Erosion, as it is related to foundation maintenance, is the displacement of soil by agents such as wind and rain. These agents will move the displaced soil down-slope in response to gravity. Erosion around the home’s foundation is usually caused by water and to a lesser extent wind. You can control roof-water runoff and help prevent soil erosion by using properly sized gutters and downspouts. Gutters should be maintained and free of debris. Remember, no gutters are better than clogged gutters. All runoff water should be diverted at least 4 feet away from your foundation. Also, bare ground is more susceptible to erosion. It is best to keep grass growing or shrubs planted.
The soil around a house will tend to settle with time and additional topsoil may be needed. Use a clay soil each time you replace the soil around the foundation. Do not use sand, sand is porous. Rain water flows through the sand into the supporting soils and adjacent to the foundation, where it can cause problems.