Regular maintenance and repair can help go a long way in keeping your concrete floors looking great. One long-term solution to this is a quality concrete sealer.

Designed for surface protection against water damage posed by freeze-thaw processes, stain, oil as well as other chemicals, they can extend the life of the concrete surfaces efficiently.

Their potency, nonetheless, depends on the right choice you’ll make among the thousands of options available in the market.

With this, we set out to explore five of the best concrete sealers that can complement any type of concrete.

Hand-picked and inspected by masonry experts, they will give you satisfying results that are comparatively better than what most brands could provide.

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Best Concrete Sealers Comparison & Rating

Concrete Sealers

Features

Siloxa-Tek 8500 Ready to Use - 1 Gallon Penetrating Concrete Sealer, Water and Salt Repellent
  • siloxane and silane
  • 1 gallon
  • clear, natural finish
5 GAL Armor AR350 Solvent Based Acrylic Wet Look Concrete Sealer and Paver Sealer
  • 5 gallons
  • low-gloss (wet look)
  • acrylic solvent-based
KILZ L390201 Interior/Exterior Concrete, Brick, and Tile Liquid Masonry Sealer, Wet Look (High-Gloss), Clear, 1-Gallon, 1 gal, 4 l
  • high-gloss (wet look)
  • clear
  • 250 - 400 square feet per gallon per coat
EnduraSeal 100% Acrylic"Wet Look" Semi Gloss Concrete Sealer Solvent Base - 5 Gallon
  • semi-gloss (wet look)
  • acrylic 
  • 5 gallons
ToughCrete Concrete Sealer - 1 Gallon (Covers 600SqFt) - Concrete Sealant for Driveways, Garage Floors, Sidewalks, Patios, Paver and Other Concrete Surfaces
  • matte finish
  • clear
  • penetrating (siloxane)

1. Ghostshield Siloxa-Tek 8500 Concrete Sealer

Siloxa-Tek 8500 Ready to Use - 1 Gallon Penetrating Concrete Sealer, Water and Salt Repellent
Specifications:
97% Overall

Brand

Ghostshield

Coverage Area

250 square feet per gallon per coat

Color

Clear

Finish

Natural

98%
quality
98%
protection & retention
97%
ease of use
96%
value for money
Pros:
  • Boasts a high-performance isooctyltriethoxysilane powered by nanotechnology that provides greater performance for deeper penetration through its smaller molecular structure up to 250 square feet per gallon per coat.
  • Highlights a water-based, industrial-grade silane/siloxane designed to minimize water and moisture intrusion while shielding concrete and masonry surface.
  • Provides excellent impact on the water beading, excellent absorption, no change of appearance, low odor, and low VOCs.
  • Protects the surface against the penetration of chloride ions and forms an efficient chloride shield significantly reducing the entry of chloride ions to avoid salt and chloride damage.
  • It is fully breathable and non-film forming, allowing moisture inside the concrete to escape without damaging the sealer.
  • Increases abrasion resistance, decreases concrete dusting, and makes maintenance easier.
  • Has a natural flat finish and does not affect the surface appearance.
  • Able to penetrate the concrete and react in the pores and capillaries producing a long-lasting hydrophobic surface.
  • DOT requirements are met and surpassed.
Cons:
  • Since the application guidelines advises for two coats, it only covers about half of the specified square feet or just less than 150 square feet.
Final Take:

Ghostshield is another brand of Kretetek, a company that specializes in concrete sealers, densifiers, and other similar items intended for both residential and commercial applications. To create the most powerful formulas, all of their products are meticulously designed utilizing innovative nanotechnology and advanced chemistry. Ghostshield Siloxa-Tek 8500 Concrete Sealer is just one of those items, which uses silane or siloxane to make indoor and outdoor surfaces look spectacular. It is a waterproof, deep-penetrating repellent that restricts the surface from the freeze-thaw cycles and from damaging water solutions. Its intelligent nanoparticles have even deeper penetration, adding an extra layer of protection, thanks to its long-established hydrophobic agents and the latest advances in nanotechnology.

2. Armor AR350 Concrete Sealer

5 GAL Armor AR350 Solvent Based Acrylic Wet Look Concrete Sealer and Paver Sealer
Specifications:
96% Overall

Brand

Foundation Armor

Coverage Area

175 square feet per coat per gallon

Color

Clear

Finish

Low-Gloss

96%
quality
97%
protection & retention
96%
ease of use
96%
value for money
Pros:
  • Covers up to 175 square feet per coat per gallon, a total of 875 square feet per coat for 5 gallons.
  • Features a breathable solvent-based acrylic, which is non-yellowing and gives dark concrete a long-term low gloss finish to make them appear wet.
  • Provides outstanding adhesion to a wide range of concrete and paver surfaces.
  • Helps to minimize surface abrasion damage and corrosion, such as dusting, cracking, and pitting.
  • It's self-priming and can be applied to both sealed and unsealed concrete and paver surfaces.
  • Lasts for 1-3 years on external surfaces and 3-7 years on internal surfaces.
  • Offers water, stains, chemicals, and salt resistance.
  • Will enhance the color of dull or deteriorated concrete and pavers through darkening to make a wet look.
Cons:
  • While it dries rapidly, the fumes subside after several days.
Final Take:

AR350 is a worthwhile investment if you have concrete that is exposed to extreme environmental conditions or workplace pressures. One of the benefits of this concrete sealer is that it can be used on a variety of surfaces and makes no difference whether the concrete you're dealing with was sealed or not. It is a low-cost pail that protects your concrete for a long time while also improving its appearance. It is sold in 5-gallon seals and one seal offers coverage of 875-1225 square feet on aged and porous surfaces. Even so, it provides 1,250 to 1,625 square feet of protection on thick and trowel-finished hardened concrete. Keep in mind that these figures only apply to a single coat and will always vary depending on the type of surface you have.

3. KILZ L390201 Sealer

KILZ L390201 Interior/Exterior Concrete, Brick, and Tile Liquid Masonry Sealer, Wet Look (High-Gloss), Clear, 1-Gallon, 1 gal, 4 l
Specifications:
95% Overall

Brand

KILZ

Coverage Area

250 - 400 square feet per gallon per coat

Color

Clear

Finish

High-Gloss

95%
quality
96%
protection & retention
94%
ease of use
95%
value for money
Pros:
  • Covers approximately 250-400 square feet per gallon with a wet look, depending on the texture of the surface.
  • Features a high-solid, non-yellowing acrylic-based formula that adds a high-gloss, wet-look finish to both coated and uncoated stone, tile, cement, and stucco surfaces.
  • Protects and enhances the color and detail of concrete, stone, and other masonry surfaces while preventing fading, yellowing, and color change.
  • Suitable for surfaces both indoor and outdoor like natural and artificial stone,  stucco, concrete, tiles, tiles, brick, and aggregates.
  • Dries fully in 1 hour, and it can be recoated in 4 hours.
Cons:
  • The directions are extremely in small print.
  • It takes a few coats to get the perfect look but it appears to offer quality output.
Final Take:

KILZ has been manufacturing high-quality primers and paints for over 40 years, and the KILZ L390201 Sealer is yet another outstanding product. It boasts a high-solid, acrylic-based formulation seal that covers and embellishes high-gloss wet-look concrete and maceration surfaces. It can be used as a protective coating for painting or staining and is excellent for using on recently coated or originally uncoated indoor or outdoor surfaces. It's an excellent concrete sealer that gives the concrete a sheen and is a lot less expensive than most other brands. It dries easily, doesn't stain, is completely colorless, and odorless.

4. EnduraSeal Concrete Sealer

EnduraSeal 100% Acrylic"Wet Look" Semi Gloss Concrete Sealer Solvent Base - 5 Gallon
Specifications:
94% Overall

Brand

EnduraSeal

Coverage Area

150 - 300 square feet per gallon

Color

Clear

Finish

Semi-Gloss

94%
quality
95%
protection & retention
94%
ease of use
93%
value for money
Pros:
  • Provides a professional strong solid sealer in a solvent-based and is 100 % acrylic concrete sealer.
  • Coverage varies from approximately 150 to 300 square feet per gallon.
  • Creates non-yellowing formulation on almost any substrate, and has a lower odor compared to other solvent-based sealers.
  • Built to protect and maintain the surface with a semi-gloss wet-look coating finish.
  • Adds new life to all forms of concrete, stained, colored, and stamped, as well as exposed aggregate.
  • Claims high durability for less than half the price of urethane and epoxy sealers.
Cons:
  • Its odor is a bit strong so be sure that the room is very well ventilated.
  • You must apply two coats to complete the task.
Final Take:

EnduraSeal Concrete Sealer is a deep-penetrating acrylic semi-gloss concrete sealer. It is solvent-based acrylic, so it can endure prolonged exposure to sunlight, which makes it ideal not only indoors but also in outdoor applications. This product comes in 5-gallon drums and provides coverage in the range of 150 to 300 square feet per gallon. Keep in mind that the substrate's porosity and the process you use to apply it will influence the resulting coverage. It generates semi-gloss polish that enhances the majority of substrates and its wet-look finish enhances the dull and old concrete surfaces.

5. ToughCrete Concrete Sealer

ToughCrete Concrete Sealer - 1 Gallon (Covers 600SqFt) - Concrete Sealant for Driveways, Garage Floors, Sidewalks, Patios, Paver and Other Concrete Surfaces
Specifications:
94% Overall

Brand

ToughCrete

Coverage Area

600 square feet per gallon

Color

Clear

Finish

Matte

94%
quality
95%
protection & retention
92%
ease of use
95%
value for money
Pros:
  • Offers a water-based mixture that dilutes at a 1:2 ratio in each gallon.
  • Protects the life of your concrete surfaces by covering areas up to 600 square feet per gallon.
  • Extends the life of your concrete surface and increases the value of your house.
  • Comes in the form of a siloxane penetrating sealer that will cover your driveway, pavement, garage surface, deck, or some other concrete surface.
  • Leaves 10+ years of protection from issues like corrosion, moisture, seawater, and damage with its protective coating.
Cons:
  • Easily leaves blemish, especially if inappropriately applied.
Final Take:

ToughCrete Concrete Sealer penetrates the concrete to provide long-term coverage not just on the top-floor surface, but also underneath the ground surface. It's suitable for outdoor use, but it also fits well as a garage floor sealer. Siloxane products are an environment-friendly formula that can prevent oxidation, salt damage, including water damage. You may use it as a full capacity or diluted, or even both, depending on how heavily damaged a particular surface is. In every case, this concrete sealer performs admirably.

Best Concrete Sealers - Buyer's Guide

Type

Concrete sealers are divided into two broad classifications, penetrating and topical concrete sealers. Several penetrating concrete sealers are formulated from siloxanes, silicones, silanes, as well as silicates that displace into the concrete. With its active compounds reacting with the blocking component, the concrete pores may be covered and sealed. The topical concrete sealer, on the other hand, covers the entire top surface. and has outstanding adhesion properties that serve as a protective shield over the concrete. 

Furthermore, more options such as acrylic concrete sealer that covers the concrete with a thin layer of protection and is a cost-effective alternative that is simple to apply and flexible to use. There is also a polyurethane concrete sealer that is a thicker and much more durable kind of sealer unlike acrylic, and a thick and durable solution of sealing that is provided by an epoxy concrete sealer.

penetration

For the highest strength and protection against moisture accumulation, use a deep penetrating sealer. These sealers are best used in high-traffic areas outside. Instead of using an acrylic concrete sealer, you might use a penetrating type of sealer to provide excellent protection while maintaining the concrete's appearance largely unchanged. Be sure to pick a coating that is suitable for your concrete surface.

Aesthetic

Different sealers have different finishes that can enhance the appearance as well as the maintenance of the concrete surface. Your sealer should provide UV protection for exterior concrete to avoid yellowing. It must also be water-resistant, long-lasting, and breathable.  You may also have to consider getting an anti-slip finishing to prevent being slippery. You might get maximum protection while maintaining the appearance of concrete with a penetrating sealer, or you might pick an acrylic sealer designed to give a fresh look. Then again, you can use high-gloss sealers or low-gloss sealers based on your preferences.

Coverage

Make sure that the product comes with enough sealer to cover the area you want to seal. The majority of companies provide coverage rates that are just anticipated. As estimated, coverage rates range from 50 to 400 square feet per gallon.  That being said, keep in mind that it depends entirely on the porosity of the concrete surface, and the coverage area may change over time.

Climate

Water and salt are the two most harmful elements to your concrete surface. Because of the freeze-thaw phases, moisture can permeate into the pores of the concrete and result in physical damage to the substrate. Moreover, salt can oxidize and degrade the concrete. Note that sea breeze right on the coast, lawn compounds, ice melt, and other triggers may cause this. So if your climate is prone to moisture or salt, invest in a deep penetrating concrete sealer for maximum protection.

Best Concrete Sealers - FAQs

Is concrete sealing really necessary?

No, not necessary but for the record, a concrete sealer can allow you to prevent cracks, dirt, and scuff marks on your concrete floors

What would be my concrete’s finish/final look after applying concrete sealers?

It varies entirely on the type of sealer you use. The majority of active chemical sealers are almost transparent as they penetrate the concrete, while the acrylic and epoxy sealers provide an enormous shift in colors as well as comes with an extremely brilliant wet-look for concrete. Moreover, topcoat sealers like urethanes are available in a wide variety of finishes, ranging from matte to glossy.

How long is my concrete sealed surface going to last?

Chemically active sealers penetrate the concrete the longest possible time and will usually eventually fade over time until the substratum itself starts to break down. It's possible to get similar lifetime output with an epoxy or urethane coating, which usually lasts 5 to 10 years of normal exposure. On the other hand, an acrylic-based sealer can only last from 1 to 3 years.

Is concrete sealer eco-friendly and user-friendly?

As for most chemicals, it is worth researching a little in advance. Verify if your sealer contains VOCs or volatile organic compounds because this could affect your health. Bear in mind that the best choices are the ones that offer low-odor as well as no VOC sealers.

Author

Santi Bongco is an editor at SolidSmack which is the leading site for 3D CAD, robots, cool product designs, and other technologies. For the past seven years, he taught robotics and developed innovative 3D printer ideas with his students. He also helped in developing some innovative digital ideas and products for various digital marketing businesses and big companies in Asia. Now, aside from exploring buffet restos in California, he enjoys leading groups of our in-house experts in trying some of your favorite products and electronic brands to write insightful reviews for you. PS: He loves reviewing appliances and taking them home to personally ‘try’ them.