How long should finished grout be kept wet for optimal curing?

For optimal curing of finished grout, it is important to keep the grout wet for 24 hours. This duration allows the grout to properly hydrate and gain strength, which is crucial for its overall performance and adhesion. Adequate moisture during the curing process prevents issues such as cracking or shrinkage, and contributes to the development of the grout's full compressive strength.

During the first 24 hours, the grout is still in a critical phase of setting. Keeping it moist ensures that the curing process is improved by facilitating chemical reactions that occur as the grout hardens. This step enhances the durability and integrity of the surface being grouted, ultimately leading to a longer-lasting installation.

Various guidelines recommend this time frame based on standard practices in masonry and construction, as it strikes a balance between ensuring sufficient hydration without extending the period unnecessarily, which could lead to other complications.