What Keeps a Retaining Wall Standing
Walls fail for predictable reasons: poor base, no drainage, inadequate reinforcement. Our builds address each one:
- An excavated, compacted gravel footing below the first course
- Clean gravel backfill and a perforated drain pipe behind the wall to relieve water pressure
- Geogrid reinforcement layered into the soil on taller segmental walls
- Setback or batter so the wall leans slightly into the slope
Wet clay is heavy, and water behind a wall is the most common cause of failure here. Where runoff is severe, we may tie in a French drain.
Material Comparison
Ranges below are typical, not quotes; your price depends on height, length, access and site conditions.
- Concrete block: about $20 to $40 per sq ft of wall face; often lasts 30 to 50 years.
- Segmental systems such as Allan Block or Versa-Lok: about $25 to $45 per sq ft; similar lifespan.
- Natural stone: about $30 to $60 per sq ft; can last 50 years or far longer.
- Poured concrete: about $25 to $50 per sq ft; commonly 40 to 60 years.
- Timber: about $15 to $30 per sq ft; shorter life, often 10 to 20 years.
Most residential retaining walls total between about $3,000 and $12,000.
Step-by-Step Wall Construction
- Site evaluation: slope, soil, water flow and nearby structures
- Design and material selection, with engineering for taller walls
- Excavation and base preparation
- Wall courses, reinforcement, drainage and backfill in lifts
- Caps, final grading and cleanup
A typical wall takes two to four days; long or tall walls take more. For lower decorative walls, see retaining and garden walls.
When a Wall Is Part of a Bigger Problem
Sometimes a slope pressing on a house or a wall cracking near the foundation points to deeper issues. In those cases we look at grading and drainage around the whole home, and may recommend a foundation evaluation as well.
Common Questions
Do I need a permit for a retaining wall in Lafayette County?
It depends on wall height, location and the jurisdiction. Taller walls and walls near property lines or structures are more likely to need approval or engineering. We check before building.
What is the best retaining wall material for Mississippi?
Segmental block and natural stone are the most popular because they handle clay soil movement and last for decades. Poured concrete suits very tall or tight spaces. Timber is cheaper but shorter-lived.
Can you build a retaining wall on a steep slope?
Yes. Steep slopes often call for terracing with two or more shorter walls, or a reinforced engineered wall. We evaluate the site before recommending an approach.
Why is my old wall leaning?
Leaning usually means water pressure behind the wall, a weak base or missing reinforcement. A wall that is actively moving often needs to be rebuilt with proper drainage.