Last Updated on April 1, 2024 by Francis
If you’ve ever found yourself in a situation where you needed to fix something that two items won’t stick together, you may have heard of JB Weld – the ultimate adhesive solution for those tough-to-stick situations. But what exactly won’t JB Weld stick to? This article will explore what you can and cannot use JB Weld on, so you can ensure a successful repair.
JB Weld will not stick to plastic, rubber, oil, and petroleum products. It is a strong epoxy that is designed to form a bond to many surfaces, but it is not suitable for all surfaces. The epoxy will not adhere to the surface, but it can be used to fill gaps and cracks. JB Weld should not be used on surfaces that are exposed to temperatures higher than 500°F (260°C).
What Materials Does JB Weld Not Adhere To?
JB Weld is an epoxy-based adhesive that offers a strong bond between certain surfaces. However, not all materials can be joined using JB Weld. When used correctly, this product can be an effective tool for DIY projects, repairs, and other applications. However, it’s important to know what materials JB Weld will not stick to, so you can choose the right adhesive for the job.
Plastics
One of the most common materials JB Weld will not adhere to is plastic. This includes both rigid and flexible plastics, like polyethylene, polypropylene, and polyvinyl chloride (PVC). JB Weld is generally not recommended for use on plastic surfaces, as it may not form a strong bond or may crack the plastic.
Polyethylene
Polyethylene is a type of plastic that is often used in food and beverage packaging, as well as in medical devices and containers. JB Weld will not form a strong bond with polyethylene, so it is not recommended for use on this type of plastic.
Polypropylene
Polypropylene is a type of plastic used for a variety of products, including storage containers, automotive parts, and medical supplies. JB Weld is not suitable for use on polypropylene, as it may not adhere to the surface or may crack the plastic.
Glass
Another material JB Weld will not adhere to is glass. This includes both tempered and non-tempered glass, as well as glass-ceramic surfaces. JB Weld is not designed to form a strong bond with glass surfaces, so it is not recommended for use on these materials.
Tempered Glass
Tempered glass is a type of safety glass that has been treated with heat and chemicals to make it more resistant to breakage. JB Weld is not suitable for use on tempered glass, as it may not form a strong bond or may damage the surface.
Glass-Ceramic
Glass-ceramic is a type of glass-like material that is made from silica, alumina, and other compounds. JB Weld is not suitable for use on glass-ceramic surfaces, as it may not form a strong bond or may damage the surface.
Metals
JB Weld is not suitable for use on some metals, such as zinc, aluminum, and copper. JB Weld is not designed to form a strong bond with these metals, so it is not recommended for use on these surfaces.
Zinc
Zinc is a metal that is often used to make coins, jewelry, and other items. JB Weld is not suitable for use on zinc surfaces, as it may not form a strong bond or may cause damage to the metal.
Coins
Coins are made from a variety of metals, including zinc. JB Weld is not suitable for use on coins, as it may not form a strong bond or may cause damage to the metal.
Jewelry
Jewelry is often made from a variety of metals, including zinc. JB Weld is not suitable for use on jewelry, as it may not form a strong bond or may cause damage to the metal.
Aluminum
Aluminum is a lightweight metal that is often used to make automotive parts, kitchen utensils, and other items. JB Weld is not suitable for use on aluminum surfaces, as it may not form a strong bond or may cause damage to the metal.
Automotive Parts
Automotive parts are often made from aluminum. JB Weld is not suitable for use on aluminum automotive parts, as it may not form a strong bond or may cause damage to the metal.
Kitchen Utensils
Kitchen utensils are often made from aluminum. JB Weld is not suitable for use on aluminum kitchen utensils, as it may not form a strong bond or may cause damage to the metal.
Copper
Copper is a soft metal that is often used to make electrical wiring, plumbing fixtures, and other items. JB Weld is not suitable for use on copper surfaces, as it may not form a strong bond or may cause damage to the metal.
Electrical Wiring
Electrical wiring is often made from copper. JB Weld is not suitable for use on copper electrical wiring, as it may not form a strong bond or may cause damage to the metal.
Plumbing Fixtures
Plumbing fixtures are often made from copper. JB Weld is not suitable for use on copper plumbing fixtures, as it may not form a strong bond or may cause damage to the metal.
Few Frequently Asked Questions
What is JB Weld?
JB Weld is a two-part epoxy adhesive that is designed to create a strong bond between two surfaces. It is a permanent and waterproof material that can be used on a variety of materials such as metals, glass, stone, wood, plastic, and ceramic. It is a versatile product that can be used in a variety of applications, including automotive repair, home improvement projects, and craft projects.
What Will JB Weld Not Stick to?
JB Weld will not stick to silicone, polyethylene, polypropylene, polytetrafluoroethylene (PTFE), or Teflon. It is also not recommended for use on polyvinyl chloride (PVC) or acrylic plastics. Additionally, JB Weld should not be used on rubber or on surfaces that have any type of oil or petroleum-based product on them. It is also not compatible with any type of paint or varnish.
What is the Best Way to Prepare a Surface for JB Weld?
In order to ensure the best bond possible, the surface should be clean and dry before applying JB Weld. If the surface is rusty or dirty, it should be sanded or cleaned with a degreaser to remove any debris. For metal surfaces, it is best to use a wire brush or sandpaper to remove any oxidation or rust. Once the surface is clean and dry, it is ready for the application of JB Weld.
What is the Working Time for JB Weld?
The working time for JB Weld is approximately 5-10 minutes. During this time, the material should be mixed thoroughly and applied to the surface to be bonded. After the working time has elapsed, the material will start to cure and will take approximately one hour to reach full strength.
Are There Any Special Considerations When Using JB Weld?
Yes, there are a few considerations to keep in mind when using JB Weld. First, it is important to wear gloves and protective eye wear when mixing and handling the material. Additionally, it is important to ensure the surfaces being bonded are clean and dry before applying the material. Finally, the material should only be used in a well-ventilated area and should not be used near any open flame.
How Long Does it Take for JB Weld to Cure?
JB Weld will take approximately 24-48 hours to fully cure, depending on the temperature and humidity levels. The material should be left undisturbed during this time to ensure the best bond possible. After the curing process is complete, the material should be as hard as steel and will be waterproof and heat resistant.
JB Weld is a powerful adhesive that can adhere to a wide variety of surfaces, but there are some materials it will not bond to. Despite its strength, JB Weld cannot stick to materials like plasticized PVC, fiberglass, and some types of rubbers and plastics. If you are unsure if JB Weld will adhere to the material you are working with, be sure to check the product’s safety data sheet to ensure a successful application. With the right preparation and application, JB Weld can provide a strong and lasting bond for many projects.
