How to Remove Drylok

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Drylok masonry sealant is commonly used to waterproof cracks in basement walls and floors. If you need to remove this heavy-duty coating, made by United Gilsonite Laboratories and often marketed as UGL Latex, you'll need the right solvent and a pressure washer powerful enough to blast away old layers of coatings. This combination, along with a little elbow grease, should strip old layers of Drylok in order to seal an old crack even better.

Things You'll Need

  • Pressure washer (3,000 psi or better)
  • Large paintbrush
  • Scraper/sharp putty knife
  • Sander with medium grit attachment (if possible)
  • Detergent
  • Industrial-strength paint remover
  • Rubber gloves and safety goggles
  • Purchase the right industrial-grade solvent for Drylok removal. Drylok's patented latex formula makes it resistant to many common paint-removing solvents.

  • Put on your gloves and goggles before you begin. Drylok solvent contains compounds that could damage your skin or eyes.

  • Brush on your solvent to completely coat the Drylok. Let it sit for the time recommended on the container, typically at least 45 minutes.

  • Turn on your pressure washer after the solvent soaking and see what can be sprayed away at top pressure.

  • Use a sander to make tough areas more porous before trying a second coating.

  • Use a sharp putty knife to help break up large swaths of Drylok.

  • Brush on another coating of solvent and let it sit for 45 minutes before attacking the Drylok again with the pressure washer.

References

  • Photo Credit Medioimages/Photodisc/Photodisc/Getty Images
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