The Problem: Failing Materials and Unsafe Conditions
Before we broke ground, we assessed the homeowner's outdoor space. The issue was clear: the old wooden retaining wall, composed of railroad ties, had decayed to the point of collapse. Years of erosion and shifting soil had compromised the integrity of the landscape, and the concrete sidewalk nearby showed signs of crowding due to soil movement.
The homeowner had lost the entire side yard to erosion and instability. The area was not only difficult to maintain but also posed a threat to property and safety. That’s where we came in.
The Process: Step-by-Step Masonry Construction
1. Excavation and Demolition
We began by carefully removing the old timber logs and clearing the area of vegetation, debris, and unstable soil. Excavation was done in layers to prevent unnecessary soil disruption and to preserve the grade line for proper drainage.
2. Sidewalk Modification for Structural Access
To ensure there was adequate room for both the limestone retaining wall and proper base installation, we made precision cuts into the existing concrete sidewalk. This allowed us to prepare the area for a true-to-form masonry base — a detail many overlook but one that ensures long-term durability.
3. Laying the Groundwork: Fabric & Base
Once the space was cleared, we installed landscape fabric to act as a barrier between soil and stone. This fabric helps retain solid material while allowing water to pass through, a crucial step for drainage and longevity.
After that, we began adding and compacting a crushed limestone base. This isn’t just filler — it’s the backbone of the wall. A properly compacted base ensures the wall won’t shift or sink over time. Each layer was tamped and leveled with care.
4. First Course: Building the Foundation
The first course of limestone blocks was set with absolute precision. We used a leveling system to ensure this base layer was straight and true. Every block was dry-stacked, and liquid nails were used between courses to secure the blocks without relying on visible mortar lines.
5. Reinforcement Through Step-Back Construction
Each new course of block was recessed 1 inch from the previous layer. This method — known as “step-back” construction — strengthens the wall by using gravity and backward pressure to support the soil. This technique not only improves stability but also improves water runoff.
6. Backfilling with Crushed Limestone
With the wall fully stacked and set, we began backfilling behind it using more crushed limestone. This material helps with drainage and prevents hydrostatic pressure, a common issue that can lead to wall failure if not addressed.
The Result: A Restored and Reclaimed Outdoor Space
Once the last block was set and the area was backfilled and compacted, the transformation was undeniable. What was once a hazard and eyesore became a secure, clean, and reclaimed part of the property. The homeowner regained a side yard that had been lost to erosion and decay. More importantly, he gained peace of mind.
Not only did we restore functionality to the space, but we also improved property value and long-term sustainability by using limestone — a durable and timeless material well-suited to San Antonio’s soil and climate.
Built to Last, Crafted with Precision
This project is a perfect example of how thoughtful masonry can solve long-term problems, improve safety, and enhance the aesthetics of a home. Temporary fixes like timber ties can’t compare to the strength and permanence of stone. At Modern Craft Masonry, we believe in doing things right the first time — with craftsmanship that lasts for generations.
