How Grass Regulates Moisture Around Home Foundations
1. Absorbing Excess Moisture
Grass is a natural sponge. It absorbs excess water from rain, irrigation, and runoff. Grass roots draw water from the soil, keeping your foundation at an optimal moisture level. This absorption helps prevent water from pooling around the foundation. Pooling can cause soil to expand and contract, leading to foundation cracks. The University of Minnesota Extension says that grass around the foundation can reduce soil saturation during heavy rains.
2. Reducing Surface Runoff
Grass slows water flow during rain or irrigation, reducing surface runoff. When rain hits a grassy area, the grass slows the flow. This allows more time for the soil to absorb the water instead of rushing to the foundation. It prevents water buildup around the foundation, reducing moisture damage. The Soil Science Society of America found that grass areas have up to 70% less runoff than bare soil.
3. Preventing Soil Erosion and Compaction
Grass prevents soil erosion around the foundation. Its roots stabilize the soil. Eroded or compacted soil can create paths for water to flow to the foundation, which may cause water to infiltrate or the foundation to settle. A healthy grass cover holds the soil in place, prevents erosion, and maintains moisture around the foundation.
4. Maintaining Consistent Soil Moisture Levels
Grass reduces evaporation and shades the soil, keeping moisture levels in the soil. This consistency is crucial. Fluctuations in soil moisture can cause the soil to expand when wet and contract when dry, leading to foundation shifts and cracks. Grass is a buffer, reducing extremes and stabilizing the soil around your foundation.
How Grass Regulates Moisture Around Home Foundations
Three Tips
1. Maintain Proper Grading
The soil must slope away from your foundation. The first 10 feet should have a gentle 5-10% slope. Grass will be most effective when water naturally flows away from the foundation.
2. Water Wisely
Water the grass near your foundation, but don’t over water it. Too much moisture can cause problems. Water early in the morning, as this reduces evaporation and helps the grass absorb moisture.
3. Choose the Right Grass Type
Select grass types suited to your climate and soil. These will better regulate moisture and need less upkeep.
Grass is vital for regulating moisture around your foundation. It absorbs water, reduces runoff, prevents soil erosion, and keeps moisture levels steady. A healthy grass cover and good lawn care can protect your foundation. It will guard against moisture damage and extend your home’s lifespan. Do you need help with your home’s foundation? Contact us today.
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