I will ask this since there seems to be some debate. First off I have rolled sod for another company before starting my own biz. We rolled along roads and "prep" had no meaning or place in those jobs. Now, however I am doing sod for high end residential and want to do the very best job possible. Do you lay fert of any kind on the soil before you sod? Do you water the bottom of the sod or water the roll before laying out? Do you roll the sod after you have laid it? We did none of these things in the old gig and different people have said to do each of them since I started my research.