Best Concrete Crack Filler 2021: Top 10 Picks & Comparison

Concrete is one of the most popular building materials globally due to its low-cost, low-maintenance characteristics.

But if the concrete isn't mixed or installed correctly, cracks can appear. Cracks are neither good for visual appearance nor safety. So, how do you tackle cracked concrete?

Concrete crack filler is the most useful solution here that mimics the look of concrete and seals the cracks before they get bigger. Applying concrete crack filler is the kind of job that anyone can do.

But selecting the right crack filler is the real deal. Let us guide you through several crack fillers available and choose the best concrete crack filler accordingly.

Image

Name

Editor's Rating

Price

Bluestar Flexible Concrete Crack Filler

5 out of 5

Red Devil Pre-Mixed Concrete Patch

5 out of 5

Dap Concrete Patch

4.5 out of 5

FDC EPOXY Mortar Patching System (50 lb Pail)

4 out of 5

PC-Concrete Two-Part Epoxy Adhesive Paste

4.5 out of 5

Comparison Chart of Crack Filler

Name

Base Material

Formula

Crack Width

Bluestar Flexible

Water

Pre-mixed

1 Inch

Red Devil 0644

Water

Pre-mixed

0.5 Inch to 1 Inch

Dap 31084

Water

Pre-mixed

0.5 Inch

FDC EPOXY

Epoxy

Non-premixed

1 Inch

PC-Concrete Two-Part Epoxy

Epoxy

Pre-mixed

1 Inch

DRYLOK 00917

Water

Non-premixed

0.5 Inch

Dap 18021

Water

Pre-mixed

0.5 Inch

Dalton Enterprises PLI-STIX

Latex

Non-premixed

1 Inch

Rust-Oleum

Epoxy

Pre-mixed

0.5 Inch

CRACK STIX Concrete Joint & Crack Fill

Latex

Non-premixed

0.5 Inch

Our Top 10 Best Concrete Crack Filler Reviews 2021

These concrete crack fillers are hand-vetted by our expert team, who have rigorously tested these fillers to examine their effectiveness, durability, and other features. Let's have a look.

1. Bluestar Flexible Cement Crack Filler

Bluestar Flexible Crack Filler for Concrete

The moment you see a hairline crack anywhere in your concrete structure, go for the Bluestar concrete crack filler, which is flexible to a good extent.

You can just apply this and lay back to see the response. It perfectly matches with the concrete to expand or contract depending on the weather.

Be quick to take action because this crack filler works best when you apply to cracks measuring up to one inch in width.

Once you fill the crack with the filler, it seals the crack immediately and doesn't let any moisture sleep in.

The filler's consistency matches with that of thick glue, so it can be easily applied on any surface, including floors, garage, patio, or driveway. The bottle cap is a nozzle that comes in handy while applying the filler in thin cracks.

You will get two shades of filler. One is gray, and the other is light gray. So, you can choose the shade of the filler according to the color of your original structure.

Applying a different colored filler to prevent cracks often points out the place to everyone and makes it look even worse.

By sealing the moisture and paring with the concrete, this filler extends your structure's lifespan and prevents any risk of damage due to cracks. Are you a first-time user? It is still a great choice because of its easy-to-use characteristics.

Highlighted Features:

  • Flexible crack filler keeps pace with the expansion and contraction of the concrete in different weathers.
  • Reduces the risk of cracks being bigger or new cracks appearing.
  • Comes in a glue-like consistency inside a nozzle-capped bottle for easy application.
  • Hairline cracks can be handled easily with a thin tip.
  • Seals crack and prevent moisture from intruding into the structure.

2. Red Devil 0644 Pre-Mixed Concrete Patch

Red Devil 0644 Pre-Mixed Concrete Patch

Red Devil concrete patch is a pre-mixed concrete sealer that comes in different sizes for convenient use.

You can either buy it in a tube or bigger tubs depending on your requirements. But whatever size you buy, everything comes ready to apply.

It can smoothen the cracked concrete surface with its special formulation to be flexible in all weather.

For repairing holes, cracks, and breaks, this concrete crack filler works perfectly. Due to the flexibility, the dried filler doesn't shrink or crack again, which can be a great headache.

You can choose from light or medium shades of gray to match the color of your original structure so that the filler doesn't create an eyesore.

Applying the filler with a putty knife is easy due to its thick consistency. For the same reason, you can apply the filler on the exterior and interior walls.

Many concrete crack fillers have a runny consistency, so they aren't suitable for applying on vertical surfaces.

As Red Devil crack filler is water-based, it needs at least 24 hours to completely dry. As this concrete patch comes pre-mixed, it saves a lot of prep time which you can count.

Though it isn't suitable for places that face a lot of vehicular traffic like driveways, you can fight almost all other imperfections in the concrete. So, next time you look for the best concrete crack filler, keep this item on the top of your list.

Highlighted Features:

  • Comes in a ready-to-use format, so you don't need to worry about mixing it in the right proportion.
  • Can easily be applied by anyone on any surface to fight cracks, holes, breaks, etc.
  • Very flexible, so it doesn't shrink when it is dried.
  • Easy-clean feature enables effortless cleaning of excess patches on concrete.

3. Dap Concrete Crack Repair Interior and Exterior

Dap 31084 Concrete Patch Interior and Exterior

Dap concrete patch is another value-for-money concrete crack filler that comes ready to use. This patch is fortified with a vinyl polymer that increases the adhesive power of the patch.

It also increases the patch's durability and strength to make an eternal bond with the concrete structure. With its durable and hard finish with concrete, you can expect it to last for years to come.

This ready-mixed concrete needs nothing to be prepared and lets you dive into the work right away. You can scoop up the cement filler from the container with a putty knife, broad knife, or trowel.

As the formula is pre-mixed, you don't need to worry about mixing it with other ingredients in the right proportion. It is ready to be used right out of the container. It comes in different sizes, so you can choose the size that fits your needs.

Its flexibility will provide a durable solution to all the cracks and breaks in the concrete. No matter the weather condition, this concrete patch seals the cracks to prevent moisture from letting in. So you can use it for exterior works as well as for the interior.

It doesn't only fight cracks and breaks, but you can also use it to smoothen uneven surfaces on concrete.

Apply it on uneven surfaces to give them a better look for a long time. And the light gray color of the patch matches it perfectly with the concrete leaving you a smooth and beautiful finish.

Highlighted Features:

  • Comes in a pre-mixed formula that is ready to be used.
  • Applying the patch is quite easy, even for beginners.
  • Vinyl polymer increases the adhesion of the patch, which makes it a permanent solution to cracks.
  • Very flexible to the temperature, so it doesn't shrink or crack again.

4. FDC EPOXY Mortar Patching System Concrete Gap Filler

FDC EPOXY Mortar Patching System

This epoxy patching system from FDC can arguably be the best concrete crack repair solution with its effective epoxy formula to find any type of cracks on any surface.

Epoxy works perfectly with concrete, asphalt, wood, etc., to make up the beauty that has been lost.

It is quite dense in consistency and is several times stronger than usual cement patches. So, you can easily use it to repair any crack, even in places facing extreme pressure. Epoxy will also be great for outdoor application.

This patching system is completely waterproof, meaning rain or anything can't invade your structure. This way, it gives enough protection to your structure even in the worst weather conditions.

And you know what? It doesn't take that much time to harden as other usual cement patches need.

As a result, you get a quick solution to all the cracks and breaks in the concrete or other surfaces and make an effective treatment. This item is more favorable to people who love to take the DIY route.

As it comes ready to be used and the instructions are on the container, you can start using it yourself without any special knowledge.

Once applied, epoxy starts to harden in less than one hour. The hardening time is much less than other cement patches that take days to harden and come to the finished state. So, if you are after this epoxy patch, you win.

Highlighted Features:

  • Strong and effective epoxy formula to fight cracks and breaks on any surfaces.
  • Hardens in much less time than other usual cement patches.
  • Completely waterproof and weatherproof for concrete, so it gives better protection to your structure.
  • Application is very easy and requires no special knowledge.

5. PC-Concrete Epoxy Adhesive Paste to Fill & Repair Cracks

PC-Concrete Two-Part Epoxy Adhesive Paste

PC-Concrete is widely known in the industry for its strong adhesive quality that doesn't compromise with weather or moisture in any given situation.

As a result, it can be a hell of the best cement crack filler for you on an affordable budget. Coming to the formulation, this cement filler is a two-part epoxy adhesive that is inside a tube in the form of a thick paste.

Due to its high-tack formulation, it can easily be applied on damp surfaces. Also, the thick consistency helps you apply it on vertical concrete surfaces to repair cracks in concrete.

As the application temperature can vary between 35 and 115 degrees Fahrenheit, you can apply this paste both indoor and outdoor.

 It will make an ever-lasting bond with the concrete to fill all the cracks and give you a smooth finish everywhere.

It provides you more than just a concrete crack filler. You can use it to finish uneven surfaces. Rods and bolts can also be anchored into concrete by using this adhesive paste.

Whatever you do, it stays weather and moisture resistant, so you don't need to worry about any damp section in your structure that might fall next time.

Due to its high flexibility, it withstands the natural expansion and contraction of concrete.

No matter what the season is, it will stick with the concrete and save your structure from facing new cracks and breaks. A great value for money product you need to check out.

Highlighted Features:

  • ASTM C881-99 is compliant with an epoxy resin-based concrete repair system.
  • Thick adhesive paste easily sticks to the concrete, whether it is horizontal or vertical surface.
  • Protects against moisture and weather.
  • Needs a lot less time than cement-based fillers to be cured completely.
  • Good fit for both indoor and outdoor usage.

6. DRYLOK Cement Driveway Crack Filler

DRYLOK 00917 Cement Hydraulic

DRYLOK Fast Plug is the kind of crack filler you need to work with leaks that should immediately be sealed.

As it takes about 3 to 5 minutes to set completely, you can expect a perfectly sealed joint that can even prevent water flow at a moderate speed.

But it doesn't come ready-mixed. It comes in powder form, and you need to mix it with water to form a paste before applying it to any leak or crack.

One of its special characteristics is to expand after setting up. Once you finish applying the solution to the cracks, it dries quickly and expands in the body to seal the cracks.

As it completely seals the cracks, no moisture can let in. As a result, your structure will be safe from any kind of failure caused by damp concrete. As the solution dries really fast, it can even fill the leaks in a water flow channel.

You might need a bit of expert guidance before you work with this crack filler for the first time. As it comes in powder form and needs to be mixed with water, the mixture can set too quickly, leaving you with a lot of hassle.

So, make sure you are working really fast with the mixture to get the maximum benefit. This highly affordable crack filler should be on top of the list for its streamlined filling capability, high-adhesive consistency, and durability.

Highlighted Features:

  • You have the control to determine the consistency but make it not too thick and not too runny.
  • The high adhesive power of this filler allows it to seal cracks in as little as 3-5 minutes.
  • Excellent for use in the leaks containing water flow as the filler doesn't break under pressure.
  • Highly affordable and beginner-friendly.

7. Dap Concrete Driveway Crack Filler and Sealant

Dap 18021 Concrete and Mortar Watertight Filler and Sealant

Putting another item from Dap on this list has some obvious reasons. First of all, this excellent sealant works to smoothly cover up all the cracks in concrete and masonry.

The durable formulation of this sealant allows it to stick to indoor or outdoor walls, pavements, mortar joints, driveways.

And the formulation is a bit different than other fillers of this type because it contains silicone additives.

These silicone additives increase the adhesive power of the sealant. It also improves the flexibility and water-resistance of the filler.

As a result, you get a bond between concrete and the sealant that copes with the concrete's expansion and contraction due to variation in temperature and weather.

It also makes the bond waterproof so no moisture can dampen the structure in any given situation.

The durable seal of this filler prevents not only moisture prevents moisture and gas, oil, grease, salt, or other compounds from going inside. You can also paint the patches so that the finished work doesn't look odd.

Also, the formulation has a minimal odor, so you will be comfortable while working with the product. It is so easy to apply that even novices can start working right away.

Don't worry about excess filler spreading up here and there because you can easily clean up the excess patches with water. No matter wherever you use it, you are always guaranteed to have the perfect seal.

Highlighted Features:

  • The ready-mixed formula comes in a squeezable tube for easy application.
  • Hardens quickly to give you the best solution to cracks, breaks, leaks, etc.
  • Silicone additives are in the formula for more adhesion, flexibility, and water resistance.
  • Works on concrete, mortar, masonry surfaces, so reduce your hassle.
  • Excellent for both indoor and outdoor use.

8. Dalton Enterprises PLI-STIX Concrete Crack Filler

Dalton Enterprises 35099 PLI-STIX Concrete Crack Filler

A completely different product than the items we have discussed till now. This thing looks more like a black rope than those liquid or crack-filler pastes. The Latex-ite PLI-STIX is suitable for bigger cracks that liquid crack fillers can't handle.

Liquid or water-based crack fillers are usually capable of filling cracks half an inch wide. Repairing cracks wider than that might be a problem with liquid fillers but never with this latex rope.

It can handle up to one inch of cracks easily. So, it can be a good solution if you are facing wider cracks on concrete or asphalt.

The application of this filler is also a bit different from the usual ones. Most liquid fillers might not need any preparation time at all.

But this latex filler requires some preparation and supporting tool to permanently fix the cracks and breaks in concrete.

It should be placed inside the crack, and you can adjust the length accordingly. Then the filler needs to be heated with a heat gun to melt the latex.

Once heated, the latex covers up the crack and seals it completely. It also remains flexible in letting the concrete expand and contract depending on the weather.

Though you need to fill deeper cracks with sand or stone before putting the latex inside the crack, it ensures high durability no matter what the weather condition is.

The material doesn't emit any odor during operation or use. Overall, the best concrete crack repair product at this price.

Highlighted Features:

  • Latex-based material melts with heat and seals cracks immediately.
  • Fixes crack up to one inch in diameter.
  • The length is 30 ft and comes in 2/3/4/5 packs, so you have ample material for filling cracks.
  • Gives protection against weather, temperature, and moisture.

9. Rust-Oleum Concrete Driveway Crack Repair Products

Rust-Oleum 301012 Wall-Surface-Repair-Products

Rust-Oleum 301012 is an epoxy-based product that helps you repair flaws on concrete and other surfaces.

This is the formulation of an industrial-grade two-part epoxy solution that gives it the required strength to stick to the concrete for decades, leaving you a permanent seal.

The formula isn't pre-mixed, but don't worry. It isn't any tough job to mix the compounds in the right proportion if you properly follow the instructions coming with the filler.

Though it might take a few minutes of prep time, you will end up having the satisfaction of quality work.

After mixing the compounds, you need to apply the material to the cracks. It can work with cracks that are not more than half an inch in diameter.

Pour the mixture into the crack and let it sit for about 8 hours. Though the waiting time is higher than many other crack fillers, the end result will stun you.

Once the epoxy solution hardens completely, the finished surface will be as tough as concrete. So, you can use it both indoor and outdoor.

 This all-around solution allows you to work in any weather condition and doesn't create new cracks even if the weather or temperature changes drastically.

With no odor while working and a great finish afterward, you can consider this the best concrete driveway crack filler within your budget. Give it a try and see how wonderful those concrete surfaces become again.

Highlighted Features:

  • Industrial-grade two-part epoxy gives better strength than any other solution to stick to the concrete.
  • The formula isn't pre-mixed, meaning you will need some prep time, but it is compensated by the reduced setting time.
  • Can fill cracks and holes up to half an inch.
  • Finished surface can prevent moisture and is hard enough to be durable for years.

10. CRACK STIX Concrete Joint & Crack Fill

CRACK STIX Concrete Joint & Crack Fill

We will end this list with this rope-like material that can fill cracks up to half an inch wide. But this isn't any regular liquid or paste-like solution.

Rather it is a latex-based rope that holds the length of 125 ft for bigger works. You can seal a lot of cracks and breaks with this sealant.

No liquid or no paste means you don't need to worry about the mixing of compounds in the right proportion.

You can just take the rope out of the container and put it inside the crack you want to fill. Then heat the material with a heat torch to melt the compound.

Once melted, the compound can perfectly seal concrete and asphalt surfaces for a strong and durable bond.

Though you will need some knowledge about handling heat torches, the finished surface will be much better than using those water-based solutions.

As there is no water in the composition, it will require a lot less time to complete hardening.

It gets cured in only 20 minutes, so you don't need to wait for hours or days to start using the surfaces again. Fill it, heat it, let it rest for 20 minutes, and you are good to go.

A great permanent concrete joint and crack filler in this budget that will never let you down. But as the length of the rope is very big, you should consider the size of the crack you want to repair before you decide on this.

Highlighted Features:

  • Gray rope-like material that can perfectly seal cracks of half an inch wide.
  • The melted sealant expands while drying, which locks the surface and prevents moisture.
  • One container has 125 ft of rope which is good enough to handle a lot of cracks repairing jobs.
  • Dries in as little as 20 minutes.

Things to Consider Before Buying Concrete Crack Filler

Things to Consider Before Buying Concrete Crack Filler

Not every crack filler you see in the market is suitable for your intended use. Some might be good for thinner cracks, while some others might cover up wider cracks in one go.

Some fillers come in the pre-mixed form, and some others don't. How do you know which will serve your purpose best?

Let us walk you through the wide lane of concrete crack fillers and help you choose the best concrete crack filler available. Here you go -

Crack Size

As filling a crack is the main target of buying concrete crack fillers, it is always better to measure the size of the cracks before you head to buy a filler. It is because almost all the fillers are made to repair certain sizes of cracks.

If the filler you buy doesn't match with the crack, it will be nothing but a waste of your hard-earned money.

Some fillers can handle bigger cracks, but often they need multiple applications. Also, check for that in the specification before you buy.

Mixing Method

You will see two types of concrete fillers depending on their formulation. Many concrete crack fillers in the market come pre-mixed, meaning you can use them right out of the box. They are all ready to be applied on the instructed surface without any further due.

In the case of these fillers, you don't need any special knowledge about mixing the components or extra time for preparation.

Most of these fillers are water-based. Using pre-mixed fillers is a good idea for beginners as it requires less or zero hassle.

On the other hand, non-premixed fillers are usually shipped as separate components. Once you get the compounds, you need to mix them together following the instruction. The right proportion should be maintained to gain the right effectiveness from the filler.

These fillers might be a bit more technical. But you will get a better result in most of the cases. Also, these fillers need less curing time than their pre-mixed counterparts.

Curing Time

This is often the headache of people who want to work with concrete fillers. Waiting a long time for the concrete filler to cure is very boring. But you also might not want to damage the repaired crack by hitting the patches before a certain time.

Usually, water-based products take a lot longer to completely cure and be ready to use. The curing time might be about 24 hours before you will be able to step on the surface if it is outdoor.

But in the case of epoxy-based or latex-based products, the curing time is very low. Most epoxy-based fillers completely cure in only 6 to 8 hours, where latex-based products dry and harden in 20 to 30 minutes.

So, determine how much time you want to spend after the cracks and choose your filler accordingly.

Flexibility

Some concrete fillers are discretely made for indoor use. But many other fillers are made to use both outdoor and indoor.

In case of outdoor use, the finished patches often face harsh weather conditions. Also, concrete tends to expand and contract depending on the weather.

So, if the filler you are buying doesn't have enough flexibility to match that of the concrete, it is most like to crack again. Make sure the concrete crack filler you are buying has enough flexibility and weather resistance.

Waterproof

Moisture is one hell of an enemy to concrete. The fillers we use in places close to water are at more risk of moisture being penetrated.

So, you need to check out for a filler that is completely waterproof and lets no moisture sneak into the structure.

This is the only way to keep your structure safe for a longer period. And it will also lessen a lot of hassle. Be careful while you choose the crack filler so that you don't need to repent later.

Durability

Concrete patches need to be durable. The crack you are repairing should be the last time you work on it.

If the patches start to break and crack, then what is the point of using them in the first place? Always look for a crack filler that is highly durable and can withstand all pressure for years.

Ease of Use

Don't neglect this factor while choosing a concrete crack filler. If you have never worked with a crack filler, you might not want to add hassle by choosing a high-tech filler. Rather choose something simple to use and effectively serves your purpose.

Often, liquid or pre-mixed fillers are the best for beginners as they don't need any special knowledge or tool to work with. They also provide enough strength to stick to the concrete.

Types of Concrete Crack Fillers

Types of Concrete Crack Fillers

Concrete crack fillers can be of different types. We will discuss the 3 most common types of concrete crack fillers here that you can use to fight any crack or hole in your concrete structure. Let's see.

Water-based

These crack fillers are water-based and mostly have a runny consistency. Using these fillers is extremely easy, but they might take longer to completely dry.

They can come pre-mixed or non-premixed, but however they come, they are perfect for sealing any crack or smoothing uneven surfaces.

They also come in squeezable tubes with thin nozzles so that you can inject the liquid inside hairline cracks.

Epoxy-based

Epoxy-based crack fillers are resins that make a strong bond between the filler and concrete. They also work on various surfaces to give you a versatile solution of cracks in concrete or asphalt.

They need a lot less time than usual water-based fillers, so they can be a good choice if you are in a hurry.

Especially, two-part epoxy fillers are very strong adhesives can the finished bond of epoxy and concrete is almost unbreakable. This type of bond can also withstand immense pressure before they break.

Latex-based

These fillers come in a tubular shape, almost like a colored rope. Often they are wrapped with a meltable material that you don't need to unwrap. Using these fillers is a bit technical, so you will need a brief knowledge about how to use them.

Usually, these fillers are placed inside the crack and then heat-torched to melt and seal the crack. They need to precise. Otherwise, they won't fit the crack you want to repair.

Frequently Asked Questions

Check these answers out because the same questions might appear in your mind. These are some of the most commonly asked questions when it comes to concrete crack fillers. We have tried to make things easier. Please take a look.

How to apply concrete crack filler?

The application of concrete crack filler might vary depending on the compounds present in the formulation. Liquid fillers can be injected into the crack, while paste-like compounds can be patched with a putty knife or broad knife. Latex-based fillers need heat to be melted and set in place.

Does concrete crack filler work?

Yes. Concrete crack fillers are a good way to seal any crack and break on the concrete or asphalt surface. They make a tough bond with concrete and withstand all the pressure along with the concrete to last for years.

How to remove concrete crack filler?

Removing concrete crack filler is tricky. You can pour a little amount of Xylene on the filler you want to remove. Let it sit for about 20 to 30 seconds.

If the surface turns into sticky mush, you might need to pressure wash the surface. If the mush isn't sticky, you can use sealer, rust remover or acid etching technique to remove the old concrete crack filler.

How long does it take for the filler to completely cure?

It depends on the compounds present in the filler. If it is water or epoxy-based, it might take longer to dry. If it is latex-based, it will take less time to completely cure.

Can concrete cracks be repaired with cement?

Yes. The method is known as grouting, where you can make liquid cement and pour it over the cracks to completely seal them.

Can cracks reappear after using crack filler?

In worst cases, yes. If you don't use a quality product to seal the cracks and breaks in concrete, they might reappear after a certain time.

Final Words

Though cracks in concrete might look thin and innocent, they can cause a heck of damage if you don't be careful beforehand. Sealing them permanently with the best concrete crack filler is the only route you can take.

Take it as a DIY project, choose the best filler available depending on your criteria, try to expunge the flaws in concrete as smoothly as possible. You will be stunned with the finish of a good quality concrete crack filler, we guarantee.

Let your concrete structure hold a good shape for a longer period and give it a beautiful finish on the outside that doesn't get tempered over time.

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