Retaining wall systems are undeniably one of the best hardscaping features to introduce to your landscape. Their importance has spiked so much in recent years that the question has changed from “if” to “when are you installing a retaining wall in your yard?” However, before making any decisions, understanding the options available is fundamental.
Our specialists at Nelson Landscaping & Hardscaping explain the four different types of retaining walls, including their pros and cons, so you can make the choice that best fits your garden. And even better, we also discuss what retaining walls do, additional designs, and the most common building materials in the industry. Use this guide as your first step towards a functional, gorgeous lawn.
What Does a Retaining Wall Do?
A retaining wall is an engineered structure often made of stone or concrete that holds back soil or rock on one side while allowing a different, lower ground level on the other side. The principal uses of retaining walls are:
- Create flat terraces for patios, parking pads, or gardens.
- Protect foundations and landscape features from soil erosion and runoff.
- Channel water away from basements and walkways.
- Add dimension, seating, or focal points to a landscape’s design.
In short, retaining walls combine strength and style to make your outdoor spaces safer and more usable. Commonly, there are four main retaining wall options, and the one best suited for your landscape will largely depend on location, structural needs, aesthetic goals, drainage, and soil type.
The Main Different Types of Retaining Walls
1. Gravity Retaining Walls
One of the most famous retaining walls types is gravity walls. These constructions rely on their own mass to counter the push of the soil behind them. Built of heavy materials such as natural stone, concrete block, and large precast modular units, they are widest at the base and taper slightly toward the top.
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2. Cantilever Retaining Walls
Cantilever walls form an inverted “T” or “L” shape. A thin reinforced-concrete stem rises from a wide base slab that extends beneath the backfill (the heel) and out toward the open side (the toe). The weight of soil on the heel presses the slab down, delivering stability and converting overturning forces into helpful downward pressure.
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3. Anchored Retaining Walls
Among the different types of retaining walls, we have anchored walls. These add tensioned tie-backs (basically high-strength steel rods or cables grouted into horizontal boreholes behind the wall) to supplement a slender facing made of concrete, masonry, timber, or metal. Once stressed, the anchors hold the face in place, allowing very tall or slender walls even in soft soils.
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4. Sheet Pile Retaining Walls
Sheet pile walls are thin interlocking planks (usually steel, vinyl, or fiberglass) that are driven or vibrated vertically into the ground, forming a continuous wall. Above grade, the exposed sheet provides lateral support to the soil; below grade, the embedded length provides resistance.
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Other Types of Retaining Walls
There are many different retaining walls besides the ones mentioned above. However, the most popular of these are:
Gabion Retaining Wall
Gabion walls are wire mesh baskets filled with rock. Stacked like oversized crates, they create a porous, flexible wall that drains freely.
- Pros: Quick to assemble; adapts to minor ground movement; excellent drainage; integrates beautifully with natural landscapes.
- Cons: Wire may rust if not coated; baskets can bulge over time; not ideal for tight footprints.
Hybrid Systems
Hybrid walls are also part of the different types of retaining walls. These structures combine two more principles (such as a gravity-stone veneer over a concrete cantilever core) to balance strength, drainage, and aesthetics.
- Pros: Tailors performance to site needs, allows creative finishes, and can reduce material waste.
- Cons: Requires careful detailing where systems meet, and multiple trades may be involved.
Counterfort Retaining Wall
Similar to a cantilever wall but with thin triangular concrete webs (counterforts) spaced along the back of the stem, tying the wall face to the footing.
- Pros: Reduces concrete volume for very tall walls; counterforts act like hidden buttresses resisting bending.
- Cons: More formwork and excavation; counterforts limit space behind the wall.
Crib Retaining Wall
Finally, among the different types of retaining walls, we have crib walls. Open grid cells made of precast concrete or timber interlock like giant “Lincoln Logs.” The cells are then filled with crushed stone.
- Pros: Uses less solid material, drains naturally, and can be planted with vegetation for a living wall look.
- Cons: Timber versions are prone to rot; concrete cribs may shift in highly plastic soils; not suited for extreme heights.
Common Retaining Wall Materials
- Concrete Block: Lightweight modular units ideal for DIY gravity walls and curved layouts.
- Poured Concrete: Strong, moldable, and perfect for sleek, modern lines or structural cantilever walls.
- Natural Stone: Timeless beauty, high mass, and excellent durability, especially Pennsylvania bluestone and fieldstone, both popular options in our region.
- Timber: Pressure-treated pine or hardwood is economical for short garden walls but has a shorter lifespan.
- Steel & Vinyl: Steel offers strength, while vinyl resists corrosion in brackish water.
- Geosynthetics: Geogrids and geotextiles reinforce soil in segmental block systems, allowing taller walls without concrete.
Elevate Your Landscape with Our Retaining Wall Design and Construction in Bristol, PA!
In conclusion, the four different types of retaining walls are: gravity, cantilever, anchored, and sheet pile. Each of these serves a unique function and brings a wealth of benefits and disadvantages to the table. If you need help deciding which would fit your garden perfectly, Nelson Landscaping & Hardscaping is here for you.
We are the go-to contractors for hardscaping and landscaping projects in Bristol, PA, and the surrounding areas. Our local, licensed, and insured crew provides leading retaining wall construction, assisting you in selecting from the various types available depending on your needs and preferences. Whether you need to manage steep slopes, prevent landslides, or simply enhance your yard, rest assured that we deliver the quality craftsmanship and attention you deserve!