When topdressing an existing lawn, not a lot of soil is required. Fill any existing holes slightly above level ground, then lightly apply even layer (approx. 1/4″ thick) over remaining lawn. Use a “fan” rake to make an even coat. Seed lawn* and lightly rake again. Water for several hours every day for 3-4 weeks.
*approx. 5lbs./1000ft² when over seeding, and 10lbs./1000ft² for establishing new lawn.