Determine the area that needs seeding. No matter if it is a few areas or if it is the entire lawn, you will need to determine how much grass seed and topsoil you will need. One bag of topsoil typically covers 1 cubic foot, and one bag of grass seed covers 1,000 square feet.
Lay the topsoil over the area that needs seeding. You can use a fertilizer as well to help the seeds germinate. Spread the layer of topsoil evenly across the yard using a hoe or rake.
Spread the seeds using a wheel spreader. Wheel spreaders are cheap and effective tools, available for purchase at most home improvement stores for under $20. Do not spread seed on windy days, as you risk the seeds being blow away and not germinating in the areas that need it.
Rake the seeds into the top 1/8 inch of the topsoil. Go over the area lightly so you do not displace any of the seeds after you spread them.
Roll the areas you seed with a lawn roller. Lawn rollers are available at home improvement stores for sale or for rent. Incurring the expense of a lawn roller as a tenant is unnecessary, making renting one the appropriate choice. Rolling the seeds into the soil helps the seeds take root.
Water the lawn regularly for the next three to four weeks, like once a day in the evenings. After three to four weeks, you will see the results of the seed germination in the soil and new grass growing. Maintain the grass after this point to avoid having to reseed the lawn again.