Waterproof Glue Recipe

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When you’re gluing something together that’s going to go under water, you need a glue that doesn’t melt. This waterproof glue recipe is the one you need.

This homemade glue needs to be applied warm so it will form a bond. Even then, it’s not the strongest glue in the world and the bond may not last forever. But it does stand up to being in water.

It’s a good idea to make small batches of it so you can use it all up in one go, while it’s warm. For future applications, put the glue container in a bowl of hot water to warm it up again.

Apply it with a brush. It can take a few days to gel, but it’s good for lots of crafts.

A lot of waterproof homemade glues include milk, which of course spoils quickly. This one will actually keep for a while, but isn’t quite strong enough to hold together something like a broken china plate.

Paintbrush spreading glue onto orange paper
Yield: 1 batch

Waterproof Glue Recipe

Prep Time: 8 minutes
Active Time: 2 minutes
Total Time: 2 minutes
Difficulty: Easy
Estimated Cost: Under $10

When you're gluing something together that's going to go under water, you need a glue that doesn't melt. This waterproof glue recipe is the one you need.


  • Unflavored Gelatin
  • Glycerine
  • White Vinegar
  • Water


  • Saucepan
  • Spoon
  • Airtight container for storage


  1. Boil 6 tablespoons of water in a saucepan.
  2. Take the saucepan off heat.
  3. Stir in 1/2 ounce (14 grams) of unflavored gelatin - that's 2 packets in most brands I know of in the US. (Unless you want your glue to smell like a gelatin flavor, which is an interesting thought.)
  4. Once the gelatin has dissolved, add 2 tablespoons of white vinegar and a teaspoon of glycerine.
  5. Stir well.
  6. Use it while warm.
  7. Let it cool a little before pouring it into your airtight container for future use.

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