Most commercial silicone caulks need 24 hours to fully cure. In cool, dry climates, the curing may take 48 hours. Because the curing process involves both physical and chemical changes in the caulk, getting the caulk wet before it has fully cured can compromise its ability to adhere properly.

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Standard Silicone Caulk

Most commercial silicone caulks need 24 hours to fully cure. In cool, dry climates, the curing may take 48 hours. Because the curing process involves both physical and chemical changes in the caulk, getting the caulk wet before it has fully cured can compromise its ability to adhere properly.

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Shower-Ready Silicone Caulk

Some silicone caulks are designed to be used before the curing process is completed. Unlike standard silicone caulk, shower-ready caulk may be safely exposed to water in as little as an hour after you've applied it. Just be careful not to damage the caulk before it has cured completely.

  • Most commercial silicone caulks need 24 hours to fully cure.
  • Some silicone caulks are designed to be used before the curing process is completed.
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Bottom Line

Unless the silicone caulk you used is shower-ready, allow it to cure for at least 24 hours before using the shower. Shower-ready caulks are marked as such, and the interval between application and use will be indicated in the instructions.