How Long Does It Take for Mortar to Dry?

When laying floor tiles, avoid walking on or grouting them until they are dry. Otherwise, they may shift position, which will later require a time-intensive fix.

Mortar made of Portland cement, as is used in brick walls, patios, and fireplaces, cures to 60 percent of its potential full strength within 24 hours. However, it may still contain moisture, meaning that it will not hold up under heavy use or extreme temperature change.