Best Concrete Glue

TOP 5 Best Concrete Glue or, Adhesive: (Reviews in 2021)

When it comes to fixing a damaged concrete surface or bonding one surface over another, concrete bonding agents will come in handy. You can accomplish the new installation, or repair cracks in the concrete super easily.

And that happens with the best concrete glue or adhesive.

It lets you put away the pain of demolishing the entire thing. So, you won’t need to start all over again. Thus, resurfacing has just gone less costly and time-consuming. Just keep an eye on our list of the 5 best types of glue to use on concrete. And you’ll never regret it!

So, let’s head on to the best concrete bonding adhesive reviews.

Image Name Our Rating Price
J-B Weld Original Steel Reinforced Concrete Epoxy Glue

5 out of 5

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Loctite All Purpose Repair Putty Glue for Concrete

5 out of 5

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J-B Weld Professional Size Steel Reinforced Epoxy Glue

4.5 out of 5

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Devcon – 5 Minute Epoxy Waterproof Glue for Concrete

4.5 out of 5

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Gorilla All Purpose Epoxy Putty Stick Concrete Glue

4 out of 5

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To read about our product selection procedure, visit the “About” page.

Best Concrete Glue or, Bonding Adhesive Reviews

The cement in concrete does not contain a natural bonding material. So, hard layers will stay on top of the old surface separately. Consequently, durable bonding will not be achieved.

The same case applies when you want to stick to various materials. Those include; marble, glass, or metal to the concrete floor. The bonding will not be accomplished as a result of the differences in texture.

To solve that headache, just go ahead and pick one of our most recommended types of concrete glues. And the best one we recommend first is the J-B Weld 8265S Original Cold-Weld Steel Reinforced Epoxy.

1. J-B Weld Original Cold-Weld Steel Reinforced Concrete Epoxy Glue

Who tolerates going to put that construction mask frequently? Especially, when it comes to working with concrete, that’s even risky.

There you’ll need a strong glue like the J-B Weld!

It creates long-lasting and robust bonding on the surface. Consequently, it lets you avoid that construction work too frequently. So you can join that important holiday without worrying. You can use it when bonding or fixing multiples surfaces. Apply it when bonding concrete to metal, brick, fiberglass, and so on.

It’s perfect for a wide range of applications. That includes; household, marine, automotive, and craft utilization.

Being in the first choice of our list, J-B Weld is a must-try. The product is easy to use. You just have to mix it well in a 1:1 ratio to create a strong bond. Additionally, it can be shaped, sanded, filled, tapped, and even drilled after curing.

It possesses a tensile strength of up to 3969 PSI. For that, it’s highly dependable and can withstand up to 550ºF when cured. So, a high-temperature area is not a matter at all. Whether you got to fix a crack around the fire pit or an outdoor walkway, you name it!

At room temperatures, the glue tends to set to a dark grey color in 4-6 hours. However, complete curing takes place within 16-24 hours. Based on that, we guess a standard max time frame; it sets a hard bond overnight.

Apply this adhesive in the evening and forget until morning.

J-B Weld is a versatile gluing product. The best part about this concrete glue is its ease of use. You can do it on your own. And it delivers you the world’s most durable bond irrespective of its size. So, even if you’re a DIYer, don’t hesitate to pick this doer!

Features:

  • Easy to use
  • Original Cold Weld
  • Dependable and versatile
  • Waterproof & acid resistant
  • Wide range of application

Specification:

  • Dark grey color
  • Tensile strength of 3960 PSI
  • Withstand Temp. up to 550ºF
  • Cure in 16-24 hours
  • Sets in 4-6 hours

2. Loctite All Purpose Repair Putty Glue for Concrete

Rebuild and bind your concrete surfaces with All Purpose Repair Putty glue. The product does not shrink and is resistant to most solvents. For instance, it can bond to damp surfaces, cure under the water, and works miracles when it comes to emergency water repairs.

So, for an urgent concrete sidewalk repair in the rain, it’s worth a buy!

Additionally, the adhesive can fill in the gaps or reconstruct the missing parts. So, it is excellent for 3-D repairs and projects. Like the first product, this one can also work pretty strong on numerous other surfaces including; metal, ceramic, wood, and stones. You might also use it as a pipe thread sealant.

The glue cures when kneaded together.

You might roughen the surface to achieve higher performance. Hence, you should use coarse grit sandpaper. And then wipe out to clean any outlying dust particles.

It contains high impact resistance and, therefore, does not crack when drilled. In addition to this, the adhesive is simple and easy to use. One of the best parts about this glue is that it can be molded into different shapes to fit in any form of a crack.

All-Purpose Repair Putty can be sanded, shaped, and even painted.

WOW…paintable?

YES!!! And that’s an amazing feature you’d love.

This multi-surface repair putty is waterproof. And you knead, apply, then it’s ready. Just that simple to work with! It reacts to produce a robust and permanent bond. That way, it offers advanced adhesive and sealing solutions for your concrete repairing projects.

Features:

  • Simple and easy to use
  • Can mold into a variety of shapes
  • Resistant to many solvents
  • High impact resistant
  • Does not shrink

Specification:

  • NSF certified
  • Cure time is 15 mins
  • Type: Concrete repair Putty
  • Weight is 2 ounce
  • Water-resistant

3. J-B Weld Professional Size Steel Reinforced Epoxy for Concrete

Our third product is yet another great thing by J-B WELD.

It’s a professional-grade, steel-reinforced two-part epoxy. This great staff is pretty strong in providing a lasting and robust repair to the surface. It is also efficacious on other surfaces such as metal, PVC, plastics, tiles, ceramics, and fiberglass.

For a quick fixing schedule, it might not be a suitable one.

Because of that, it needs to mix in a 1:1 ratio. And that can be a time-consuming task for a shorthand writer. But if you have time, we’d highly recommend you to invest in this. Then you’ll see the results in your eyes.

It forms a permanent bond stronger than steel.

At room temperatures, it takes 4-6 hours to set and 15-24 hours to cure fully. The product can be filled, tapped, shaped, and even drilled after curing. It has a dark gray color when set and after curing.

With steel reinforcement, the JB Weld original bears a tensile strength of 5020 PSI. When fully cured, the adhesive can withstand temperatures of up to 550 degrees F. Furthermore, it is waterproof, petroleum, and also chemical resistant.

Due to that, it’s a perfect rainy season concrete repair kit.

It is vital to understand that you do not require professional assistance to take an action with this product. Irrespective of the size, the glue is easy to use. Therefore, you can do it by yourself. If you want to witness the excellent and quality performance of the most durable bond worldwide, then this is the adhesive to try out.

Features:

  • Easy to use
  • Long-lasting
  • Creates a strong bond
  • Resistant to chemicals
  • Waterproof

Specification:

  • The mixing ratio is, 1:1
  • Tensile strength of 5020 PSI
  • Withstand Temp. up to 550ºF
  • Cure in 15-24 hours
  • Sets in 4-6 hours

4. Devcon – 5 Minute Epoxy Waterproof Glue for Concrete

DEVCON made this high-strength 5-minute epoxy for you. Its waterproof capability makes it stand out among the crowd of other concrete adhesive products.

It creates a very strong bond within just 5 minutes.

However, you might have to wait for 24 hours to let it cure fully. And it will provide you a strong bond with a tensile strength of 1500 psi. Being waterproof, it lets you apply on a wide range of surfaces that needs a watertight bond.

So, you can use it in any water-prone area.

It dries clear and works well on concrete, wood, metal, glass, and ceramics, among others. The package comes with a 41/2 OZ epoxy and 41/2 OZ hardener. Just mix them up and apply them directly on the surface to get faster results.

One of the most significant advantages of epoxy is that it is resistant to numerous chemicals. Consequently, acid rain wouldn’t be able to destroy the bond. And you’ll always have a good time using it!

Features:

  • Easy to mix & apply
  • 1500 psi bonding strength
  • Fast-drying solution
  • Resistant to chemicals

Specification:

  • Dries Clear
  • 41/2 OZ epoxy
  • 41/2 OZ hardener
  • Sets in 5 minutes

5. Gorilla All Purpose Epoxy Putty Stick Concrete Glue

Gorilla Epoxy Putty is a highly versatile and robust glue. Before we finish up the list, let’s look at some of the amazing features this one has to offer.

First of all, this special product has been proven to work well on concrete surfaces. It is hand mixable, easy to use, and sets within ten minutes. So, from the angle of usability, it’s worth a buy! And a few in the market can beat it.

Aside from that, this product is waterproof and resistant to rusting.

Once cured, it can be sanded, drilled, and even painted.

So if you’re repairing a concrete crack that has to be painted later, this is also another pick that you might have a look. The adhesive tends to have a dark gray color when dry. It is excellent for auto applications and can withstand temperatures of up to 300 degrees Fahrenheit.

Wonderful package…!

Don’t hesitate to consider it because of the cure color. You’re allowed to paint over it and hide that if you want. And the strength it provides is just awesome.

Gorilla Epoxy Putty is safe when used in drinking water. So, it can work great for plumbing applications. To name a few applicable surfaces, it’s efficient on ceramic, stone, fiberglass, wood, among others.

Although it can cure underwater, the glue is not recommended for continuous submersion. So, avoid submerging the bonded material into the water. Note that this glue might not work well for plastic surfaces. Altogether, if you are thinking of repairing your concrete walkway or, low-pressure area temporarily, then this adhesive will surpass your expectations.

Lastly, its 2-ounce epoxy stick putty is better for small crack fixes. Such as, if you got your ceramic flower tub broken into small pieces, this glue is the weapon. That doesn’t really mean it’s only for small jobs. If you need a larger pack, they also provide 2 other package options to choose from.

Features:

  • Easy to use
  • Fast setting time
  • Creates durable bond
  • Multi-purpose use
  • Resistant to rust

Specification:

  • Withstand Temp. up to 550ºF
  • Strength is 1550 PSI
  • Type: All-purpose putty
  • 10 minutes setting time
  • Cures to Gray color

Things to Consider Before Buying Concrete Glue

The market is overwhelmed with loads of different types of concrete glues, with every brand claiming to be the best. So, before you approach that cracked concrete with any kind of glue, it is wise to conduct your research first. Otherwise, you might end up regretting it after realizing that the bonding agent did not meet your expectations.

1. Usage

Every adhesive can be used as many times as possible. Nevertheless, if you will not be applying it more often, then consider something that will last long. When safe, the glue can stay in the same condition for a long time.

2. Size

Depending on where you want to apply the adhesive, an optimal size to suit your needs is necessary. So, you can pick a large ounce pack or any other that will satisfy your requirements.

3. Price

Most of the best types of concrete glues have the same price range. In that case, your budget will be the primary factor when it comes to choosing one. The best thing to do is to analyze your adhesive needs first then narrow them down to your set budget.

Aside from the factors mentioned above, you can also consider the following points to help you in making your decision.

  • Make sure the glue is waterproof.
  • Make an informed decision of mild or strong adhesive.
  • You might also consider sag-proof concrete glue.

How to Use Concrete Glues or, Adhesive Effectively

Whether you want to fill a crack, repair a concrete section, or pour a new layer on top of an existing surface, it is vital to follow the right steps. If not, it might be difficult to bond the new concrete with the old one. Check out the following steps suggested when strong bonding is a fact:

1. Clean the Surface

First, start by cleaning the old surface. It’s mostly applicable for chips, stones, and large particles. And any other hard to remove oily dirt. You can employ a broom to remove the first layer of the detached dust particle.

You might use water and muriatic acid mix solution in a 7:1 ratio. And remember that’s a tough cleaning agent. So, you should be careful not to get it in touch. Allow the acid wash at least 10 mins to take its action against any oily tough to remove dirt.

As an alternative, you might also use a pressure washer to clean the surface thoroughly.

2. Prepare the Adhesive

Once the surface is clean, this is time to prepare the slurry. As you can see in the above list, some glues are two-part that need mixing. So the resin and hardener need to mix in a 1:1 ratio. However, for ready-to-use adhesives, you might not have to follow those extra steps. But when required, the preparation step plays a vital role in placing a strong bond.

When applying the liquid concrete layer, prepare bonding slurry by using white glue and water. The ratio you should maintain here is 1:1. Then add dry cement into that mixture in a 2:1 ratio. So, if you have let’s say 5 gallons of slurry, add 10 gallons of dry cement to that.

Avoid wasting your time, otherwise, the mixture will harden.

3. Prepare the Old Damaged Surface

Pick a paintbrush and apply water to dampen the old surface. Remember, you’re not going to soak it. It’s rather dampening that allows for the slurry to hold up better with the new concrete.

4. Apply the Concrete Glue

Then apply a thin layer of the slurry you’ve just created in step number 2. Please note that you need to have your new concrete ready by this time. Cause the slurry is not the thing that’s going to fill up the entire space. It’s rather your glue that’s going to help you create a strong bond.

5. Put the New Layer

Now, the last thing comes to the end. Apply the cement mixture into the place, over the concrete glue/slurry. An optimum mixture with consistent thickness should spread over easily. You might use a hand trowel to do that nicely. After that, you just keep it untouched overnight. But the complete curing might vary based on your mixture thickness.

Or, even the humidity and temperature of the area might affect that too. So, check that before you got to hurt it.


Concrete Glue vs. Mortar: What’re the Differences 

Although both concrete glue and mortar are used for bonding purposes, they are different in many ways. Do you know of any?

Well, mortar is a combination of sand and cement and is used to bind different materials such as concrete, bricks, or stones in stone masonry. On the other hand, glue is a bonding agent that is used to adhere directly. Also, it can be used to cover the cracks or splits in a concrete surface or cement slab.

That’s the basic thing, but there’s a bit more you should know:

1. Usage

Concrete glue is easy and quick to apply. So, you do not require the expertise to use it. The product is usually mixed in the lab and is, therefore, not your duty to do so. Your work is to bond it directly to the existing surface with no additional work.

As for mortar, you have to prepare it first at the construction site before you start the work. In this case, a long process is required to mix the cement, sand, and water in a specified proportion.

2. Time

Some types of concrete glue can take as low as ten minutes to set and less than 24 hours to cure. Nevertheless, the same cannot be said about mortar. For instance, it takes more than 24 hours for the thin tile mortar to dry. The others can take as long as 28 days on the same.

3. Chemical Resistance

Many types of concrete glues are resistant to most chemicals, including petroleum. Comparatively, mortar does not have high resistance to acids and other chemicals.

Acid attacks mortar by dissolving both the hydrated and un-hydrated compounds of cement. In many cases, the chemical reaction forms water-soluble compounds of calcium, which are later leached away.

4. Labor Cost

Since concrete glue is easy to use, you do not require hiring laborers. You can just decide to do it yourself, and that will, in turn, save you money.

As for mortar, you might need help when it comes to mixing the building materials involved. Unfortunately, that does not come easy. You have to go back to your pocket to have the work done.


Conclusion

Who likes to spend the weekend fixing that crumbling concrete? Guess no one, and it’s rather dangerous sometimes. More specifically the cement it contains is harmful if inhaled through the air.

According to EPA.GOV, “Cement plants are a significant source of sulfur dioxide, nitrogen oxide, and carbon monoxide, which are associated with health and environmental impacts.”

So, be sure to pick the best glue for concrete based on your needs. And hopefully, you’ll benefit from our list above. Cause we’ve got you back with the top-rated glues that are committed to providing durable actions on concrete material.

And you get a long-lasting result.


FAQs

1. Can I glue down hardwood flooring to concrete?

Yes, you can glue down concrete slab for installing hardwood flooring either on grade or above grade. With the recommended vapor retarder, you can achieve this. Some manufacturers allow the installation of ¾ solid parquet flooring. However, you should follow the recommendations from your wood or glue manufactures.

2. How do you attach concrete together?

One of the most efficient means of doing that is by using concrete glue. You just need to clean the surface to get rid of the large particles. Then, ensure that it’s flat enough. Add the primer and, once dry, apply the adhesive or, glue. Finally, add your new concrete and wait for it to dry.

3. Can you use liquid nails on concrete? Is Liquid Nails permanent?

Liquid Nails is permanent, high-strength multi-purpose construction glue that can be applied not only on concrete but also on many other surfaces. Aside from that, it is waterproof and fast bonding.

4. Can I glue wood to concrete?

With the right glue, you can stick almost every construction material to the concrete surface. In this case, wood is not an exception. Following the right steps is the only thing you need to make the process successful.

5. Are concrete glues toxic?

Well, some adhesives might be toxic since they contain hazardous solvents, preservatives, and plastics. These can either be flammable, harmful by skin contact, or inhalation. Consequently, follow the manufacturer’s instructions and use protective equipment during the application process.

6. How do you attach bricks to concrete?

Here is a simple procedure of accomplishing that:
a) Start by cleaning the surface using a brush
b) Use gloves before you start the work
c) Cut the tube of the adhesive to the bead size of the required material
d) Use a caulk gun to apply the glue into a zigzag pattern
e) Place the bricks firmly on the top and ensure they are in good contact with the adhesive
f) Leave it to set according to the manufacturer’s guide.

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