that can damage your home’s exterior surfaces.

Is epoxy resistant to alcohol?

Alcohol is a solvent, so it can dissolve epoxy. In fact, you probably have alcohol in your cabinet right now! If you’re using a non-alcohol-based solvent to clean your bathroom, chances are you have some on hand.

While this doesn’t mean that every cleaning product will be able to damage the adhesive layer in your epoxy flooring, it’s important to know what chemicals may be present before beginning any work with these products.

Can you epoxy a swimming pool?

You can use epoxy to coat the bottom of a swimming pool. Epoxy is an excellent choice for swimming pool coating because it is tough, durable, and resistant to chlorine.

The best thing about using epoxy for this purpose is that the coating will last longer than other types of paint or sealant on the market.

This means that your pool won’t need maintenance as often, which could save you money over time

Can you use epoxy in a pool?

Epoxy is a great choice for many pool applications. It provides excellent chemical resistance and lasts for many years with minimal maintenance. When it comes to swimming pools, you’ve got two main options: epoxy coatings or liners.

If you’re looking to resurface your existing pool deck or pool wall, an epoxy coating will do the trick nicely. The advantage here is that it’s less expensive than replacing the entire surface of your pool (which can get pricey).

Another plus? Epoxies are easier to apply than certain other types of coatings, so they’re less messy and faster drying too!

For those wanting something more permanent though—like a liner—epoxies are also a good option here too because they’re highly resistant to chlorine exposure (but not 100% chlorine proof).

This makes them ideal for use as part of any new liner installation project because you won’t have to worry about premature deterioration due solely to regular exposure over time by way of this common household chemical found in almost every household cleaning product out there today!


Epoxy resin is a popular choice for both industrial and consumer applications because it’s so durable. However, you should be careful when using it in or near water.

Chlorine and other chemicals can cause the epoxy to degrade over time—and if you use it underwater, there’s also the risk of damaging your pool liner by mistake.

If you want to keep your liner safe while using epoxy resin around pools, make sure that any spills get cleaned up right away (before they have time to seep into the surrounding area). This should keep things looking nice even after months or years of use!

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Martin Flood

Martin Flood has been working in the construction industry for over 20 years as a general contractor with expertise in remodeling projects that are large or small. He has furthered his career by specializing in epoxy resin flooring, providing excellent service to both commercial and residential clients. Martin’s experience enables him to offer professional advice on how to choose the right type of project based on your needs and budget.

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