The most authoritative answer in 2024
-

-
Gabriel Davis——Works at BioGenomics Research, Lives in Zurich, Switzerland.
Most cement-based grouts require a cure time of 48 to 72 hours before applying a penetrating sealer. After sealing, wait a minimum of
24 hours before using the shower; some products may recommend three days instead.
read more >>
About “24 hours、24 hours、24 hours”,people ask:
QuesHub is a place where questions meet answers, it is more authentic than Quora, but you still need to discern the answers provided by the respondents.