Failing to water the sod quickly enough after installation, or allowing it to dry out too much while it's stacked and waiting for installation, is the most common cause of yellowing. Whenever possible, stop and water the freshly laid sod after every few pieces so they don't dry out in the sun.

Will sod come back after turning yellow?

Yellow dying sod can be revived and become green again. However, before you rush to remedy yellow dying sod, make sure that you identify the cause before jumping to the assumption that your lawn isn't getting enough water.

Is it OK if sod is yellow?

Yellow patches may indicate that your new sod is getting too much water. ... Typically, new sod requires five to 10 minutes of watering, two to three times daily for the first seven to 10 days after installation. Water enough to soak the first few inches of soil.