Site Grading in Savannah, GA

Site grading shapes and slopes your lot so water drains away from the home instead of pooling against the foundation — the single most important step for preventing moisture problems on flat coastal lots.

Why Grading Matters in Savannah

Savannah’s flat terrain gives water nowhere to go. Proper grading establishes slope and swales that carry rain and groundwater away from foundations, crawl spaces, and slabs, protecting the structure from the ground up.

What Site Grading Includes

• Drainage assessment and grading plan
• Establishing slope away from structures
• Swales and positive drainage paths
• Coordination with French drains and downspouts

When You Need Grading

• Water pooling near the foundation
• A wet crawl space or yard
• New construction or additions
• Recurring drainage and erosion issues

Why Site Grading Is Critical for Foundations in Savannah, GA

Site grading is the process of shaping the soil around a structure so that
surface water drains away from the foundation instead of pooling against it.
In Savannah and across coastal Georgia, this matters more than almost anywhere
else in the country. Our terrain is flat, our water table sits close to the
surface, and heavy Lowcountry storms can drop several inches of rain in a
matter of hours. When there is no meaningful slope to carry that water off, it
collects at the base of your walls, saturates the soil, and drives the
moisture problems that lead to settlement and cracking. At Solid Foundation
Repair Of Savannah, we have seen since 1989 how a few degrees of grade can be
the difference between a dry, stable home and one fighting chronic water
intrusion.

Flat ground offers no natural runoff path, so gravity needs help. Proper
regrading gives water somewhere to go before it ever reaches your slab, crawl
space, or footing. On coastal Georgia lots where the ground is already near
the water table, controlling surface water is often the single most effective
step a homeowner can take to protect their structure.

The 6-Inches-Over-10-Feet Rule for Positive Drainage

The accepted standard for protecting a foundation is called positive drainage:
the soil against the house should be the highest point, then slope steadily
downward as it moves outward. The International Residential Code recommends a
minimum fall of six inches within the first ten feet from the foundation,
which works out to roughly a five percent slope. That slope is enough for
gravity to pull rainwater away from your walls before it can soak into the
ground and pressure your footing.

• Soil against the house is the high point. Water should
  always travel away from the structure, never toward it.
• Six inches of drop over the first ten feet. This is the
  target grade for most Savannah residential lots.
• Keep four to six inches of foundation exposed. Piling soil
  or mulch too high traps moisture against the wall and invites rot and pests.
• Compact the backfill. Loose fill settles over time and can
  quietly reverse the slope you just created.

Negative Grade: The Hidden Cause of Foundation Problems

Negative grade is the opposite of positive drainage, where the ground slopes
back toward the house and funnels water into the foundation. In coastal
Georgia this happens for several reasons, and rarely all at once. It shows up
when a lot was graded incorrectly during original construction, when soil
settles over the years, or when new landscaping, patios, or flower beds
unintentionally redirect the flow of water. Because Savannah soils shift with
our wet-dry cycles, a lot that once drained fine can develop a negative slope
without the homeowner ever noticing until the damage appears.

When water is sent toward the slab instead of away from it, the trouble rarely
stays at the foundation. Homeowners often see standing water and soggy ground
near the walls, soil erosion along the perimeter, cracked concrete on walkways
and driveways, and settlement cracks inside the home. Left unaddressed,
chronic saturation is one of the leading contributors to the structural issues
we resolve with
foundation repair.
Correcting the grade first is what keeps those repairs from being needed
again.

Tying Grading Into French Drains, Downspouts, and Erosion Control

Grading is the foundation of good drainage, but on tight Savannah lots it
often works best alongside other systems. Where space is limited or the
natural slope is too shallow, a properly graded swale or perimeter drain gives
water a defined path to follow. We routinely integrate site grading with the
drainage components that protect coastal Georgia homes:

• French drains and swales intercept subsurface and surface
  water where a slope alone cannot carry it far enough away.
• Downspout extensions discharge roof runoff well past the
  graded zone, so gutters do not dump concentrated water right at the
  foundation.
• Erosion and sediment control such as stabilized soil,
  ground cover, and mulch bedding keeps a newly established grade from washing
  out during heavy Lowcountry rains.

Coordinating these systems means water is managed from the roofline to the
property line, not just at one weak point. That layered approach is what holds
up against Savannah’s intense seasonal storms.

Professional Site Grading in Savannah and the Lowcountry

Grading around an existing home is not a simple matter of moving dirt. It
requires reading how water actually travels across your specific lot,
accounting for the high coastal water table, protecting existing utilities and
landscaping, and compacting fill so the slope lasts. Done wrong, regrading can
dig a foundation in too low or create new low spots that hold water. Solid
Foundation Repair Of Savannah brings decades of local experience to every
grading evaluation, and we treat drainage as the first line of defense for
your structure.

If you notice standing water near your walls, mulch beds that stay wet for
days, or soil that has slumped toward the house, your grade may be working
against you. Call us at (912) 642-3890 or
request a free estimate, and we will assess your
drainage and lay out a grading plan built for coastal Georgia conditions.