Are Concrete Tables Waterproof?

Natural Concrete Tables are not Waterproof

Here's the thing about concrete, as a material, it's got its quirks. It's a bit like a sponge. Concrete can soak up water if you let it. You spill a bit of water on a concrete table, and if you leave it be, it'll eventually seep in. It's just the nature of the beast.

But that shouldn't put you off. Concrete tables have got a lot going for them. They're tough as old boots and can take a fair bit of rough and tumble. What you have to keep in mind is that when it comes to water, they're not exactly duck-friendly. If you're planning on putting one in your living room or even outside, just be aware that they're going to need a bit of attention to keep them looking their best.

There's something charming about the way concrete ages. It gets this lovely patina over time, like it's telling a story of all the good times it's seen. So, while they're not waterproof, concrete tables bring a bit of character and rugged charm to your space.

A waterproof concrete table in a living room.

A circular coffee table made of waterproof concrete

A circular coffee table made of concrete

Waterproofing your Concrete Table

It's not a hard job, but it does take a bit of effort and care. First off, you need to clean your table properly. Give it a good scrub with some mild soap and water, then let it dry completely. We're talking bone dry here, not a hint of dampness.

Next, you want to get your hands on a decent concrete sealer. There are loads of options out there, so pick one that's designed for the job. You'll want something that's going to penetrate the concrete and form a protective barrier.

When you're ready, apply the sealer evenly across the surface. Use a brush or roller, whatever you've got to hand, and make sure you cover every bit of it. Don't be shy with it as more is better here. Let the first coat dry completely, then give it another onceover with a second coat.

After you've finished sealing, let the table sit for a day or two to make sure everything’s properly cured. You don't want to rush this bit. Once it's all set, you’ll have a table that’s ready to fend off spills and splashes like a champ. And just to keep things tip-top, give it a reseal every couple of years.

Water, Fizzy Drinks and Coffee Spills on your Concrete Table

What happens when you spill stuff like water, coffee, or fizzy drinks on your concrete table? If we're talking about an unsealed table, you've got to be a bit careful. As mentioned, concrete is quite absorbent. Water isn't too much of a bother. It can leave a mark if it sits there long enough, but it's usually more of an annoyance than a real problem. Coffee, on the other hand, is a different story. Leave a mug ring or a spill on the table, and you might end up with a lovely brown stain that won't budge.

Fizzy drinks can be just as bad, if not worse. The sugar and acids in them can seep into the concrete and leave all sorts of stains. Think about it – a bit of cola spills, and next thing you know, you've got a sticky, discoloured patch that looks like it's seen better days. Plus, the acid can even start to wear away at the concrete itself over time.

It's not just stains you’ve got to worry about. Unsealed concrete can crack or get damaged when it absorbs too much liquid. Imagine all those little nooks and crannies filling up with liquid, expanding and contracting with temperature changes. It’s a recipe for disaster in the long run. That’s why sealing your concrete table is so important. A good seal keeps all those nasty spills on the surface, where you can wipe them away without a second thought.

Waterproof dining table made out of concrete.

What types of sealants work best for waterproofing concrete tables?

When it comes to waterproofing concrete tables, the best sealants are usually penetrating sealers, acrylic sealers, and epoxy coatings. Penetrating sealers soak into the concrete and create a barrier from the inside out, making them great for long-term protection without changing the table’s appearance. Acrylic sealers sit on the surface and give a nice, protective finish while enhancing the colour and texture of the concrete. If you’re looking for heavy-duty protection, especially for outdoor tables, epoxy coatings are your go-to. They create a thick, durable layer that’s both waterproof and resistant to stains.

How can I tell if my concrete table needs to be resealed?

You can tell if your concrete table needs to be resealed by paying attention to a few key signs. First, if water no longer beads up on the surface and instead starts soaking in, that’s a clear indicator the sealant is wearing off. You might also notice the colour of the concrete looking duller or more susceptible to stains from spills. If you see any small cracks or the surface feels rougher to the touch, those are also signs that the protective seal is breaking down. A simple water test (pour a little water on the table and see if it beads or gets absorbed) can help you determine if it’s time to reseal. If the water soaks in, it’s definitely time to give your table a fresh coat of sealant.

Can I leave a concrete table outside year round without worrying about water damage if it’s sealed?

Yes, you can leave a sealed concrete table outside year-round without too much worry about water damage, but there are a few things to keep in mind. A good quality sealant will protect your table from rain, snow, and humidity, preventing water from seeping into the concrete and causing damage. However, over time, exposure to the elements can wear down the sealant, so it’s important to inspect the table regularly and reapply the sealant as needed, typically every couple of years. Also, while the sealant helps, it’s still a good idea to cover the table during harsh winter months or heavy storms to extend its lifespan and keep it looking great.

Can I use wax as an additional layer of protection on a waterproofed concrete table?

Applying a quality wax over the sealant adds an extra barrier against stains, spills, and daily wear and tear. It also gives the surface a nice, smooth finish and can enhance the natural colour of the concrete. Just keep in mind that wax isn’t a substitute for sealant, it’s more like a top-up that boosts the protection already in place. You’ll need to reapply the wax every few months, depending on how much use the table gets, to keep it in top shape

Can I place potted plants directly on a concrete table without damaging it?

You can place potted plants directly on a concrete table, but there are a few things to watch out for to avoid damage. Over time, water can seep out from the pots, and if your table isn’t properly sealed, this moisture can cause stains or even weaken the concrete. The base of the pots might also scratch the surface, especially if they’re heavy or get moved around. To protect your table, it’s a good idea to use a saucer or tray under each pot to catch any excess water and prevent direct contact with the concrete.