Best Concrete Countertop Sealers 2021 – Reviews & Top Picks

The list is endless of the things that endanger the looks and durability of your beautiful countertop. Water, vinegar, soap scum, salt, spices, mold, food stains, and other elements all pose a risk. 

Water, for instance, can soak in and create cracks when it freezes and expands. Stains can become hard to remove and scratch the nice surface.

If you want to keep your concrete countertop looking great, then you got to think about applying the best concrete countertop sealer. The product creates a barrier that considerably limits water and air from getting into the countertop. It also prevents staining and scratching.

There are countless of products online designed to seal your countertop. However, not all of them are quality-made. So, I created this article to help you narrow down your options and get the right sealer for your needs.



Editor's Rating


Black Diamond

Concrete Countertop Sealer

5 out of 5

Foundation Armor Concrete Sealer

5 out of 5

Siloxa-Tek 8500 Penetrating Concrete Sealer

4.5 out of 5

GlobMarble Concrete Countertop Water Based Sealer

4 out of 5

Tuff Duck Concrete Countertop Sealer

4.5 out of 5

Miracle Sealants 511 Impregnator Sealer

4.5 out of 5

Benefits of Using Sealer on Concrete Countertop

A concrete countertop is a beautiful structure. Apart from providing you with a place to prepare your food, it adds aesthetic value to your kitchen.

That being said, the structure is susceptible to damage from water, salt, soap scum, vinegar, and other elements. Unprotected, it can start to accumulate stains and lose its beauty. But you can prevent that by protecting it with a good concrete sealer.

Here are the benefits of applying a concrete sealer to your surfaces:

No more mold

Concrete is a porous material, meaning it absorbs moisture. Without a seal, the surface is dump, and thus welcome to mold and mildew. The two, in turn, discolor the surface and make it an eyesore. By applying a sealer, water is significantly stopped from entering the structure, thus discouraging mold and mildew growth.

Increased durability

You’ve probably seen a cracked countertop. These cracking issues are a result of water and air entering the concrete and then expanding and freezing when it gets too cold. When you seal the concrete, you limit the rate at which air and water get in.

That is a great step toward improving the durability as you minimize the chances of cracking. Not to mention the prevention of mold growth also reduces the rate of deterioration.

Color Enhancing and Restoration

Has your concrete lost color or been discolored due to exposure to elements or time? A sealer might be the healing power you're looking for. Some products come with the ability to darken the surface slightly, enhance the color, or add some gloss. With them, you can make the surface look good as new.

If you’re looking for a product that will work, the following concrete countertop sealer reviews should be a good pointer. Let’s dive in.

Our Recommended 6 Best Concrete Countertop Sealer 2021

1. Black Diamond Stoneworks Wet Look Natural Stone Sealer

best concrete countertop sealer

Black Diamond is a well-known brand that specializes in sealing products for stone and ceramic tiles. Though the brand started from scratch, its superior quality has seen it rise to the top ranks in the industry, with over 30 products currently.

If you’re looking for the best concrete countertop sealer, check out the Black Diamond Stoneworks Wet Look. This is a water-based sealing liquid that offers great simplicity and ease of use.

What makes it a fantastic option for countertops is the fact that it is not harsh. Unlike many other products in the industry, it is not brewed with toxic chemicals. Therefore, you can safely put food items on surfaces sealed with the product without worrying about poisoning.

Moreover, the solution doesn’t have a strong odor. In fact, it comes with a faint nice smell reminiscent of lemons.

One major concern you might have when applying a countertop sealant is whether the product will darken the surface. I'd like to assure you that with the Black Diamond Wet Look, it's not going to happen. Rather, what you end up with is a nice, shiny finish.

You will love how fast the product dries. In one hour, the surface will be dry to the touch, and within a day, it will be cured. The dried surface is a reliably water-tight, chemical-resistant, scratch-resistant finish that lasts.

Ease of application is one factor worth mentioning. You have several choices for how you want to do it. You can use a paintbrush, a wool pad applicator, a piece of sponge, or a low-pressure sprayer.

The liquid comes out of the bottle with a nice consistency like skimmed milk. This helps prevent puddling and also aids the coverage.

You can use the sealer on not only concrete countertops but also tile and grout, brick, garage floor, and more, both indoors and outdoors.

Highlighted features:

  • Great coverage – 600 sq ft per gallon.
  • Nice skimmed milk consistency for easy application.
  • Wide range of application style choices – brush, wool pad, etc.
  • Dries to a beautiful sheen in one hour.
  • A non-toxic formula that is safe for use on countertops.
  • Does not darken most surfaces.

2. Foundation Armor AR350 Wet Look Sealer | best sealer for concrete countertops

Foundation Armor is a leading distribution company in the US that works with US-made sealants. Its quality-made products are ready to apply right out of the container.

If you want a product that will create a nice and durable protective coating on your countertop, the Foundation Armor AR350 Wet Look Sealer is worth a look.

This liquid acrylic sealer, manufactured using non-recycled resins, enhances, seals, and protects a range of surfaces from brick and concrete to pavers.

Appearance is the main thing that people love about this product. Applied, the liquid dries to a nice dark finish that looks wet and glossy. Yes, there’s some darkening, but not so much that you cannot make out the original color. A great advantage I have observed is that there is no yellowing.

As an acrylic sealer, the product offers some degree of breathability. That way, moisture is allowed to pass out from the concrete, so that the strength of your countertop is not compromised.

One thing I love about this sealer is the coverage it offers. This particular model has a capacity of 5 gallons. Amazingly, the quantity is enough to cover an area of 700 to 900 square feet depending on the number of coats you put on.

Countertops are constantly exposed to water, salt, food, and other items that might cause staining and other forms of deterioration. Thankfully, the glossy film that the sealer creates is resistance to these elements, thereby preserving your countertop’s look and quality.

The Foundation Armor AR350 Wet Look Sealer is extremely easy to apply. You can use a brush or even a roller with no bubbling issues. As the product is self-priming, you don't need to worry about applying a primer beforehand. Also, maintained is easy as you can just apply the new coat directly on top of the old one.

Applied well, the protection offered by this product can be expected to last over five years without a need to recoat.

Highlighted features:

  • Great coverage – 500 to 900 square feet for the 5 gallons.
  • Acrylic sealer that is breathable and low VOC.
  • Darkens the surface a bit but has no yellowing.
  • Dries to a wet, glossy finish.
  • Excellent resistance to water, salt, food-stains, and chemicals.
  • Easy to use – self-priming and can be applied with roller, brush, or sprayer.
  • Versatile – can be applied to concrete, brick, pavers, etc.

3. Siloxa-Tek 8500 Penetrating Concrete Sealer

best sealer for concrete countertops

Many sealers change the appearance of the surface, such as making them darker and adding a sheen. But perhaps you want something that will not change the look at all. If that’s the case, the Siloxa-Tek 8500 Penetrating Concrete Sealer is for you.

When you apply it, you might feel like you haven’t really accomplished anything as the surface looks no different. That is until you splash water on it and you see the beads as proof of the created water seal.

What makes this the best sealer for concrete countertops is that it penetrates deep into the surface, providing reliable sealing that keeps moisture and other elements at bay. It is a unique silicane formula with industrial-grade strength to keep out water, salt, food stains, and chemicals.

When looking for a sealant, it is always advisable to check whether it is breathable. By being breathable, the sealer allows the moisture in the concrete to escape, which ultimately improves the countertop’s durability. The Siloxa-Tek, being 100% breathable, offers this fantastic benefit.

To make things even better, the product allows moisture to escape without any adverse effect on the applied coating.

Ever seen countertops with a peeling or cracking sealer? They can be quite an eyesore! Well, these are usually low-quality sealers with acids. The Siloxa, being high quality, and free of acids and VOCs, does not degrade, at least not any time soon. It is very resistant to peeling and flaking and it also resists yellowing.

You have the option of using a sprayer, brush, or roller to apply the product. With its consistency, which is neither too thin or too thick, the task is a breeze. Thankfully, the coverage is massive, which ultimately helps you save money.

For an effective sealer that will preserve your concrete countertop’s natural feel and texture, check out this unit.

Highlighted features:

  • Durable with industrial-grade sealing power.
  • Excellent waterproof property.
  • Does not change the look of the surface.
  • 100 percent breathable – allows the escape of moisture.
  • Non-acidic – flaking, peeling or discoloration.
  • Versatile – for both indoor and outdoor use on decks, countertops, etc.

4. Tuff Duck Concrete Countertop Sealer

When you purchase gallons of a sealer liquid, you normally want to seal various items around the home like the garage floor, patio, bathroom tiles, and more. But perhaps all you want to seal is your countertop. In that case, it is unnecessary to invest in a large volume of a sealer.

The Tuff Duck Concrete Countertop Sealer is a small-size, 24-ounce product that works great for sealing a range of surfaces. If you’re not looking to seal huge spaces, then this product will be sufficient for your needs.

Amazingly, even though it is not much, the liquid has a wide coverage. Just a little goes a long way, so you can use a little of it and keep the rest for future use or apply it to other surfaces in the house.

The thing that makes this product suitable for use in the kitchen is that it is non-toxic. The water-based formula has no VOCs and on top of that, it is rated food-safe. That is why you can use it to cover various surfaces with no concerns about poisoning.

As the tough duck drawing on the label suggests, the product offers quite a bit of strength. It is a powerful formula that forms a sturdy coating on your surfaces.

Actually, the product is designed to penetrate deeply into the surface, creating a durable shell that is impenetrable by water, chemicals, stains, or salt.

As for the appearance, there is a slight darkening but the surface becomes smoother and a bit shinier and the color appears richer. Generally, the results are fabulous. You can use any application method from rolling and spraying to brushing.

Highlighted features:

  • Great coverage – up to 60 sq ft per 24oz bottle.
  • Non-toxic and non-VOC – safe for use in the kitchen.
  • Penetrates the surface to provide a superior sealing action.
  • Slight darkening with a beautiful sheen.
  • Durable finish.

5. Miracle Sealants 511 Impregnator Sealer Reviews

A name like an impregnator gives a clear idea of what something is about.

The Miracle Sealants 511 Impregnator is not one of those sealants that just create a cover on the surface. It goes the extra mile by penetrating the surface deeply. That is why the sealer has such a long-lasting effect, going up to 20 years.

One of the marvelous things about the product is that it works for both indoor and outdoor use. Indeed, this is one of the most versatile surface-sealing solvents I have come across. Apart from concrete, you can use it on slate, stucco, ceramic tiles, porcelain tiles, polished marble, quartz, and a whole range of other surfaces.

The Impregnator is built with quality in mind. As such, it is incredibly effective. Once you apply it, the solution creates a tight barrier that successfully shuts out water and oil. This factor makes it very suitable for a kitchen countertop, as it is constantly exposed to the two elements.

If you’re operating on a tight budget, wouldn’t it be wonderful if you got a product that can cover a wide area? This particular one has an unbelievable coverage. Can you imagine being able to cover up to 1000 square feet using just a quarter gallon of a sealant?

Yes, if you need a product that you can use for all your surface sealing needs at home, both indoors and outdoors, search no more.

Another factor that tells you you’re dealing with a quality-made product is the fact that it doesn’t deteriorate quickly. This is not one of the sealers that will peel or crack or discolor the surface any time soon. It is extremely durable and stable.

Lastly, the Miracle Sealants 511 Impregnator is for those who don’t want a product that will change the surface tremendously. It forms an invisible barrier with a slight gloss.

Highlighted features:

  • Incredible coverage – up to 1000 sq ft per quart.
  • Great penetrative ability for long-lasting sealing.
  • Durable – offers protection for up to 20 years.
  • Non-toxic – safe for areas used in food preparation.
  • Versatile – can be used on marble, stucco, granite, tiles, concrete, etc.

6. CLARK'S Soapstone and Concrete Sealer (Wax)

best concrete sealer for countertops

The last item on this least is for those who love all-natural products. If you’re keen on protecting the environment while ensuring your food preparation areas are free of toxins, the CLARK'S Soapstone and Concrete Sealer is your best bet.

This sealer/wax is manufactured from natural extracts including beeswax, mineral oil, and lemon oil. But what caught my attention the most is the carnauba wax ingredient. In case you didn’t know, Carnauba is a special high-grade wax from plants that has an excellent sheen.

Thus, if you’re looking for a nice glossy finish on your countertop, then Clark’s Sealer will serve you well.

Another great benefit of the sealer is that it is super tough. When applied, the wax doesn’t just settle on top. It gets absorbed into the surface, creating a tougher layer of protection and providing a lasting solution.

Does your surface look dull and chalky? Clark’s wax is the revitalization it needs. This product works like a charm when it comes to restoring colors. It moisturizes dry surfaces, giving them a wet, glossy appearance.

Most importantly, the wax is easy to use. Applying it to the surface will be a piece of cake especially if you use Clark’s applicator or buffing pad. After applying it, you only give it 20 minutes then wipe off the excess.

At that point, you will notice that when water splashes on the surface, it beads up to show the barrier is working.

If you’ve ever used wax or sealants that smell weird, I’d like you to know this is not one of them. CLARK'S Soapstone and Concrete Sealer has a nice smell like lemons.

For the best concrete sealer for countertops, as well as stone and slate, try Clark’s. It is all-natural and non-toxic, and therefore perfect for food prepping areas.

Highlighted features:

  • Formulated from natural products like lemon oil and mineral oil.
  • Contains carnauba wax for extra sheen and toughness.
  • Comes with moisturizing properties.
  • Effective – forms a waterproof, oilproof, stain-proof seal.
  • Smells great like lemons.

Our Top 6 Comparison Chart For Sealer for Concrete Countertops



Coverage (per gallon)

Drying time


Rating (/5.0)

Black Diamond 


600 sq ft

1 hour

Glossy finish doesn't darken


Foundation Armor AR350


100 – 200 sq ft

24 hours

Glossy finish, darkens


Siloxa-Tek 8500


250 sq ft

24 hours



Tuff Duck


320 sq ft

72 hours

Slight darkening and sheen


Miracle Sealants 511


4000 sq ft

3 to 5 hours





300 sq ft

20 minutes

Glossy finish


What to Look for Before Buying a concrete sealer for countertops?

Buying Guide Concrete Sealer For Countertops

There is a reason why many homeowners and builders choose concrete for countertops. Simply put, concrete is resilient. It lasts. That being said, constant exposure to water, salt, food stains, and other contaminants in the kitchen is a huge threat to the look and durability of your concrete countertops.

But there’s a solution – applying a sealant. The best concrete countertop sealer provides resistance against water, oil, stains, and even scratching. Moreover, it enriches the color and look of the countertop and makes it last longer.

How do you go about finding a good sealer that works? Here are a few things to consider.

Final appearance

Some types of concrete sealers change the appearance of your surfaces while others do not. Mostly, the penetrating types do not change the appearance as they get absorbed into the surface as opposed to just settling to the top.

Well, we can all agree that the main purpose of sealers is to protect against elements such as water and stains. Nevertheless, some products make the surface look darker or enhance the color, or add some gloss.

Going for a product that changes or doesn’t change the surface’s appearance is all a matter of preference. If you feel your concrete countertop is looking a little dull, go for a sealer that is tainted, so it can refresh the color.

But keep in mind that high-gloss sealers can make the surface a little slippery. So, you might want to add grit to the product before applying it to introduce some anti-slip properties.


The major way to categorize concrete sealers is by penetration. There are those products that penetrate deeply into the surface when applied, and there is another type that settles at the top, forming a film.

Penetrating sealers, also known as impregnators, come with such names as siloxane, silane, siliconate, and so on. By penetrating the surface, these form a sturdier barrier than the film-forming sealers. Though a little more expensive, they are resilient to wear, and will thus not peel any time soon.

If you’re looking for a more natural look without change to the appearance of your concrete surface, go for an impregnator.

Film-forming concrete sealers, as the name implies, just settle at the top. These come with names like acrylics, urethane, and epoxy. Though more affordable, the products are more prone to degradation, and will hence, need more frequent reapplication.

Go for a film-forming sealer if you need a wet, glossy finish or something to boost the color of your surface.


The average kitchen countertop has a size of 30 square feet. But in your house, you might have a few countertops including in the bathroom. Also, you might be looking to seal more areas other than just the countertops. Perhaps you want to seal the patio or the garage floor as well.

These are the reasons why you got to consider the coverage of your sealer.

Virtually all sealers come with an estimation of the area they can cover. You can find the info in the product description or the packaging or label. Think about the collective size of the surfaces you want to cover and see whether the quantity you’re getting will be sufficient.

For instance, if the product has a coverage of 60 square feet per gallon, the area you want to cover should be at or below that size. Else, you will need more than one 1-gallon bottle. So, check the quantity of the sealer as well as the recommended coverage per gallon.

Another factor you might want to keep in mind is whether the countertop is old or new. The older the concrete, the more the amount of sealer required owing to the extra porosity.

My recommendation – always have a little more than you think you’ll need rather than running out of sealer before your project is complete.

Drying and curing time

When a sealer coat is dry, that means dry to the touch, which is not the same thing as cured. Curing means setting so that the surface can be used without ruining the applied sealer.

Dry time matters because it determines how quickly you can apply the next layer. Also, the quicker the drying time, the safe the application is from contaminants. Because if you think about it, the longer the wait, the higher the chances of dust and other contaminants settling there and ruining the application.

Be sure to check the drying time of the product before purchasing it. Realize that acrylics are the fastest-drying. In just one hour, they’re dry to the touch. Penetrating sealers take a little longer – 3 to 6 hours. Urethane and epoxies, however, can take up to 2 full days to dry.


Ever seen a cracked concrete countertop? This is a common problem, especially with the painted ones. You might not know this, but concrete is a porous material. That means that even before you seal it, the material has already absorbed water and air.

If it is painted or sealed with a product that is not breathable, or rather a product that doesn’t allow the trapped moisture or air to escape, there might be trouble. When winter comes, the trapped air and moisture, with no escape route, freeze and expand, forcing the concrete to expand.

If you want to avoid cracks, get a breathable sealer.


Almost all concrete sealers contain harmful chemicals. That being said, the levels of toxicity differ. For instance, some products contain VOCs, which are quite poisonous, while others don’t. Also, some contain acids, while others are acid-free.

Keeping in mind that kitchen countertops are used for food preparation, you ought to consider the safety of the product. Go for one that does not have VOCs, acids, and other toxic ingredients. You should see the term "non-toxic" in the packaging as an indication of safety.

Or, you could get an all-natural sealer like the CLARK'S Soapstone and Concrete Sealer. It comes in last in the review above.

Top 4 Concrete Countertop Sealer Brands on The Market

Concrete seals are not manufactured equally. Like any other product, there are huge variations. For instance, some dry in 30 minutes while others take days. Also, some provide reliable protection for ages while others start peeling and cracking in a few weeks.

If you’re looking for a high-quality seal for your countertop, one reliable method you can use to find it is to purchase from a reputable brand. The following are some of the market’s top-rated brands in the concrete sealers sector.

1. Miracle Sealants

If you’ve heard of the renowned paint brand Rust-Oleum, then you have heard of the parent organization of Miracle Sealants.

So, Miracle Sealants was founded in the US in 1983 as one of the subsidiaries of Rust-Oleum. The brand was created to focus on the manufacture of premium care products for various floor surfaces including tile, natural stone, grout, and more.

In the over 3 decades the firm has run, it has risen to the top, receiving recognition from US customers as a provider of quality sealants.

2. Foundation Armor

Foundation Armor is a USA company that holds official certification for being a women-owned business. The brand is an industry leader in the manufacture and distribution of sealers and coatings. It makes and sells surface care products for concrete, tile, bricks, pavers, and masonry.

The reason why Foundation Armor has obtained one of the top spots in the industry is its commitment to innovation and quality. Moreover, it has one of the best customer care teams ever.

3. Clark Seals

Clark Seals is one of the oldest players in the market, having been formed back in 1956. The company is based in Oklahoma, US.

For over 6 decades, the firm has been manufacturing some of the highest-grade seals. Its line of products includes not only elastomeric seals but also surface sealers.

Perhaps the most popular surface sealer from the brand is its soapstone and concrete sealer. The unique thing about this product is that it is all-natural and free of harmful chemicals. Infused with Carnauba wax, the product is effective and it provides a beautiful sheen.

4. Black Diamond Stoneworks

Black Diamond Stoneworks is a California-based business that makes a perfect definition of “started from the bottom now we’re here”. The company began as a small firm selling only a few care products for ceramic tiles and natural stone.

Thanks to the founder’s ambition and commitment to quality, the brand became a market favorite. By injecting profits back into the business, the owner was able to expand the product line, so much that today, the firm sells over 30 surface care solutions.

Resources: concretecountertopinstitute, concretedecor, lovelyimperfection, everything-about-concrete.

Frequently Asked Questions

Q1. Why do you need to apply a concrete sealer to your countertop?

Ans: A countertop is usually exposed to many elements that can damage it. These include water, vinegar, salt, and other food items that can create stubborn stains. Applying concrete sealer helps you preserve your concrete, thereby avoiding stains and cracks.

Q2. How can I apply my concrete sealer more effectively?

Ans: It is important that you learn how to apply a concrete sealer before you embark on the task. Keep in mind that the durability of the application will depend on how to seal concrete countertops properly you do it.

Well, when applying the product, check the manufacturer’s directions on the package first. Here are a few tips for success:

  • Clean the surface beforehand – a clean, dry surface aids adhesion.
  • If the concrete is new, let it cure before you attempt sealing it, again, to make the sealer stick better.
  • If you're sealing outside, follow the weather forecasts to make sure it will not be raining in the next few days at least. A downpour on an uncured sealer will ruin things.
  • Apply the sealer in thin layers. You can apply two to three layers, but give each layer at least an hour to cure before applying the next one. Keep in mind that if your concrete surface is textured, the sealer might pool if the layers are too thin.
  • If the sealer is solvent-based, apply it by spraying, but if it is water-based, apply it using a roller.

Q3. Does concrete sealer make the surface slippery?

Ans: That usually depends on the type of sealer you’re dealing with. If it is a penetrating product, there may not be slipperiness. On the other hand, a film-forming sealer might make the surface slippery. You can add grit to the product before applying to prevent the surface from becoming slippery.

Q4. How soon will I need to reseal?

Ans: That depends on the specific product you use as well as the level of abuse you will put the countertop through. Generally, film-forming sealers will need resealing in 1 to 5 years. Penetrating sealers, in contrast, can take up to 20 years before requiring resealing, as they are more durable.

Look out for the signs of a worn seal. For instance, if water no longer beads on the surface but appears to soak in. Also, look out for scratches and dulling.

Final Word

A countertop is one of the most useful structures in the kitchen and bathroom. You can use it to store utensils and food items and you can also utilize it for food preparation. In the bathroom, the structure comes in handy for storing soaps and other items. Moreover, it adds beauty to your space.

Whether your countertop is old or new, you definitely want it to keep looking its best. You want to keep it free of stains and cracks.

With one of the best concrete countertop sealers reviewed above, you will be able to prevent water damage and maintain the beauty of your countertop by keeping elements at bay. Thankfully, the products work for more than just concrete. You can use them to seal tiles, natural stone, marble, stucco, quartz, and other surfaces.

Respect from ToolsMaster.

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2 thoughts on “Best Concrete Countertop Sealers 2021 – Reviews & Top Picks”

  1. I must say, as a lot as I enjoyed reading what you had to say, I couldnt help but lose interest after a while. Its as if you had a wonderful grasp on the subject matter, but you forgot to include your readers. Perhaps you should think about this from far more than one angle. Or maybe you shouldnt generalise so considerably. Its better if you think about what others may have to say instead of just going for a gut reaction to the subject. Think about adjusting your own believed process and giving others who may read this the benefit of the doubt.Jobs offered


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