Landscaping changes, such as adding soil, mulch, or sod near the foundation, can raise the grade around the house. This can happen over time as dirt accumulates, creating an environment where the walls are too close to the ground.

Over time, the foundation of a house may settle or shift, causing the exterior walls to sink lower or become uneven in relation to the surrounding grade. This can reduce the clearance and create potential water management issues.

In areas with poor drainage, rainwater can erode the soil around the foundation, lowering the grade in specific areas. As the ground erodes, the exterior walls may become too close to grade, making them vulnerable to moisture damage.

During construction, the initial grading of the land may not have been done properly. If the foundation was poured at or near grade level without proper excavation, the walls may have been installed too close to the soil, leading to long-term issues.

Over time, soil levels around the foundation can rise due to plant growth, settling, or even poorly designed drainage systems. This gradual rise in the grade can result in the exterior walls becoming too close to the ground.

One of the biggest risks of having exterior walls too close to grade is the increased likelihood of water infiltration. If rainwater or groundwater accumulates near the foundation, it can seep into the walls and lead to moisture damage, mold, and mildew growth.

Consistent exposure to moisture can weaken the foundation and cause cracks, shifting, or settling. This can compromise the structural integrity of your home and lead to expensive foundation repairs.

Wood-based materials in the walls and around the foundation are vulnerable to rot when they are exposed to excessive moisture. Additionally, having a low clearance can allow pests, such as termites and rodents, to enter the home more easily, causing further damage.

Proper clearance between the walls and the grade helps promote air circulation around the foundation. Without this airflow, moisture can accumulate, and the foundation may suffer from increased humidity, which leads to the growth of mold and mildew.

When the grade is too high near the exterior walls, it can block the natural flow of water away from the foundation. This can result in water pooling near the base of the walls, exacerbating moisture-related issues and leading to long-term water damage.

If the walls are too close to the ground, insulation and waterproofing barriers may not function properly, leading to heat loss in the winter and increased energy costs. Additionally, insufficient waterproofing can lead to water seeping into basements or crawl spaces.

The best solution for exterior walls that are too close to grade is to regrade the land around the home. This involves excavating the soil around the foundation to lower the grade, ensuring that there is sufficient clearance between the walls and the ground. Proper regrading should ensure that water drains away from the foundation.

If poor drainage is causing soil buildup near the walls, installing proper drainage systems such as French drains, trench drains, or downspout extensions can help redirect water away from the foundation. This will reduce the risk of erosion and prevent water from pooling near the walls.

For areas that cannot be regraded or are difficult to adjust, installing a foundation barrier such as a moisture-resistant membrane or vapor barrier can help protect the walls from water infiltration. These barriers are designed to create a protective shield between the walls and any moisture in the soil.

If landscaping features like flower beds, lawns, or trees are contributing to the raised grade, you may need to adjust their placement or height. Planting beds should be positioned a few inches away from the foundation to avoid direct contact with the walls.

In areas with high water tables or heavy rainfall, a sump pump can help manage excess water around the foundation. This pump will direct water away from the home, preventing it from accumulating near the walls.

In addition to regrading and improving drainage, it's important to seal any cracks or gaps in the foundation walls. Use high-quality sealants and caulk to prevent water from entering and ensure that the walls remain protected.

Regularly inspect the exterior of your home, especially after heavy rain or storms, to check for signs of water pooling around the foundation or erosion. Early detection can prevent more serious issues later on.

Ensure that gutters and downspouts are clean and functioning properly. Extend downspouts to direct water away from the foundation and prevent soil erosion near the walls.

Be mindful of any changes to landscaping around your home. Ensure that soil levels do not rise above the proper grade, and that any plants or trees do not contribute to blocking the flow of water.

Maintain adequate ventilation around the foundation by installing vents or air bricks in crawl spaces or basements. This helps to regulate moisture levels and prevent water damage.