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How Do I Choose the Best Heat-Resistant Glue?

By Alex Newth
Updated May 17, 2024
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Heat-resistant glue is similar to any other type of glue, but it is uniquely resistant to higher temperatures because of its chemical makeup. Heat resistance is a major concern with this type of glue, so you should ensure it can withstand the amount of heat generated or experienced by the substrate with which it will be used. Depending on the heat-resistant glue brand, there may be some materials with which the glue cannot bond, and you should check this before choosing a brand. If the glue will be used in any conspicuous spots, then the glue’s color might matter. Along with this, bond strength should be checked, especially if you are bonding heavy objects.

The major difference between heat-resistant glue and any other glue is that it will not bubble, melt or otherwise degrade around high temperatures. This glue is specifically designed to be used around high temperatures, but it still may be a good idea to determine how much heat the glue can withstand. More resistant glue usually costs more than less resistant glues, so it might be best to get glue that fulfills your needs but does not largely surpass them.

Outside of being good against heat, heat-resistant glue is similar to ordinary glue. It may have troubles bonding with certain materials, such as wood or plastic. Regardless of the type of material you are bonding, it normally is a good idea to know what materials can be adhered with a particular product, so you do not accidentally get an ineffective adhesive that cannot glue together your object.

Glue is sometimes used in a conspicuous spot that is easily seen, though it also may be hidden from view. If heat-resistant glue is being used conspicuously, then it may be a good idea to check the glue’s color and its ability to blend in once dry. Clear and transparent glues may be good for this, but transparent glue still may have an off-white color that is clearly visible against a darker substrate’s surface.

There are both general and industrial strength heat-resistant glue brands, and while some will be good for household items, others will be best for heavy items such as large metal or wood pieces. Depending on what you want to adhere, you should choose a glue that has just enough power to keep the item together. You can always choose a stronger glue bond strength but, like extra heat resistance, this pushes up the price of the glue and it might actually prove to be ineffective for light items.

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Discussion Comments

By Rundocuri — On Oct 27, 2014

Regardless of what you are gluing or the type of glue you use, I think that you should let the glued object set for at least five days to a week before using it. I think this should always be the rule of thumb that is followed when it comes to glued objects that are going to be exposed to high temperatures. This wait period will give the glue enough time to form a strong bond and dry completely before being used.

By Ocelot60 — On Oct 26, 2014

I once used a glue that was labeled as heat-resistance to repair my backyard grill, but it did not hold up in high temperatures. I used epoxy glue the next time I needed a heat-resistant glue, and it worked perfectly. I think that epoxy will hold up in most situations, regardless of what the glued object is going to be exposed to.

The bottom line is that you should not assume that a glue is going to work for your needs just because the packaging makes certain claims. Experience and the recommendations of someone who has used a particular kind of glue is much better to rely on when choosing a glue for your needs.

Depending on what you are gluing, you can also check with the manufacturer of the product for specific glue recommendations. Sometimes this is the best place to start so you don't have to spend money on several types of glues before you find one that will work on your repair project.

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