Is JB Weld Conductive?

Is JB Weld Conductive?

JB Weld is a popular epoxy adhesive used for many types of repairs. It’s strong, reliable, and well-loved by hobbyists and professionals alike for its durability and ease of use. But one common question persists: Is JB Weld conductive?

The answer to this question isn’t simple, as it depends on several factors. In this article, we’ll explore the conductive properties of JB Weld and provide some useful tips for potential users.

What is JB Weld?

JB Weld is a two-part epoxy adhesive made from a combination of acrylic and polyester resins. It’s extremely strong, boasting a tensile strength of up to 5020 PSI when fully cured. The epoxy cures at room temperature and sets in only four to six hours, making it incredibly versatile for quick repairs. [2]

What is JB Weld?

Different Types of JB Weld

JB Weld has a variety of products designed for different purposes. The type of JB Weld you use will determine whether it is conductive or not.

The original JB Weld product is a two-part cold weld that can be used to repair ferrous and non-ferrous metals, as well as other materials such as plastics, concrete, glass, and ceramics. This product is not conductive.

JB Weld also offers products designed specifically for electrical repairs such as the JB Weld Electrical Conductive Epoxy Putty Stick. This product is specially formulated to provide a strong, permanent repair with high electrical conductivity. [2]

Why to Use JB Weld?

JB Weld is an epoxy-based adhesive that was originally developed for use in military and aerospace applications. It has since become extremely popular with do-it-yourselfers for its strength, electrical insulation properties, and its ability to form bonds between a wide variety of materials such as metal, wood, glass, plastics, ceramics, and rubbers. [2]

How to use JB Weld?

Surface Preparation

JB Weld works best when used on clean, dry surfaces. Before you apply the product, make sure to remove all rust, dust, dirt, and other debris from the surface. Once you’ve finished cleaning the surface, it should be as smooth as possible for optimal adhesion. [1]


To use JB Weld, you’ll need to mix it with a certain ratio of resin and hardener. Typically this is 1:1, but make sure to check the instructions before you begin. Use clean utensils and combine the two substances until they form an even, consistent color and texture. [1]


Now that you’ve mixed the JB Weld, it’s time to apply. Using a putty knife or popsicle stick, spread the mixture over the areas needing repair. Make sure to fill any cracks or gaps and press down on the material for optimal adhesion. [1]


After you’ve applied the JB Weld, let it cure for 8 hours or overnight. Depending on the formula of JB Weld you used, curing time can vary. After this period of time, you can sand down any excess material that may be sticking out.

Finally, once JB Weld is completely cured, it will be non-conductive. This means it won’t conduct electricity or heat, making it a great option for repairing sensitive electronics and appliances. With these tips in mind, you should have no problem using JB Weld to make strong repairs that last! [1]

How to use JB Weld?

Does JB Weld Conduct Electricity?

JB Weld is a widely used two-part epoxy resin adhesive that has many practical applications. It can be used for repairing damaged or broken parts, filling in small cracks, and bonding nearly any material including metal, wood, plastic, rubber and more. But one question that often comes up is whether or not JB Weld is conductive. The short answer is no, JB Weld does not conduct electricity.

While JB Weld itself is non-conductive, the metal it bonds can be conductive when connected to a power source. If you are looking to use JB Weld for an electrical repair, it’s important that you make sure all connections and wiring are properly insulated and shielded from any potential sparks. [2]

Why JB Weld Isn’t Electrically Conductive?

JB Weld is an epoxy and two-part adhesive that offers a strong bond for many surfaces, but it does not conduct electricity.

This has led to some confusion when people are trying to use JB Weld as a conductor in electrical projects. Despite its strength and versatility, it’s important to remember that JB Weld is not electrically conductive. [2]

Electrically Conductive Adhesives

JB Weld is an epoxy-based adhesive that provides a strong bond between any two surfaces. However, it is not electrically conductive. This means it cannot be used to form electrical connections. Instead, for applications where electric current or signals need to be transferred, electrically conductive adhesives must be used instead of JB Weld. [2]

What Adhesives Are Conductive?

Adhesives that are conductive include silver-filled epoxies, acrylic-based adhesives, and conductive-polymer gels. Silver-filled epoxies consist of metallic particles with an epoxy resin binder. They provide strong electrical bonds between surfaces and resist corrosion, making them ideal for use in electronic applications. Acrylic-based adhesives, such as the popular Loctite GO2 Glue, are highly conductive and provide reliable electrical connections. Conductive-polymer gels are similar to acrylic-based adhesives in that they are also highly conductive but offer flexibility and resilience. [2]

Tips & Tricks

When it comes to working with JB Weld, there are several tips and tricks to consider that can help you get the most out of your product. Before you begin, make sure that all surfaces are clean and free from oils or grease buildup. Also, keep in mind that the curing process begins as soon as you mix together the two components, so you should be prepared and have everything needed before starting.

To get the best results, it’s important to mix the two components together in equal parts. Once mixed, the epoxy will begin to set within five minutes and reach full strength after about 24 hours. This means that it’s important to work quickly but also ensure that you are creating a strong bond between the two surfaces.

To ensure that the JB Weld has a secure, permanent hold, it’s important to clamp together the two pieces of material while the epoxy dries and hardens. Doing this will help ensure that your final product is not only durable but also conductive. [3]

Tips & Tricks

What are J-B Weld’s best Applications?

JB Weld is a two-part epoxy adhesive and sealant. It’s often used for automotive, plumbing, marine, home improvement and many other projects—and it works on a variety of materials including metal, wood, plastic, ceramic and much more.

It has some great applications when working with cars. For example, you can use it to fix cracked manifolds and tailpipes, bond radiators and heater cores, fix oil pans and seal wiring harnesses.

JB Weld is also great for use on home appliances like water heaters, refrigerators and washing machines. It’s perfect for any plumbing project that requires a strong bond between two surfaces—like sealing leaky pipes or patching up a cracked radiator.

It’s also great for projects around the home like affixing curtain rods, picture frames and mending broken ceramic pieces or furniture parts. [3]

How to Make JB Weld Cure Faster?

JB Weld is a popular product for making quick repairs and it’s often used as an alternative to soldering. But one of the biggest questions people have about JB Weld is how can you make it cure faster?

The answer is that there are several ways to speed up the curing time of JB Weld, and all of them involve applying heat. Heat can help JB Weld cure faster by accelerating the chemical reaction that causes it to harden.

The most common way to apply heat is to use a heat gun or hair dryer set to medium-high heat. This should be done in short bursts of 10-15 seconds, with regular intervals of 10 minutes in between each burst. [3]

JB Weld Curing Factor

An important factor to consider when determining if JB Weld is conductive is the curing factor. This refers to how well the product has been cured. If it hasn’t been fully cured, then it may not be as effective at conducting electricity. However, if you give it enough time and heat (or leave it in sunlight for a few hours) then you’ll experience better conductivity. The curing time will vary depending on the type of JB Weld used, so always read and follow the instructions for best results. If you plan to use JB Weld for electrical applications, then it’s best to give it extra time to cure properly. [3]

JB Weld Alternatives

If you have opted to look for an alternative to JB Weld, here are a few options that may be considered:

  • Electrical tape: This is a non-conductive material that can be used as insulation. It’s easy to apply and remove, and it offers great resistance against water, dust, oils and other contaminants.
  • Heat-shrink tubing: This is a heat-activated material that shrinks when heated. It can be used to insulate wires and other components, and it offers great protection against moisture, dust, oils and other contaminants.
  • Solder: Soldering is one of the oldest methods of joining metal parts together. It’s a highly conductive material and offers great durability. It also helps to protect the components from corrosion and oxidation.
  • Resistor wire: This is an insulated material that can be used for high-current applications, such as motors or electric vehicles. It allows the current to flow without any heat buildup and offers superior insulation against dust, oils and other contaminants. [3]

JB Weld Alternatives


How do you make J-B Weld conductive?

Making J-B Weld conductive is actually quite simple. First, make sure to use the right type of material for your application. J-B Weld epoxy products are available in several types and grades, and some will be better suited for certain tasks than others. For making J-B Weld conductive, it’s best to use either the Original or Quick-Setting formulations.

Once you’ve chosen the right material, all you have to do is add some metal particles or power to it before mixing. The amount of metal particles will depend on your application and its conductivity requirements. You can use fine copper powder, silver powder, aluminum powder, solder flakes, or other metallic powders for this purpose.

Is there an epoxy that conducts electricity?

Yes, there are several types of epoxies that conduct electricity. These include silicone-based epoxies, modified polymers, and electrically conductive adhesives (ECA). Silicone-based epoxies are typically used as thermal management materials in high-power electronic circuits. Modified polymers are also popular for electronics applications due to their excellent electrical.

What glue is electrically conductive?

There are several types of electrically conductive glues available. These include silver-filled epoxies, silver-loaded polymers, and metal filled adhesives such as solder paste or flux. Silver epoxies are typically used for making electrical connections between two surfaces. Silver-loaded polymers are ideal for repairing damaged PCBs or creating a low resistance.

What is the thermal conductivity of J-B Weld?

J-B Weld products are designed for high strength and excellent adhesion. However, they do not have great thermal conductivity. J-B Weld Original and Quick Setting epoxies have a thermal conductivity of 0.30 W/mK, while the High Temperature grade has a slightly higher rating of 0.32 W/mK.

Is steel reinforced epoxy conductive?

Steel reinforced epoxy is not conductive. Steel reinforcement does not have any effect on the electrical properties of an epoxy. However, it does provide additional strength and durability to the cured material. To make steel reinforced epoxy conductive, you would need to mix in metal particles or flakes before using it.

How conductive is thermal paste?

Thermal paste is highly conductive, with a thermal conductivity rating of around 8 W/mK.

It is designed to transfer heat efficiently between two surfaces that are in direct contact. This makes it ideal for use in applications such as CPU cooling and in devices like game consoles or computers where effective thermal management is critical.

Useful Video: Is JB Weld Strong Enough to Repair a Broken Connecting Rod? Let’s Find Out!


JB Weld is not conductive and should not be used in any situation where electrical current must be passed through the bond. In most cases, a soldering iron or other metal-based adhesive should be used instead.

It is important to note that JB Weld does possess some qualities of being semi-conductive. This means that it can still carry a small amount of current, which could be dangerous in certain situations.

Despite this, JB Weld is still an excellent adhesive that can be used for many common projects. It provides a strong bond and can withstand extreme temperatures, making it one of the most versatile adhesives available on the market today.