When you lay sod, make sure the rolls are lined up so that there are no gaps in-between. The sod rolls should be flush, meaning they butt right up against each other. You should stagger the rolls of sod in a brickwork pattern. This makes it much harder to see the seams and makes the installation look more professional. If the sod roll happens to be too long, then just use a utility knife to cut off the extra part.