Collection: Primaloc Epoxy Blog

A set of epoxy resin kitchen accessories made with wood and colorful pigments.

Primaloc Epoxy Basics: Is Epoxy Waterproof?

Many people ask us whether epoxy becomes waterproof after it has finished curing. Some also ask us how water affects it while the resin is still in liquid form.

Let's take a look at our answers!

Is epoxy waterproof?

Yes, cured epoxy is waterproof. This is actually a key benefit of using epoxy resin as a protective finish. Many of the materials that epoxy tends to be used on are susceptible to water damage and rotting from excessive moisture.

Epoxy enables these materials to retain their optimal dry state by preserving them beneath a perfectly smooth surface. You can use epoxy to keep porous materials such as wood from rotting and metals from rusting.

In addition to the waterproofing feature, epoxy also improves the aesthetic traits of most materials. For instance, the appearance of wood is embellished with a layer of epoxy. In fact, most types of wood will look sharper, exhibiting deeper, richer color with a layer of epoxy. This is due to the way light passes through epoxy.

Another aspect of this is that the epoxy is very easy to clean. Unlike many porous or uneven materials, which require tougher chemicals to remove residues and stains, epoxy can be cleaned with warm water and ordinary soap.

A light-colored wooden epoxy bar top.

But what about uncured epoxy that's in a semisolid or liquid state?

That's a bit more complicated. If water gets mixed into epoxy resin before it has a chance to properly cure, it can prevent the chemical bonding process from finishing properly. This will often result in soft spots on a finish or just a resin "sludge" that is unable to fully harden.

To avoid these issues, it's important to limit relative humidity when working with epoxy; it should be no more than 60% whenever possible. You'll also need to keep ambient temperature within the curing range—about 70°F to 80°F is adequate, though 75°F is considered ideal.

With a well maintained curing environment, your epoxy will harden to a rock-solid, pristine finish.

Epoxy: An ideal choice for countertops, bars, and tables.

Now that we've established that epoxy is indeed waterproof, you can probably see how this makes it such an incredible option for a bar top, countertop, or table top finish.

Because epoxy is both durable and waterproof, it has become the go-to choice for protecting high-traffic areas where spills and food messes are expected. The smooth surface is incredibly easy to clean, saving you time and effort in maintaining a sanitary environment.

A colorful outdoor wooden epoxy resin table top.

Primaloc Epoxy: Premium Epoxy for Premium Results

When it comes to epoxy resin, Primaloc Epoxy gets the job done.

Epoxy resin is beautiful, strong, and long-lasting—which is why you shouldn't compromise on quality. With Primaloc Epoxy Resin, you get the ultimate finish in durability and visual appeal.

When you're ready to give your surface an epoxy finish, choose strong and reliable—choose Primaloc.


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