Increase of air, water, and nutrients:

When water and nutrients are located near the surface of your lawn, grass roots grow upwards to reach this nutrition. This condition makes the roots susceptible to dramatic weather changes such as heat, cold, wind, and foot traffic. Roots become stressed and weak. Core aeration allows water and nutrients to penetrate the soil, providing a deeper and broader root system. Unlike spike aeration, which only pokes holes in the lawn without removing the cores, core aeration allows for the absorption of more nutrition. This process produces a thicker and healthier lawn.

Over time your soil can become compacted and your lawn choked with a layer of thatch and debris. So even if your grass looks thick and green, core aeration every season as a preventive measure can insure the future health of your lawn.