What’s The Best Caulk For Concrete Cracks In 2021?

Cracks symbolize falling apart. The very concept of these seems disturbing. Doesn’t it? But, the solution is near, find out which are the best caulk for concrete cracks.

Given the symbolization and their disturbing appearance, one cannot let cracks surround them. In thoughts, in minds, in stories, in relations, in walls, in foundations, or anything at all.

While we cannot bring you a permanent, all-rounding, and definite repair solution for most of the cases mentioned above, we can surely promise a solution for concrete cracks in walls, floor, or any concrete surface located at your home, office, garden, or construction site.

Best Caulk For Concrete Cracks

In this guide for best caulk for concrete cracks, you will come to know about the best repair solution for major and minor cracks that develop in concrete surfaces over time. Fundamentally, a caulk refers to a dry and less elastic adhesive compound that you can fill in to cracks to repair them.

Caulks are often also referred to as sealants. While it’s not wrong to do so, one must know that there’s a fine line difference when it comes to Caulk VS Sealant or Caulk VS silicone.

In comparison to sealant (which gets manufactured using flexible materials like silicone), caulk has a dry and rigid nature. Hence, it best serves in areas where there are less contraction and expansion. Also, it dries quickly, while sealants take a good amount of time.

Below, you will find caulks, sealants, or you can say, combinations of both that are likely to get the repairing job done very well at your place. Continue reading to unfold the mysteries of this magical fixing tool!

Comparing The Best Caulk For Concrete Cracks 2021

CaulkMaterialCuring Time 
General Electric GE5020 CaulkSilicone 3 Hours Check Price
DAP Self Leveling SealantSilicone 3 Hours Check Price
SIKA Care Sikaflex SealantPolyurethane72 Hours Check Price
Red Devil Silicone SealantSilicone 24 Hours Check Price
PC Products 72561 PC ConcreteEpoxy4 Hours Check Price
Red Devil Acrylic SealantAcrylic144 Hours Check Price
Sashco Slab Crack SealantAcrylic Latex 168 Hours Check Price
OSI Loctite Self Leveling SealantPolyurethane 168 Hours Check Price
Aware Housefull Sikaflex Sealant Polyurethane 24 Hours Check Price
Quikrete Epoxy Concrete RepairEpoxy3 Hours Check Price

1. General Electric GE5020 Concrete and Masonry Silicone ii Caulk

General Electric GE5020 Concrete Masonry Silicone II Caulk, one of the best caulk for concrete cracks


Inspired by NASA’s usage of aerospace silicone sealant for sealing astronaut boots to the spacesuits, GE Sealants & Adhesives is a renowned name when it comes to silicone technology. With its innovative and dedicated approach, the brand manufactures a wide variety of premium products that assist projects in the construction industry.

General Electric GE5020 also belongs to the phenomenal range of products produced by the company. And it does not come by surprise how the latter performs too well to land in this list of best caulks for concrete cracks.

Perhaps, the prime reason it landed here is that it’s one of the very few caulks that you can expose to water shortly after applying. That means if the rain is in the forecast, you need not delay your plans.

Instead, jump into action as quickly as possible. And apply the General Electric GE5020 Concrete and Masonry Silicone II Caulk.

In a matter of three hours only, it will build strong adhesion to the surface and dry. Thus, ready to deal with water exposure.

Since most other caulks require 24 hours to dry completely, this property serves as a major pro of the GE 5020. It saves waiting time and doubles the speed and efficiency of work.

What’s more, the caulk happens to be immune to harsh weather conditions. Be it, scorching heat or cold, you need not worry about the caulk developing cracks or loosening. The Silicone of the GE 5020 comes with permanent flexibility. So, even upon continuous freeze and thaw, its quality does not degrade.

No matter what weathers your house faces, the caulk will hold its place. It will not shrink, expand unreasonably, or get affected by water exposure. It also provides cracks protection against mold. Since the caulk leaves no space for even air, it leaves no area for mold to grow.

Along the same lines, it does keeps the energy bills from rising or air from seeping in.

The GE 5020 Caulk only seems to lack looks. Although the caulk itself features a beautiful gray color that seems to blend in well with most pavements, it is non-paintable.

That means if the colors of the surroundings do not match, the filling with this caulk may even look ugly. The case is different if you want to fill a crack on the ground because car or human-traffic will eventually give it a blackish tint. Thus, camouflaging it well in the background.

Also, one cannot remove the product once it gets dried. Not easily, at least.

It proves to be a bit troublesome for people who prefer quick application. One would have to secure the surrounding strips of the surface with masking tape or a tool of similar nature, and then carefully apply the caulk.

Bottom Line: If you want to fill in a crack on the ground or a concrete crack located in an out-of-sight position (for example, garage), then this is your best option. It fills in the crack easily and permanently with making slight compromises on appearance.

  • Comes with a lifetime guarantee
  • Permanent Flexibility
  • 10-year mold protection
  • Waterproof
  • Easy Application
  • Features a universal and beautiful color
  • Non-paintable
  • Difficult to remove after application
General Electric GE5020 Concrete and Masonry Silicone II Caulk,...
484 Reviews
General Electric GE5020 Concrete and Masonry Silicone II Caulk,...
  • 3-hour rain-ready
  • Sun-/freeze-proof
  • Typical uses: Sidewalks, driveways, patios, masonry, steps,...

2. DAP Self Leveling Concrete Sealant

DAP Self Leveling Concrete Sealant, reliable caulk for concrete cracks


Perhaps, the most daunting challenge that people face caulking is to level it before it dries. With lumps, the uneven and non-uniform dried caulk can look ugly. And, fast leveling of caulk requires a strong skillset and practice.

So, what shall I beginner or unskilled person do? What if you have to repair the crack in your garage floor without wanting to spend hundreds on caulking companies? Well, hey, worry no more because DAP has brought the perfect solution.

As an established caulk-producing company, the DAP has introduced a variety of amazing products in the market that resolves the user’s pain points. Hence, a majority of caulk users rely and depend on the company.

Recently, the release of the DAP Self Leveling Concrete Sealant has ignited another spark of awe and inspiration in the caulk user community. Well, what makes it unique, and what are its feature? Let’s find out!

The DAP concrete caulk comprises of high-quality silicone rubber, which offers efficient results and durability. It comes in a squeezable tube with dimensions of 2 x 2 x 11.25 inches so that one can caulk surfaces easily. However, the 13.3-ounces weight is heavier than most caulks.

Well, upon squeezing the caulk out, you will notice that the coverage is 49 linear feet with a 3/16” bead. Also, the semi-liquid caulk has a gray tint. Some people may dislike the grayish of the caulk, which is why it has a paintable nature.

Also, it has a negligible low odor so that the repaired pavement or surface is not noticeable. Perhaps, the most amazing feature of the DAP concrete caulk is the weather-resistance property. The caulk does not shrink or contract, regardless of the surrounding environmental factors.

Once applied, the concrete caulk will remain wherever it is. Also, the highlight of the product is that it has self-leveling properties, which prevents lump formation. Upon application, the caulk will become uniform automatically.

Moreover, the company has formulated the caulk using Kwik Dry Technology, which allows it to get exposed to moisture and water after only 3-hours. Whereas, other caulks typically require 24-36 hours of drying.

Furthermore, it is a waterproof product too. So, it will not allow bacterial or mold build-up. Thus, making it ideal for usage in the bathroom and kitchen, apart from concrete.

Bottom Line: All in all, the DAP concrete caulk is a good option for horizontal cracks and surfaces. As it has semi-liquid nature, it will run along vertical cracks. Thus, reducing its performance efficiency.

  • Self-leveling property
  • Waterproof
  • Less waiting period (3-hours)
  • Paintable
  • Weather-resistant
  • Durable and flexible
  • Low odor
  • Comes with a lifetime guarantee
  • Does not work on vertical cracks
Dap 18370 Self-Leveling Concrete 3.0 Sealant 9.0-Ounce
752 Reviews
Dap 18370 Self-Leveling Concrete 3.0 Sealant 9.0-Ounce
  • Adhesives & Sealants
  • Country of manufacture: United States
  • Manufacturer: Dap

3. Sikaflex Self Leveling Sealant

SIKA Care Sikaflex Self Leveling Sealant


From the automotive industry to Home improvement and construction, Sika serves the needs of all industries. The globally-operating chemical company manufactures unique and effective products to assist processes like sealing, damping, bonding, reinforcing, and other similar processes.

Sikaflex Self-Leveling Sealant – A product by the company that is one of the many essential components and tools of the construction and maintenance industry. It’s one of the cheapest best-quality caulks that you can get for concrete cracks.

The Sikaflex sealant compound comes filled in a sturdy bottle that measures 1.85 x 1.85 x 11.5 inches. To get the liquid out and apply it smoothly, you will need a caulk gun.

The product comes in the following three variants (in terms of quantity):

  • 10 ounces
  • 29 ounces

Although a 10-ounce bottle will suffice for smaller areas, we’d recommend the 29-ounce package as it comes with a good quantity and makes the deal even cheaper. It will also get the job done at a quicker rate for larger joints.

Once you began with its use, you will come to notice that the compound has a low viscosity. Even though this increases the fluidity of the compound, and it fills the crack quickly, it may take a while to dry completely.

Hence, you may not be able to expose it to water almost immediately or anytime soon after application. However, once dried, it can withstand adverse effects of weather, exposure to water, and everything else without observing a change.

The adhesion capabilities of the compound with the concrete surface are strong and impressive. It is capable of bridging gaps of width 1.5-2 inches.

And hey, don’t worry! Only because you’re filling in a gap or crack does not mean you’ve to compromise on the overall looks.

At least Sikaflex makes sure that you don’t have to do so. For this very reason, Sika Corporation offers this product in two variants in terms of colors. These include:

  • Gray
  • Sandstone

Even if these colors don’t go well with your surroundings, you can easily paint them with the desired color. The applied paint may fade with time but it will retain its freshness and brightness for a considerable amount of time.

Similarly, the application process may require the use of a tool called a caulk gun. The brand advertises otherwise, but it’s almost impossible to get the compound where you need it to be without the caulk gun. Other than that, the application is easy and smooth.

Bottom Line: Sikaflex Self leveling sealant happens to be a reasonably-priced caulk that does a strong job with cracks. It is the best caulk for vertical concrete cracks. So, if you don’t mind purchasing a caulk gun to get the job done, this is what you need!

  • Paintable
  • Waterproof
  • Weather Resistant
  • Easy Application
  • Available in two colors
  • Low viscosity
  • May require the use of tools
Sikaflex Self Leveling Sealant, Gray, polyurethane with an...
1,495 Reviews
Sikaflex Self Leveling Sealant, Gray, polyurethane with an...
  • Premium quality sealant, concrete self leveling caulk. No tooling...
  • PERFORMANCE: Self-leveling, pourable with permanently elastic and can...
  • SUPPORTS: Excellent adhesion on concrete and cementitious slabs.

4. Red Devil Silicone Sealant

Red Devil Silicone Sealant


Red Devil is an American family-owned business that has been operating in the caulk field ever since 1872. The company manufactures the best quality, if not innovative, caulk. Hence, when Red Devil introduced this Silicone Sealant Architectural Grade Caulk, the attention of the masses got drawn to it.

Therefore, making it one of the popular caulks too. But, does this Red Devil Silicone Sealant truly has features to qualify it as the best caulk for concrete caulking, or is it only the hype that surrounds the brand? Well, there is one way to find out. Let’s evaluate it ourselves!

Like all the other caulks, this Silicone Sealant Architectural Grade caulk requires a caulk gun for application. It has the dimensions of 2 x 2 x 11.25 inches and a total item weight of 1-pound. Also, the product comes in a pack of 12, while each cartridge contains 300ml.

The Red Devil Silicone Sealant comprises 100% pure silicone. Hence, it retains stability and elasticity in both hot and cold temperatures. You can apply it in temperatures below freezing point and still get good results.

Apart from this, the Silicone Sealant Architectural Grade caulk has an outstanding and unique composition that makes it extremely durable. The caulk is resistant to water and weather.

Hence, you will never find the caulk to be peeling, shrinking, or cracking. It will remain in its original state for a very long time.

It is natural to question durability and longevity. After all, one cannot immediately pass a verdict without judging the product’s performance over some time. But you do not need to worry about this sealant’s lifespan because the manufacturers provide a 50-year warranty.

Moreover, although the caulk is not paintable, it is available in five different colors. These include gray, white, clear, bronze, and black. Furthermore, it has a solvent clean-up property.

Perhaps, the mere drawback of the Silicone Sealant Architectural Grade caulk is that you will have to work quickly to level it. Or else, the result will be quite lumpy and uneven.

Bottom Line: All in all, the Red Devil Silicone Sealant is a good multi-purpose caulk. You can use it on all types of material, including fiberglass, plastic, glass, vinyl, porcelain, and marble.

  • Pure Silicone
  • Multi-purpose
  • Durable and Flexible
  • Waterproof
  • Weather-resistant
  • Solvent Clean-up
  • 50-year limited warranty
  • Available in different colors
  • Not paintable
  • Concerns regarding lumpy finish have arisen.
Red Devil 081650 81650 100% Silicone Sealant Architectural Grade,...
929 Reviews
Red Devil 081650 81650 100% Silicone Sealant Architectural Grade,...
  • Weather-resistant
  • Interior/exterior use
  • Solvent clean-up

5. PC Products 72561 PC Concrete

PC Products 72561 PC Concrete


Protective Coating Company, also known as PC, is a small family run but a reliable company operating since 1954. Up until now, the company has had a limited and targeted range of products. And thus, it seems to have mastered the very few.

One of its mastered goods includes PC Products 72561. The concrete formula comes in a slender, easy-to-hold, and use bottle.

The slim bottle is more like a cartridge. And it fits well into any standard caulk gun.

Although some users claim that the paste takes effort to get pushed out, it does so easily if handled by two people at once. One person can take hold of the tube-handling and squeezing job, while the other can direct the nozzle.

To smooth the applied paste, we suggest you can take another person’s help to use a spackle knife to even it out. What’s more, you can apply this PC products concrete two parts epoxy adhesive paste instantly on both dry and wet surfaces.

Unlike other caulks, it demonstrates equal adhesive capabilities in both dry and wet circumstances. Be it, vertical application, or horizontal, it is thick enough to stay in its place in both.

At 75°F, it has a cure time of 4-hours and work-time of 20 minutes. Plus, it has a wide working temperature range, i.e., from 34 to 115° F. It will not loosen during the contraction and expansion of the concrete.

You can use the strong paste to fix bolts, dowels, rods, and anything you like straight into concrete or stone.

However, ensure that you’ve done all your homework before application. That’s because once it gets applied and dried, the paste will be almost impossible to remove.

Also, this means that you should maintain a safe distance from it. Make sure it does not get into your hair, on your clothes, or anywhere else.

Thanks to the formula’s strength and quick-setting capabilities, you will have your goal achieved in a matter of 3-5 hours. Also, once it dries, you can customize its looks by painting or sanding it.

Bottom Line: If you got time at your hand and would like to do a permanent job for cracks as wide as 1.5 or 2-inches, the PC 72561 epoxy adhesive paste is perfect for you.

  • Non-shrinking formula
  • Paintable & sandable
  • Low Odor
  • Application possible on wet surfaces
  • Quick-setting
  • Excellent Adhesion
  • Good for both minor and major cracks
  • Difficult to squeeze out from the tube
  • Remnants difficult to remove
PC Products 72561 PC-Concrete Two-Part Epoxy Adhesive Paste for...
1,156 Reviews
PC Products 72561 PC-Concrete Two-Part Epoxy Adhesive Paste for...
  • Two-part epoxy adhesive paste to fill and repair cracks in concrete,...
  • High-tack paste resists moisture for application in damp environments...
  • Can be used in indoor and outdoor applications with an application...

6. Masonry and Concrete Acrylic Sealant

Red Devil Masonry Concrete Acrylic Sealant


Are you looking for a caulk that specializes in its purpose? Do you want the ultimate concrete crack repair solution? Well, then the Masonry and Concrete Acrylic Sealant is your best option!

The Red Devil 0646 Acrylic Sealant Repair comes in a 300-ml squeezable tube with the dimensions of 1.9 x 1.9 x 11.13 inches. It has an overall weight of 15-ounces, which makes handling pretty convenient. Note, unlike the previously reviewed Red Devil product, this sealant comes as a single tube.

It has a unique acrylic compound composition that offers immense durability. Regardless of the external factors, the caulk will not peel, crack, or chip.

The caulk shows considerable resistance against water. However, it is recommendable to use it in places where there is no or little contact with water. Usually, acrylic does not perform better than silicone in water prevention.

Designed especially for outdoor use, the Masonry and Concrete Acrylic Sealant will also not stain or get discolored. As it is a paintable caulk, you can color it to match the surface.

However, the caulk has a textured finish and a slightly gray color that easily blends with the mortar. Also, despite the textured finish, the result remains smooth. Moreover, you can use it on a variety of surfaces, including:

  • Stucco
  • Concrete
  • Wood
  • Stone
  • Brick
  • Cinder block

The Masonry and Concrete Acrylic Sealant requires a quick water clean-up. After application, your hands and the surrounding surfaces may get dirty. Hence, the water clean-up property comes real handy.

Perhaps, the mere drawback of the sealant is its curing time, which is 6-days. A majority of advanced caulks take only hours or a day. However, you will have to leave the repaired place for a week to dry completely.

The Red Devil 0646 Acrylic Sealant Repair has an integrated design and composition so that it repairs the concrete-related problems efficiently. You can use it to patch cracks between steps or mend the mortar in between the bricks. However, you cannot use it for other purposes, such as bathroom crack repairs.

Bottom Line: In a nutshell, the Masonry and Concrete Acrylic Sealant is ideal for concrete crack or a related repair. However, if you are seeking a multi-purpose caulk, then it may not be the best one. Apart from this, the paintable caulk is extremely durable and weather-resistant.

  • Waterproof
  • Weather-resistant
  • Durable
  • Paintable
  • Textured finish
  • Water clean-up
  • Doesn’t have fast curing time (6-days)
Red Devil 0646 Masonry and Concrete Acrylic Sealant, Pack of 1,...
1,127 Reviews
Red Devil 0646 Masonry and Concrete Acrylic Sealant, Pack of 1,...
  • TEXTURED LIKE CONCRETE: Blends easily with concrete and mortar
  • SEALS CRACKS & JOINTS: Works on concrete, masonry, stone, cinder block...
  • WON'T STAIN OR BLEED: Mimics the look of concrete or mortar

7. Sashco Slab Concrete Crack Repair Sealant

Sashco Slab Concrete Crack Repair Sealant


Sashco Slab started with its journey back in 1936. As the company states, it was a time when starting a business was a job of daring souls only.

It was only those who dared to take the leap of faith who attained any scale of establishment in the field. And Don, who started with this incredible Sashco journey, did not only focus on seeking establishment but also bringing forth optimal solutions for apparently unsolvable problems.

In his journey of achieving this, he introduced some phenomenal compounds of caulks that have served the needs of the construction industry for a very long time. Be it, minimal cracks in home pavements, or major concrete cracks in construction projects, the Slab products cater to all.

Sashco Slab Concrete Crack Repair Sealant is one that serves the needs of the home. So, if you want to get a crack in the garage or patio repaired, it may as well be your best bet.

The product comes enclosed in a bottle measuring 2 x 11 x 2 inches. It contains about 10.5 Fl. Oz.

The compound comes out well of the narrow nozzle and fills the crack as wide as 3-inches smoothly. And squeezing it out is also easy, which in turn makes application easy.

However, you will need a standard caulk gun to get the job done. With it, you can swiftly apply it over long-length and short-length cracks.

Some Sashco Slab reviews claim that the product never dries. In truth, the product takes days to dry but certainly dries with time.

Even if you expose the sealant applied on the cracks to water or rain when it’s still in its fluid state, it will hold its position and will not exhibit any negative impact. Hence, as long as you can leave the product applied concrete cracks applied for a while (in an area of low traffic), it will prove to be of no issue to you.

Once dried, the compound will take exhibit a light gray color that goes well with most concrete surfaces. Plus, you can even paint or sand it later, as you like.

One of the most appreciable factors of this caulk is that it has excellent adhesion. It may take longer to dry, but once it dries, you will be worry-free for ages. Cracks will not appear anytime soon.

Bottom Line: Sashco Slab takes a while to dry, but once it does, it proves to be worth all the wait! This strong concrete caulk is all you need for a good-looking and permanent concrete crack repair.

  • Features universal color
  • Waterproof (average)
  • Durable
  • Easy application
  • Great adhesion
  • Takes too long to dry
Sashco 16210 Slab Concrete Crack Repair Sealant, Gray, 10.5 Fl....
959 Reviews
Sashco 16210 Slab Concrete Crack Repair Sealant, Gray, 10.5 Fl....
  • Sold as "Sashco 16210 Slab Concrete Crack Repair Sealant, Gray, 10.5...
  • Easy and simple use kit
  • The product is manufactured in China

8. Loctite Self Leveling Concrete Crack Sealant

OSI Loctite Self Leveling Concrete Crack Sealant


If you have a horizontal crack on your driveway or garage floor, then try out this amazing Loctite Self Leveling Concrete Crack Sealant. But why? What features make it the ideal option? Let’s evaluate in detail!

The Loctite Self Leveling Concrete Polyurethane Sealant comes in a 295ml tube. It has dimensions of 50 x 50 x 286 inches and an overall weight of 12.2-ounces. Hence, it is easier to handle when caulking.

It has a polyurethane-rich composition, which is an excellent construction material. Due to the material, the Loctite Self Leveling Concrete Crack Sealant promises immense durability and longevity.

Firstly, it has an outstanding tear and abrasion resistance property. Thus, regardless of the external factors, the sealant will never chip, crack, or peel.

Secondly, the Loctite polyurethane sealant also exhibits resistance from weather corrosion. It doesn’t matter what type of weather and climatic condition you live in, as the sealant will perform exceptionally nonetheless. Also, as the sealant is extremely flexible, it does not get affected by the contraction and expansion of the concrete.

Moreover, once applied, the Loctite Self Leveling Concrete Polyurethane Sealant stays firmly stuck. It has a very strong adhesion that keeps the crack filling intact. Also, its adhesion compatibility extends to wood, stone, and even metal.

Perhaps, the most brilliant feature of the sealant is its self-leveling property. When applied, the sealant automatically settles itself so that the resultant finish is smooth and even. The property also saves you the time, which you would have spent manually smoothing the final layer.

Furthermore, the Loctite Self Leveling Concrete Crack Sealant is paintable so that you can match it accurately to the surroundings and augment the ambiance.

Apart from the good, the Loctite Concrete Sealant has a few cons too. For example, it takes an entire week to cure, though the surface is functional till the 3rd day of application. However, during this time, the filling is too sticky, and dirt or any other object may get stuck.

Also, the sealant has a runny nature that drips deeper into the cracks and may consume for than one tube for a 1/8th inch gap. Plus, the liquid consistency does not make it appropriate for vertical crack repair.

Bottom Line: Well, considering all the features, the Loctite Concrete Caulk Self Leveling is good for horizontal cracks on the sidewalks, garage walks, driveway, and other relevant areas.

  • Polyurethane material
  • Self-leveling property
  • Weather-resistant
  • Tear and abrasion resistance
  • Paintable
  • Flexible and durable
  • Strong adhesion
  • Long curing time
  • Not for vertical cracks
  • Runny nature thus requires more tubes.
  • Too sticky
776 Reviews
  • Self-leveling formula - no tooling required
  • Flexible bonds - use on expansion joints
  • Withstands joint movement without distortion or failure

9. Sikaflex Self Leveling Polyurethane Sealant Kit

Aware Housefull Sikaflex Self Leveling Polyurethane Sealant Kit

No products found.

Above you read about Sikaflex’s reasonably-priced self-leveling sealant. While the variant mentioned above serves well for catering to a bunch of cracks around the house, this one caters to the needs of bigger projects.

The Sikaflex Self Leveling Polyutherane Sealant Kit comes with 12 pieces of slender Sikaflex bottles containing 10.1 FL Oz each. Note that it is a kit offered by AWAREHOUSEFULL and not the company itself. Even so, the Sikaflex products are authentic and of top-notch quality.

Although you get a big quantity of concrete caulk overall, you have it divided into several bottles. Thus, making the usage and application easy.

Like the product above, each of these features a narrow nozzle that makes squirting the caulk into cracks easy. Also, the kit comes with a caulk gun.

According to the verified customer’s Sikaflex Self Leveling Sealant Review, the accompanying caulking gun performs even better than a standard caulk gun. And that makes the deal even better.

Similar to all other Sikaflex caulks, these Sikaflex caulks also have strong adhesion capabilities. However, this caulk may take a while to dry (approximately a day).

Once dried, you will not have to worry about refilling the cracks again for a very long while. The product promises a permanent fix.

What’s more, the caulk has great durability and flexibility. It will not only last ages but also withstand weather conditions of all sorts.

You need not worry if it gets exposed to water as it is waterproof as well. Also, it is best to apply this caulk to horizontal joints only.

In sloping joints, the fluid compound may not hold its position. And slip downwards, gathering in clusters at the lower edge. Thus, it’s best to apply it on horizontal cracks and surfaces only.

Before purchasing, take into consideration that this concrete caulk comes in limestone color only, which proves to be a major lacking if you are not planning to paint it. Although some users suggested that it exhibits more of a light gray color, you have to keep both possibilities in mind.

Bottom Line: If dealing with a bigger project, invest at once wisely in this Sikaflex Self Leveling Polyurethane Sealant Kit. It’s super easy to use and promises proficient results!

  • Comes with a high-quality caulking gun
  • Easy Application
  • Durable
  • Flexible
  • Waterproof
  • Only comes in limestone color
  • Not suitable for sloping joints

No products found.

10. Quikrete Epoxy Concrete Repair

Quikrete Epoxy Concrete Repair


Are you looking for a caulk that cures quickly and never sags? Well, then the Quikrete Epoxy Concrete Repair is your best buddy!

Quikrete is a well-established company in the sealant producing industry. Recently, the company has launched three new innovative concrete repair products, called Fast-Set Concrete Crack Repair, Epoxy Concrete Repair, and Polymer Modified Structural Repair. The Quikrete Epoxy Concrete Repair, as you might have already guessed, belongs to the Epoxy Concrete Repair series.

The product has gained both positive and negative feedback. Well, then what is the outstanding feature that qualifies it as the best caulk for concrete repairs? Let’s find out together!

The Quikrete Epoxy Concrete Repair comes in a single tube of 1.75lbs. It has the dimensions of 2.38”x 2.38” x 6.0”. Also, you will observe that the product comes along with a separate cartridge.

Now, let’s first discuss the unique installation and preparation of the sealant. Firstly, you will have to attach the cartridge to the tube, and then place the cartridge on the caulking gun. Next, dispense a small amount of sealant until you achieve the desired color without streaks.

Also, while installation, you will require high-quality gloves to prevent the interaction between skin and chemicals. Remember, the sealant is toxic to human skin. Do not worry, in case the sealant spills over the tools you have used.

It has a solvent clean-up property, which will help you remove any uncured sealant from the surface. To do so, you will require solvents, such as WD40, citrus adhesive removers, rubbing alcohol, or nail polish remover. Well, comparing the method with other caulks, the Quikrete Epoxy Concrete Repair may prove to difficult to handle for beginners.

As for the composition, this caulk contains high-quality epoxy. Epoxy is a hard, durable, and abrasion-resistant material. Hence, an epoxy finish on concrete cracks tends to be of high-strength.

Also, the material demonstrates excellent water repellence and does not let moisture interfere with the caulk’s performance. Note, the product is a two-part epoxy, which means that it comes in two parts and requires mixing before application. The outstanding feature of the product is its fast curing nature. It cures completely in only 3-hours!

Moreover, the Quikrete Epoxy Concrete Repair has non-sag characteristics. It means that the caulk has little elasticity. Thus, maintaining the position in the crack and keeping it firm.

Perhaps, the mere drawbacks of the caulk are that it is very thick due to its epoxy composition. So, people find it difficult to dispense, and it requires a heavy-duty caulk gun for it. Also, it becomes gray after curing and is not paintable.

Bottom Line: All in all, the Quikrete Epoxy Concrete Repair is a multi-purpose and fast-curing sealant. You can use it to repair vertical as well as horizontal cracks on concrete, brick, stucco, and other materials.

  • Faster curing
  • Non-sag characteristics
  • Multi-purpose
  • High strength
  • Abrasion-resistant
  • Water repellence
  • Solvent Clean-up
  • Limited warranty
  • Toxic to human skin
  • Not Paintable
  • Difficult installation
  • Very thick
  • Requires heavy-duty caulk gun
Quikrete 862049 8.6 oz Epoxy Concrete Repair, Yellow
78 Reviews
Quikrete 862049 8.6 oz Epoxy Concrete Repair, Yellow
  • Item Weight: 1.75 lb
  • Country of Origin: United States
  • Brand name: Quikrete

Caulk For Concrete Cracks Buyer’s Guide:

Caulk For Concrete Cracks Buying Guide

For buying the perfect caulk, a wiser approach is to know what you seek. Although the best caulk for concrete cracks reviews given above conveys an ample amount of knowledge to assist your decision of purchase, it’s always wiser to take a step further and understand the nature of the product.

Learn about its domains, types, usability, temperature tolerance capabilities, and other aspects in detail so that you may decide only the best for yourself.

Types of Caulk

As mentioned earlier, before you begin with your crack repairing journey, you must first decide whether you want to work with a caulk or a sealant. The difference between the two is elasticity.

But once you’ve decided that you will need to decide: which type of caulk do you need. Yes, that’s right!

There are several different types of caulks, and each of them has a unique purpose. Here are some of the common types of caulks:

  • Adhesive
  • Concrete
  • Blacktop Asphalt
  • Exterior
  • Gutter & Flashing
  • Mortar
  • Sanded
  • Unsanded
  • Window and Door Interior

If you are repairing concrete cracks, then you will most likely require concrete and adhesive caulks, which can fill in gaps as well as resist water and high temperatures. These two types are also suitable for filling in gaps between concrete slabs or cracks between pavements. We have listed the best options for these in the list above.


Apart from use specificity, the caulks also get categorized based on their composition. Even in this, you will find two divisions, which includes:

Pure materialsHybrid composition
Caulks composed of single materials, such as silicone or polymer, get called pure. Comparatively, it is easier to determine their properties and quality. You can easily search up information on the Internet and evaluate the caulk’s usability for your specific need.
Hybrid composition in caulks refers to when a caulk contains two or more materials, for example, silicone-polymer and siliconized acrylic. Different companies may invent different hybrid compositions.

And, each composition may possess a different set of properties. Hence, you need to be vigilant when evaluating whether it is an ideal option for you or not.

Durability & Lifespan

Another aspect of caulks that you need to look into is the durability and lifespan. Ensure that the product is durable by looking for the following properties:

  • Weather resistance
  • Abrasion and tear resistance
  • Waterproof

If the caulk can withstand the adverse effects of blazing heat and chilly winters and does not immediately turn into mush when exposed to water, then it is the one to buy!

Additionally, since concrete contracts and expands with temperature, it’s important to look for a caulk that mimics this flexibility. It should be more elastic to ensure that the repaired crack doesn’t crack again anytime soon.

Along the same lines, it’s wiser to opt for a caulk with greater temperature tolerance. Most caulk at least has a minimum of 40°F. It’s best to look for more.


Applying Flexible Concrete Caulk

Looking for a caulk with greater elasticity doesn’t mean that the caulk you purchase should have low viscosity or any compromises on viscosity. It should neither be very viscose nor insufficiently viscose.

That’s because either case will influence application, and hence results. For example, if it is too viscose, it will not come out of the caulk gun, while if it lacks viscosity, too much of the product may get squirted out. Thus, sending lots of product to waste.

The right viscosity also promises an optimal curing time. Therefore, if you seek a caulk with quick curing time, then look for a caulk with good flexibility.

Price & Brand

Lastly, like all other purchases, don’t forget to consider the price and brand of the caulk.

Some of the well-known and reliable caulk-selling brands include:

  • Sikaflex
  • General Electric
  • Red Devil
  • Sashco Slab
  • Loctite
  • Protective Coating Company
  • DAP
  • Kwik

Most of these will charge no more than twenty to fifty dollars for a good amount of adhesive concrete caulk.

Frequently Asked Questions

Q. How to fill large gaps in concrete?

If the crack in the concrete is more than ¼”, then it will get considered as a large gap. Also, you will require a concrete patching compound rather than a caulk. Follow these steps to fill large gaps in concrete effectively:

1. Widen the crack to create a V-shaped gap.

2. Remove any loose debris or dirt. If desired, wash the gap and vacuum it to remove water completely.

3. Use a trowel to put the patching compound in the gap. Then, stab the compound with a trowel to remove trapped air.

4. Fill the gap until it meets the surrounding surface.

5. Smooth it and run a paintbrush along the surface to create a textured effect.

6. Let it cure.

Q. How to fix hairline cracks in concrete?

Hairline cracks in concrete usually develop due to faults in construction operations, poor work, alkali-aggregate reactions, sedimentation, etc. The average width of these cracks is no more than 0.08 mm or 0.003 inches. Also, they’re quite shallow.

To fix these, you need to first clean the crack. Check if there’s any staining or oil accumulation. If so, you should make arrangements to clean or get it cleaned.

Next, select a suitable sealant. Make sure the sealant has the following properties:

1. Low Viscosity

2. Low Surface Tension

Both these properties will ensure that the sealant seeps deep into the cracks.

Apply the sealant and let it rest for the required amount of time (as mentioned on the package). Once dried, you will notice that the hairline cracks vanished.

Q. How to repair cracks in concrete foundation walls?

Foundation walls hold immense importance, and the level of cracks in them indicates the damage level. Follow these steps to repair cracks in concrete foundation walls:

Inspect: Firstly, you should examine whether the crack needs repair or professional care. If the crack is small, then you may proceed towards the repair. However, if the gap is more than 1/8th inches and the wall seems to be moving apart, then you should call experts.

Larger concrete gaps in the foundation walls may indicate an underlying problem that can damage the entire building’s structure.

Repair: For small cracks, you can use the caulking method. But, for large gaps (1/4th inches), you may have to use a patching compound.

Seal: Once repaired, apply a waterproof masonry sealer to the foundation walls to prevent water infiltration or other problems.


Now, we have reviewed all the products and evaluated the key aspects to purchasing the perfect caulk for concrete cracks it’s time to decide which one of the ten reviewed products is the top choice of caulk for concrete cracks. Remember, we need to select the winner in light of the factors discussed in the buyer’s guide.

So, which one is truly the best caulk for concrete cracks? Well, the victor is the DAP Self Leveling Concrete Sealant! This particular caulk excels in all the factors, including usability, composition, curing time, flexibility, and durability.

The rapid-curing DAP Self Leveling caulk specializes in repairing concrete cracks. Its silicone-rubber hybrid composition provides extra strength and durability. Also, the flexibility and elasticity of the caulk are neither high nor low, which makes it more efficient.

Upon application, the moderate flexibility of this paintable caulk enables it to flow easily into the crack and reach the depths. It will prevent air bubble formation. Also, the flexibility allows the concrete to contract and expand without trouble.

Well, although this caulk qualifies as the winner of this list, it may or may not suit your specific requirements. Hence, when purchasing the best caulk for aluminum to concrete, remember to take the factors stated above into consideration.