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Homemade Caulk

For repairing cracks in tile, homemade caulk won't do as good a job as commercially made caulk. And because caulk is so inexpensive, buying it will usually be your best solution in the long run.

For repairing cracks in tile, homemade caulk won't do as good a job as commercially made caulk. And because caulk is so inexpensive, buying it will usually be your best solution in the long run. However, if a situation comes up where you need caulk immediately for a temporary fix, then you can make some caulk with a little baking soda and basic white glue.

Homemade Caulk

The exact amount of baking soda and glue you'll need will depend on how much caulk you'll need. Assume 2 tbsp. of baking soda will make enough. Mix the baking soda with enough white glue (a craft glue works best) to create a thick mixture. Mix this in a bowl, on a plate or even on a piece of foil. Stir with a spoon or paint stirrer until the baking soda is completely dissolved and mixed into the glue.

For applying the caulk, as you won't be able to use a gun, you'll have to use the stirrer or other stick to work the caulk into the crack. Use more caulk than the crack holds, so the crack overflows. Then use a piece of cardboard to smooth over the caulk, creating a flush line. Let the area dry thoroughly before applying any paint over the caulk. For removing the temporary caulk to replace it with commercial caulk, clean the area with a sponge and water and use a knife or screwdriver to scrape it off.

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