Considering a cost-effective and straightforward approach to build retaining walls? DIY enthusiasts have discovered a method that involves using concrete bags, without the need for adhesive or mortar. The concept is undoubtedly innovative, where the bags of concrete are laid similarly to Lego pieces, maintaining them in their original packaging, and thoroughly drenching them with a hose.
The question of stability is essential for any structure. Stacked concrete bags might not be sufficient to endure the soil's pressure or other external forces. The method includes driving rebar into the bags as a reinforcement before drenching the concrete. This not only provides additional strength but also helps keep the wall perfectly vertical - a common challenge faced while building these walls. This step is vital, especially for fences that are only two or three bags high.
To address concerns about the concrete bags breaking down over time or due to external factors like tree roots, using a product like Quikrete's RIP RAP that's specifically designed for such projects, can help. It's essential to allow the concrete sufficient time to cure before the bags begin to rot; this ensures that the structure stands firm.
Another crucial aspect of these structures is managing moisture. It is recommended to have a gravel-lined area and an effective drainage system behind the retaining wall to prevent water accumulation. Trapping moisture behind the wall could inadvertently increase pressure on the wall, thereby causing it to fail.
Concrete bag walls are versatile. You could achieve a different look by remodelling the concrete in smaller lunch bags to create "bricks". Creativity can be tapped in building structures like sunken fire pits.
The slightly rugged and raw aesthetics of these concrete bag walls are endearing to some. However, if the bag begins to deteriorate over time, it could potentially crumble, leading to an undesired visual appeal. Some alternatives include maintaining the current aesthetic by using a transparent material like fiberglass or gauze across the wall's top layer and front.
Usage of concrete bags in wall building projects may take a bit longer than traditional methods, and costs may seem high compared to conventional forming and pouring. But conversely, these walls are holding up impressively over an extended period, and the repair or replenishment costs are minimal, making it quite cost-effective in the longer run. Additional measures like taping the bags and ensuring thorough mixing before use can further enhance the durability and longevity of these walls.
Building a wall using concrete bags presents a simple DIY solution compared to the standard techniques traditionally used. With some ingenuity and attention to detail, these projects can result in functional and aesthetically pleasing structures, at a fraction of the usual cost and effort.
