A guide to Retaining walls
​Retaining walls are more than just a structural necessity for sloping yards - they can elevate the aesthetics of your outdoor space, transforming challenging terrain into a functional and visually appealing landscape. If your're considering a full garden makeover, particularly if your yard has slopes or elevation changes, here's what you need to know about retaining walls, their benefits, and options available.
Why Are Retaining Walls Important? Retaining walls serve two primary purposes: managing soil erosion and creating usable space. For homes with sloped yards, these walls prevent soil from sliding or washing away during rain, protecting your landscape and the structural integrity of your property. Additionally, retaining walls allow you to maximize your outdoor area by creating terraces, flat planting beds, or areas for patios and walkways. But a retaining wall isn’t just about function—it can also add depth, texture, and visual interest to your garden design, blending seamlessly into the overall aesthetic. Key Considerations When Choosing a Retaining Wall Choosing the right retaining wall goes beyond just picking a material. Here are a few factors to keep in mind when planning for your garden makeover: Height and Slope of the Yard The steeper the slope, the stronger your retaining wall needs to be. Taller walls often require professional engineering to ensure they can handle the load. Soil Type Clay soils expand and contract with moisture, which can place additional pressure on a wall. Sandy or loamy soils may not hold as much moisture but may still shift. Your soil type will influence the type and design of the wall. Drainage Proper drainage is critical to the longevity of your retaining wall. Without it, water can build up behind the wall, increasing pressure and potentially causing failure. Built-in drainage systems, such as weep holes or gravel backfills, can help manage this. Local Regulations and Permits Councils require permits for retaining walls over 600mm height. For larger or more complex walls, a structural engineer may be required to sign off on the design and certify construction. Aesthetic Appeal Retaining walls should blend with your landscape and the architecture of your home. Natural stone walls provide a classic, upscale look, while concrete block or gabion walls can add a modern touch. Consider materials that complement your garden’s overall design. Cost and Budget The cost of building a retaining wall varies depending on materials, height, and the complexity of the project. Natural stone or custom masonry may increase the price but add to the overall luxurious feel of your garden. Professional Installation Due to the engineering required, especially for larger or more complex projects, retaining walls are not typically DIY-friendly. Working with a professional landscape construction team ensures that your wall is both structurally sound and aesthetically aligned with your vision.
