Premium Landscape Retaining Walls Built to Last for Decades
Structural Retaining Wall Specialists in Calgary.
Calgary Landscaping is a Techo-Bloc certified residential retaining wall builder
Building Retaining Walls
Retaining walls keep soil, rocks, and other materials in place, preventing erosion and land movement. They are a great addition to of many landscape designs, providing stability to sloped terrain, protecting against soil erosion and creating level ground for more usable areas.
There are several types of retaining walls: precast retaining wall blocks, natural rock retaining wall stones, garden retaining walls, and wood retaining walls.
Schedule a free consultation with us for wall design + construction options.
Precast Retaining Wall Blocks
Precast retaining wall blocks are made of concrete and are designed to interlock to form a strong and long-lasting retaining wall. These blocks are manufactured in a variety of shapes and sizes, allowing for greater flexibility in designing the retaining wall to meet specific requirements. The blocks can be arranged in various patterns to produce various textures and appearances.
The ease of installation is one of the most significant benefits of precast retaining wall blocks. The blocks’ interlocking design makes installation simple, and they can be assembled quickly without the use of any special equipment or tools.
Furthermore, because precast retaining wall blocks are resistant to weathering, they require little maintenance over their lifetime.
Retaining Wall Materials
Retaining walls provide essential structural support while offering flexibility in form, finish, and elevation. Material choice defines the boundary of the landscape and how your vertical space is experienced. We pair technical construction decisions with design intent to ensure seamless transitions, functional terracing, and long-term structural balance. The result is a wall that feels like a natural extension of your property rather than a visual disruption.
Choose from some of the most popular retaining wall materials available in Calgary
Specialized Material Selection for Longevity
Every site in Calgary has different needs from the steep slopes of the NW to the flat expansive lots in the deep SE. We offer specialized material selections including heavy-duty natural boulders for a rugged aesthetic, pressure-treated timber for a natural look, and pre-cast concrete block systems for maximum vertical strength. We match the material to your specific site elevation to ensure a lifetime of durability.
Pro Tip: Many of our structural builds include integrated Landscape Lighting to complete the high end landscaping look.
Structural Integrity for Calgary’s Heavy Clay Soils
Calgary’s unique soil composition, primarily composed of heavy, expansive clay, creates significant lateral pressure on backyard structures.
Without specialized backfill techniques, these soils can cause standard walls to lean or fail within just a few seasons.
We prioritize the structural integrity of every build by utilizing clear-crushed stone and non-woven geotextile fabrics to ensure your wall stays plumb and stable regardless of soil movement.
Garden Walls
Garden walls offer a refined approach to dimension, texture, and greenery. Material choice—from weathered natural stone to crisp concrete masonry—determines how these borders interact with the softscape and define the garden’s personality.
Proportion and placement are guided by the landscape’s architecture and the desire for elevated planting beds. Design decisions are made to introduce depth through terracing and focal points, ensuring optimal drainage and soil health. The result is a structural element that prioritizes ornamental beauty, creating a curated environment that feels intentionally integrated rather than purely utilitarian.
Choose from some of the most popular garden wall materials available in Calgary
Boulder Retaining Wall Installation
Natural rock retaining walls offer a rustic, un-duplicated character that only quarried stone can provide. Their organic shapes and textures ensure the structure feels like an inherent part of the landscape rather than an addition.
Beyond their aesthetic, the primary advantage of natural stone is its immense durability; these walls are built to withstand extreme pressure and weathering for generations.
While the irregular scale of the stone requires specialized professional installation, the result is a high-value, cohesive feature that bridges the gap between rugged utility and timeless design.
Wood Retaining Walls
Wood retaining walls offer a warm, organic aesthetic that adapts seamlessly to styles ranging from rustic logs to modern horizontal planks. Constructed from pressure-treated timber, these walls provide a natural texture that softens the transition between structural elements and the landscape.
The primary advantage of timber walls is their immense versatility and straightforward installation. While wood requires more consistent upkeep such as periodic linseed oil applications to prevent warping and decay it remains a popular choice for those seeking a cost-effective, high-character boundary.
With proper care, a wood wall provides a timeless, integrated look that complements any outdoor living space.
Managing Alberta’s Intense Freeze-Thaw Cycles
In our local climate, the frost line and rapid temperature swings can lead to “ice heaving,” where water trapped behind a wall freezes and pushes the blocks forward.
To prevent this, our retaining wall systems include integrated drainage solutions, such as perforated pipe “weepers” and dedicated gravel drainage zones.
This precision drainage ensures that hydrostatic pressure is neutralized before it can damage your landscape investment.
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Retaining Wall FAQs
Retaining Wall Installation FAQs for Calgary Homeowners
How high can a retaining wall be in Calgary before it needs engineering?
Retaining walls above certain heights typically require engineered design to ensure stability and safety. In Calgary, height limits are influenced by soil conditions, drainage, and applied loads. Engineering requirements are confirmed based on wall height, location, and site specific conditions.
Do retaining walls need drainage?
Yes, proper drainage behind a retaining wall is essential to reduce pressure buildup that can cause movement or failure. Calgary’s snowmelt and seasonal runoff make drainage design especially important. Drainage solutions are tailored to soil type and site conditions.
Why do Retaining Walls Fail?
Retaining walls typically fail due to inadequate drainage, insufficient footing depth, poor compaction, or lack of reinforcement. Calgary’s freeze-thaw cycles and variable soils increase these risks. Most failures are the result of shortcuts taken during design or installation.
How deep should a retaining wall footing be?
Footing depth must be sufficient to prevent frost movement and support the weight of the wall. In Calgary, frost depth and soil conditions require deeper footings than in milder regions. Exact footing requirements depend on wall height and site specific factors.
Can you build a retaining wall on top of another wall?
In some cases, stacked or tiered retaining walls can be built when designed correctly. Load transfer, drainage, and reinforcement must be addressed to avoid structural failure. Whether this is possible depends on wall heights, spacing, and soil conditions.
What materials are best for retaining walls in Calgary?
Common retaining wall materials include segmental concrete blocks, natural stone, and reinforced systems. Each material performs differently in freeze-thaw conditions and varying soil types. Material selection is based on structural needs, aesthetics, and exposure.
What is geogrid and do retaining walls need it?
Geogrid is a soil reinforcement used behind retaining walls to improve stability. In Calgary, geogrid is often required for taller walls or those supporting additional loads. Its use is determined by wall height, soil type, and design requirements.
Can a retaining wall be built on a slope?
Yes, retaining walls are commonly used to manage sloped properties by creating level areas and preventing erosion. Sloped sites may require stepped or reinforced wall systems. Final design is based on slope angle, soil stability, and drainage paths.
Do you need a permit for a retaining wall in Calgary?
Permits may be required depending on wall height, location, and impact on grading or drainage. Calgary’s permit requirements vary by project scope. Permit needs are verified during the planning phase of the project.
How long do retaining walls last?
A properly designed and constructed retaining wall can last several decades with minimal maintenance. Longevity depends on materials, drainage quality, soil conditions, and exposure. Routine inspections help identify movement early.
What maintenance do retaining walls require?
Retaining wall maintenance typically involves checking drainage outlets, monitoring movement, and clearing debris. Calgary’s seasonal changes can affect soil and water flow over time. Maintenance needs vary based on wall design and materials used.
What is the best retaining wall material for Calgary's sloped yards?
For the varying elevations in areas like SE Calgary and Priddis, we recommend natural Rundle stone or high-durability pre-cast concrete blocks. These materials are specifically chosen to withstand Calgary’s freeze-thaw cycles and provide the structural integrity needed for heavy spring runoff and drainage management.