Retaining walls are a functional and aesthetic addition to many landscapes. While their primary purpose is to prevent soil erosion and manage water runoff, they can also be structured to add beauty and value to a home. However, the construction of a retaining wall is more than just piling up stones or concrete blocks. It requires careful planning and execution. Here are six common mistakes that homeowners and builders often make when constructing a retaining wall, and how to avoid them to ensure a durable and effective wall.
1. Neglecting to Plan for Proper Drainage
One of the most crucial aspects of a retaining wall is its ability to handle the water that collects behind it, especially during heavy rains on properties with clay soils. Without proper drainage, water pressure can build up behind the wall, leading to bulging or collapse. Avoid this by installing a drain in at least one course of the wall and incorporate drain tile behind it and backfill around it to allow water to escape.
2. Underestimating the Force of Soil
The weight of the soil that a retaining wall holds back is immense, and without an adequately built structure, it won’t be long before the wall gives way. Avoid this by understanding the physics involved, including the angle of repose for the soil and the type of soil you’re working with — whether it’s loose granular soil or heavy clay. This understanding will influence the materials and design you choose.
3. Using Inferior Materials
Cutting corners by using low-quality materials will only lead to problems down the road. Whether it’s the wrong type of backfill, insufficient base material, or poor quality blocks or timbers, subpar materials can cause a retaining wall to fail. Avoid this by doing your research and selecting high-quality products that will stand the test of time and weather conditions.
4. Ignoring Local Building Codes
Many locations have specific codes and regulations that dictate the construction of retaining walls, especially ones over a certain height. Failing to comply can not only result in a wall that’s not up to par but also legal issues. Avoid this by checking with your local building authorities for guidelines and obtaining any necessary permits before starting your project.
5. Skimping on the Base
The foundation is what supports your entire retaining wall structure, and a weak base is a recipe for disaster. Compact soil and the use of a sturdy base material are essential for longevity. Avoid this by laying a solid groundwork of crushed stone or gravel and ensuring it’s well-compacted before beginning to build your wall.
6. Overlooking Aesthetics
While the main function of a retaining wall is arguably utilitarian, it also plays a significant role in the overall look of your outdoor space. A poorly-designed wall that looks out of place can detract from your property’s beauty. Avoid this by factoring in the aesthetics during the design phase — choose materials and a look that complement your landscape and home’s exterior.
Get Your Dream Backyard With Help From the Experts
Whether you need to renovate your existing landscaping to enhance function with the creation of a retaining wall, or want to have an expansive outdoor living area constructed with a patio, kitchen and fireplace to fully enjoy the summer nights, contact the team at Peters’ Patio & Landscape today.
