How to Remove Cured Epoxy With Heat

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Epoxy, also known as polyurethane, is a glue used to hold many products used in construction such as windows and glass doors. Over time, epoxy can become brittle and the object it is holding can become loose. When the object becomes loose, it is necessary to reattach it by removing the epoxy with heat before reattaching it with new epoxy. The most important part of removing the dried epoxy with heat is to ensure the cleanup process is done right afterward or the new epoxy will not stick to the surface again.

Things You'll Need

  • Gloves
  • Heat gun
  • Chisel
  • Spray lubricant, such as WD-40
  • Cloth
  • Put on gloves to protect your hands from the heat. Use a thick, heavy pair of construction gloves to get the best protection.

  • Heat up the cured epoxy with the heat gun. Heat the epoxy directly with the heat gun no further than 2 inches from the glue. The time it will take the cured epoxy to melt will vary. You will notice the color and consistency of the glue change when it has been heated enough. When it starts to drip and turn a lighter color, the glue is ready to be removed.

  • Scrape off the melting epoxy with the chisel. Make sure you do not damage the surface by pressing down too hard with the chisel. If the surface begins to cool down, heat it up again with the heat gun and continue scraping off the remaining epoxy.

  • Cover the surface where the epoxy was with spray lubricant and let it sit for about five minutes.

  • Clean the spray lubricant from the surface with the cloth. The spray lubricant will remove all remaining glue residue from the surface. Let the surface dry for at least 48 hours before applying new epoxy.

Tips & Warnings

  • Heated epoxy can give off smoke and odors. Make sure to have good ventilation.

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References

  • Photo Credit Jupiterimages/Photos.com/Getty Images
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