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Top 5 Best Glue for Legos

Best Glue for Lego
Legos are a fun and creative activity, and many people are able to make intriguing art from the pieces. Sometimes you love your creation so much that you want to preserve it, and this is where glue comes in handy. There are numerous types of glue on the market, and it’s important to find the right one so you don’t damage your Legos. Instead of leaving you on your own, this guide discovered the 5 Best Glue for Legos.

Our Overall #1 Rated Pick

Loctite Ultra Gel Control Super GlueOut top adhesive for Legos is the Loctite Ultra Gel Control Super Glue. This basic super glue is perfect for permanent Lego sculptures because it adheres in a short amount of time, is resistant to water and fall damage, and is easy to apply. The glue dries rapidly and forms a tight, clear seal that is not visible when applied properly.
Loctite is available in 2 oz. bottles with a dedicated applique designed to keep the glue flowing. There is no worry about clogs or blockage. Plus, the formula can be removed with a thinner but not regular household items.
The overall pros are:

  • Water-resistant
  • Shock-resistant
  • Rapid drying
  • Clear presentation
  • Works on plastic
  • Permanent adhesive

Some of the potential cons include:

  • The permanence of the adhesive

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Glue for Legos – Buying Guide

Glue is a unique material and not as simple as it sounds on paper. The word can refer to any nonmetallic substance used to hold two objects together, and it can be made of just about anything. This is why it’s important to know what type of glue you are buying and how well it will adhere to the plastic of your Legos.

Types of Glue

There are multiple types of glue available, and each one has its own properties and characteristics. Some work well on porous materials, while others need to be used on nonporous items like rock, stone, or plastic. The varieties you will encounter include:

  • Craft
  • Wood
  • Super (cyanoacrylate adhesives)
  • Fabric
  • Polyurethane

Out of these types, the best ones for Legos are super and polyurethane. These types are brittle and adhere well to nonporous substances. Options like craft, wood, and fabric need to be placed on a porous material to work well.

Application Method

Anyone who has gone to elementary school knows there are multiple forms of glue. Some are liquids, some are gels, and a few come in sticks. When you are trying to glue Legos together, you want to stick with a liquid or gel that has a narrow tip. This allows you to control where the substance lays and how much is on the brick.
Using too much glue at any given time can result in the excess dripping out the sides of two connected Legos, which makes huge mess.

How to Glue Legos Together

The process of gluing Legos is simple but requires precision. All you need are the Legos you desire and the glue of your choice. It is a good idea to have your pattern or structure chosen beforehand so you can carefully place the bricks together.
To begin, start with the base of your structure. To glue the Legos together, all you need to do is apply a small dab of liquid glue on Lego A and then carefully press Lego B to it. Depending on the type of glue you have, you will need to hold the pieces together for 5 to 15 seconds until the seal is tight.
You can then move on to your next pieces. Avoid working quickly because you will be more prone to permanent mistakes.

The Best Glue for Legos

Loctite Ultra Gel Control Super Glue – Best Overall Glue for Legos

Loctite Ultra Gel Control Super Glue

Loctite Ultra Gel Control Super Glue is the ideal glue for Legos because it features a control tip and is released as an easy to spread and control gel. This glue does not drip or run when it is placed and also dries rapidly to form a tight seal.
This style of glue is water and corrosion-resistant, meaning it will hold its seal in a variety of conditions. It is also shock-resistance, which means your Legos stand a better chance of remaining together even if you drop the glued structure. The bottle is small yet affordable, and the glue will dry transparently so you can enjoy the look of your Legos without unnecessary glue splotches.
Water-resistant
Does not drip or run
Dries transparent
Strong adhesive
Shock-resistant
Easy to control tip
Permanent
Difficult to squeeze out of tube

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Gorilla Super Glue Gel 

Gorilla Super Glue Gel

The Gorilla Super Glue Gel is a long-lasting, durable option which works well for structures that are meant to be permanent. The formula is infused with rubber particles to improve stability, and the glue dries completely within 30 seconds. When applied, this formula does not run or drip so you can enjoy a clean Lego construction.
This super glue gel features a narrow tip which makes it easier to control where the glue goes. The Gorilla gel is easy to use while also being resistant to water, shock, and natural corrosion. The bottle contains more formula than average while still being affordable.
Dries rapidly
Easy to use
Does not run or drip
Water-resistant
Shock-resistant
Increased stability
Difficult to squeeze out of tube
Thicker consistency than normal

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Rhino Heavy Duty Glue – Rapidly Drying Glue

Rhino Heavy Duty Glue

Rhino Heavy Duty Glue is intended for people who want their Lego creations to remain fixed together permanently. It is a strong formula intended for a broad range of materials including glass, plastic, and concrete. The glue is designed to harden within seconds, creating a tight seal.
This bottle contains around 2.25 oz. and has an easy to use tip. The glue is meant to be resistant to shock and water, so the Legos will not fall apart when dropped or hit with moisture.
Meant for plastics
Dries clear
Bonds in seconds
Water-resistant
Shock-resistant
Easy to apply
Brittle
Strong smell

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Glue Masters Professional Grade Cyanoacrylate – Low Viscosity Glue

Glue Masters Professional Grade Cyanoacrylate

The Glue Masters Professional Grade Cyanoacrylate is a powerful super glue designed to form a tight seal on materials like plastic and glass. It is available in thin, medium, and high viscosities. The low viscosity works well for Legos because the flow of the glue is easier to control than standard liquids.
Like many other superglues, the Glue Masters Professional is shock and water-resistant to improve the durability of the seal. It has a control tip to manage where glue drips and forms a complete seal in 60 seconds. Plus, it includes a 60 day guarantee for returns if you are dissatisfied with the results.
Available in multiple viscosities
Settles in 60 seconds
60 day guarantee
Shock-resistant
Water-resistant
Easy to control flow
Does not glue quickly

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Krazy Glue Elmer’s Original – for Young Builders

Krazy Glue Elmer's Original

Krazy Glue is considered one of the most practical glue for Legos because of its ease of use and overall simplicity. This white glue is viscous and easy to wipe away, making it an excellent choice for someone who wants to experiment with semi-permanent structures.
Like other glues, Krazy Glue is meant to be water-resistant. It is not shock-resistant, so structures could break upon falling. The formula is thick and meant for all kinds of materials, including plastic and wood. It stays fresh in the bottle and does not clog the applicator.
Stays fresh
Precision application
Meant for plastic
Water-resistant
Easy to apply
Easy to control
Semi-permanent
Semi-permanent
Not shock-resistant

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FAQ

Should you glue Legos together?

Although Lego encourages its buyers to not glue their Legos together, there is nothing stopping you from doing so. The catch is most adhesives will either create a permanent seal or will gradually deteriorate over time, so you need to be sure you want your Legos to remain together.

Can you dissolve the glue once the Legos are together?

Whether or not you can dissolve the glue depends on the type you use. Krazy Glue can typically be dissolved with vinegar, but a Gorilla Glue or a Loctite cannot be dissolved. This is why it’s important to choose your type of glue carefully.

Can you use wood glue on Legos?

Wood glue is typically made from PVA’s (polyvinyl acetate), which work well on porous materials and produce excellent bonds between two wooden objects. Unfortunately, this type of glue does not work well with nonporous materials such as plastic. This means if you try to use wood glue on your Legos, there is a good chance your structure will break apart.
Instead of using wood glue, consider one of the options listed above.

Conclusion

Finding the best glue or adhesive for Legos all comes down to knowing what kind of structure you are interested in and how long it should last. For a permanent model, the Loctite Super Glue is an excellent choice because it holds tight regardless of external factors. If you want something temporary or semi-permanent, standard Krazy Glue or another option on this list works well.

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