I used Mapei Grout Maximizer to seal the grout. How long does it need to dry before we can use the shower?

  • So I am assuming I let the maximimizer dry 2 hours and then test with droplets of water? Commented Jan 21, 2023 at 16:00

1 Answer 1


Manufacturer directions should state minimum time after sealing for use. It is important to “test” sealer by sprinkling a few drops of water on the sealed grout to make sure it is repelling water. If the water is spreading out and being absorbed, you need to apply another coat of sealer and allow to dry at least two hours.

Here are the instructions on the Mapei container: sealer instructions

  • I didn't use a brush on grout sealer. I used their grout additive that lets you grout and seal in one step. Commented May 22, 2018 at 19:35
  • What you used is a modified grout (added polymer), not a true sealer. It’s akin to shampoo-conditioner-in-one. I’m sure you’re using the shower and that’s fine. Next time you feel ambitious when doing a good bathroom cleaning, after you clean, apply a surface sealer to ensure the integrity of your tile install. Cheers!
    – M.Mat
    Commented May 26, 2018 at 1:53

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.