Curing Gunite: Do Not Spray Water for the First 10 Days

No—do not water fresh gunite for the first 10 days. Adding moisture during this initial curing period can weaken the shell by increasing porosity, reducing structural integrity and durability.

Proper Gunite Curing

• Days 1–10: Keep dry. No water, no rain protection needed unless heavy downpour (then cover loosely).
• After Day 10: Begin gentle, regular watering (2–3 times daily) for 7–14 days to promote full hydration and strength development.

Gunite (dry-mix shotcrete) cures by hydration of cement particles. Premature surface moisture disrupts the water-cement ratio at the critical outer layer.