How to Remove Caulk Residue

Co-authored by Eric Shipe and Madeleine Criglow

Last Updated: November 5, 2021 References

If you're trying to remove stubborn caulk residue, you're likely looking for a quick and easy fix to remove it. Thankfully, there are a ton of different ways to remove caulk residue that only take a few minutes to get the job done. This article has some tips on what products you can use as well as which ones are best for specific surfaces. Read on to say goodbye to old caulk residue for good!

1

White vinegar

This is the most gentle means to remove silicone caulk residue.^{[1]
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Research source} Mix water and white vinegar in a 1:2 ratio. Apply the substance to the caulk residue and let it sit for 5-10 minutes. After, wipe up the substance from the surface along with the residue.^{[2]
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- Since white vinegar is more gentle, it might take a few rounds before it removes all of the residue.
- To get rid of the vinegar smell on your surfaces after you're done, apply a dusting of baking soda. Next, wash it off with hot water. Avoid doing this on plastic or unfinished surfaces.^{[3]
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2

Isopropyl alcohol

Opt for this product to remove silicone caulk from painted surfaces or plastic. For the best results, use industrial-grade isopropyl alcohol. It's also a good option for particularly hard-to-remove caulk residue. Soak a cloth in isopropyl alcohol and let it sit over the caulk residue for up to 2 days.^{[4]
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Research source} Next, remove the cloth and scrape away the residue with a putty knife.^{[5]
X
Trustworthy Source
United States Environmental Protection Agency
Independent U.S. government agency responsible for promoting safe environmental practices
Go to source} The alcohol will have hopefully softened it enough so that it's easy to remove!
- If rubbing alcohol is all that you have, you can use that instead. It just may take a few rounds before all of the caulk residue is gone.

3

WD-40

WD-40 is a harsh solvent that can easily remove silicone caulk residue. First, clean the area with soap and water so that the WD-40 will be able to properly adhere to the residue. Let it dry before spraying down the area. Next, put on gloves so that the WD-40 won't touch your skin (it's a pretty harsh substance). When you're ready, use the straw on your can of WD-40 to thoroughly spray down the caulk residue. Let it soak for 2-5 minutes and then use a putty knife to scrape off the residue.^{[6]
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- If the residue is old or particularly thick, you might have to repeat this process a few times before the residue is entirely gone. Make sure to clean it with soap and water before you reapply the WD-40. Let it dry, too.

4

Mineral spirits

Use this solvent to remove silicone caulk from concrete, marble, or porcelain.^{[7]
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Research source} Apply mineral spirits to a scrubbing pad and wipe down the caulk residue. If the residue is on plastic, use a rag soaked in mineral spirits instead. After you've wiped down the area, use a wet cloth to clean off the remaining residue and solvent.^{[8]
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- You can find mineral spirits at hardware stores. Paint stores usually carry the product as well.

5

Acetone

Acetone removes polyurethane caulk residue from glass and unpainted wood. Apply the acetone to a damp cloth and wipe down the caulk residue. This will hopefully soften the residue and allow you to remove it with the cloth. Avoid using this substance on painted wood, as it can strip the paint off of the wood.^{[9]
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6

Nail polish remover

Use this as an alternative to acetone. It will be able to get rid of polyurethane caulk just as well. Pour nail polish remover onto a damp rag and use it to clean off the caulk residue. The nail polish remover will likely be harsh enough to soften the caulk and let you wipe it off with the rag.^{[10]
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- Nail polish remover can damage painted wood, so only use this substance on surfaces like glass and unpainted wood.

7

Goo Gone Caulk Remover

This is best for removing latex-based caulk. First, spray the product onto the residue. Let it sit for 2-5 minutes. Next, scrape off the residue with a putty knife. Use a nylon brush to brush away the particularly pesky residue that won't come off with the putty knife. Once you've brushed and scraped away all the caulk, wipe down the surface with a soapy cloth. After the surface dries, you're all set.^{[11]
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8

Baby oil or body lotion

Use either of these to remove latex caulk residue from wood. They're both gentle enough to prevent damaging the wood's surface. Since wood is sensitive to damage, avoid using harsh solvents. When you're trying to remove any residue, use a putty knife or a spatula to remove as much residue as you can. Next, use a blow dryer to heat up and soften the remaining residue. Finally, rub either baby oil or body lotion on the caulk for 5 minutes or until it has softened up. After, remove the residue with your putty knife or your spatula.^{[12]
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- White vinegar is also gentle enough to use on wood.

9

Utility knife

Sometimes you don't need to use a solvent to remove caulk residue. If you don't have any of the listed detergents or you want to avoid using harsh chemicals, try using a utility knife instead.^{[13]
X
Expert Source

Eric Shipe
Home Improvement Specialist
Expert Interview. 11 June 2021.} Simply cut out the old caulk and the remaining residue with the knife.^{[14]
X
Trustworthy Source
United States Environmental Protection Agency
Independent U.S. government agency responsible for promoting safe environmental practices
Go to source} When you're done, use a gentle household cleaner and a rag to clean off any remaining caulk dust.
- Avoid using this method on surfaces like wood, as the sharp utility knife may scratch the wood's surface.
- Before using the knife, try softening up the residue first by blasting it with a blow dryer for 30-40 seconds on high heat.^{[15]
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- A plastic razor blade is also a good option, especially since it's less likely to scratch anything.^{[16]
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  Expert Source
  
  Emily Fazio
  Home Improvement & DIY Specialist
  Expert Interview. 27 July 2021.}

10

Putty knife or caulking spatula

Try either of these options to remove caulk from wood. Both are gentle enough to remove caulk and caulk residue from such an easily scratched surface. First, soften up the residue with a hairdryer on high heat for 30-40 seconds.^{[17]
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Research source} Next, gently scrape up the residue using either a caulking spatula or a putty knife.^{[18]
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Expert Source

Eric Shipe
Home Improvement Specialist
Expert Interview. 11 June 2021.}^{[19]
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Trustworthy Source
United States Environmental Protection Agency
Independent U.S. government agency responsible for promoting safe environmental practices
Go to source}
- Check as you work to make sure you're not leaving scratches on the wood's surface at all.

11

Hammer and chisel

This method works well for particularly difficult to remove caulk residue. Hold a chisel to the surface of the remaining residue, then hit the chisel with a hammer to remove it. Be careful to only try this method on surfaces that can handle it, like metal and steel. Don't use this method on porcelain, ceramic, and wood surfaces.^{[20]
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Trustworthy Source
United States Environmental Protection Agency
Independent U.S. government agency responsible for promoting safe environmental practices
Go to source} Clean off any remaining caulk dust using a cloth and a gentle household cleaner.
- Soften the residue first with a hairdryer. Turn the hairdryer up to high heat and blast the residue for 30-40 seconds. This can make removing it easier.^{[21]
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Expert Q&A

Question

How can I remove caulk without using chemicals?

Eric Shipe
Home Improvement Specialist
Eric Shipe is a Kitchen and Bath Designer and the Owner of Bath + Kitchen based in Washington DC. Eric and his team specialize in cabinetry, design, and remodels. They serve homeowners, interior designers, architects, and contractors with a refined process, creative ideas, 4K photo-realistic renderings, and 360 Panoramic views. Bath + Kitchen was featured in Best of Houzz 2017-2020. Eric holds a BA in Economics and Business Administration from Ursinus College.

Eric Shipe

Home Improvement Specialist

Expert Answer

One of the best ways you can get rid of caulk is with a utility knife or a caulk removal tool.