If you’re looking to build a retaining wall that holds its ground and looks great doing it, armour stone might be the perfect choice. Known for its bold appearance and incredible strength, this material is ideal for Ontario homeowners who want to improve their landscape with something that lasts.
In a province where freeze-thaw cycles, clay-heavy soil, and heavy rain can wear down weaker materials, armour stone retaining walls offer both function and style. From small garden walls to large slope-stabilizing structures, let’s explore how armour stone can bring lasting value to your outdoor space.
Why Build with Armour Stone?
Strength That Stands Up to Ontario Weather
One of the biggest reasons homeowners in Ontario turn to armour stone is durability. These large pieces of natural limestone or granite can handle the harshest conditions, whether it’s heavy rainfall or icy winters.
Guillotined armour stone, in particular, is prized for its clean, consistent shape, which helps with stacking and improves the overall look of the wall.
Adds Character to Your Outdoor Space
Beyond strength, armour stone brings a rugged, natural feel to your landscape. Each piece has its own texture, shape, and colour tone. That variation gives your garden wall or patio border a unique, eye-catching design that works with both modern and rustic styles.
Popular Armour Stone Wall Applications
Small Retaining Walls for Gardens and Yards
If you’re dealing with a small slope or want to raise a garden bed, a short retaining wall using armour stone (under 3 feet tall) can add structure and charm to your backyard. These walls also improve drainage and help keep soil in place during heavy rains.
Large-Scale and Tiered Designs
For homes on hills or properties with uneven ground, armour stone is ideal for building large, multi-tiered retaining walls. Tiered walls aren’t just about stability; they also help divide up your space and create levels for planting, seating areas, or even patios and interlock walkways.
Armour Stone Sizes and Cost in Ontario
Most armour stones range from 0.5 to 2 tons per piece. That gives you flexibility depending on the size of your retaining wall and the look you’re after. The final cost will depend on factors like site access, wall size, and how much prep work is needed before wall installation. For a clear estimate tailored to your project, it’s best to speak directly with our landscape construction expert.
What to Expect During Wall Installation
Building an armour stone retaining wall isn’t a weekend DIY. It takes equipment, planning, and knowledge of proper drainage and structural support.
Step 1: Site Prep
We start by clearing the area, removing vegetation, and levelling the base. A compacted gravel base is crucial to help support the heavy stones and prevent settling over time.
Step 2: Choosing the Right Stone
We prefer guillotined armour stone because of its clean edges and consistent size. For small garden walls or larger landscaping projects, matching the stone size to your slope and layout is key to long-lasting results.
Step 3: Stacking and Backfilling
Each stone is placed carefully for maximum stability. We also add backfill and drainage pipe behind the wall to relieve pressure and prevent water damage, a must-have for Ontario’s freeze-thaw cycles.
Armour Stone Retaining Wall Maintenance
While these walls are low-maintenance, a few simple steps go a long way toward keeping them in great shape:
- Inspect regularly for loose stones, cracks, or signs of shifting
- Clean with a pressure washer occasionally to remove dirt and keep colours looking fresh
- Check your drainage system and clear out blockages so water doesn’t build up behind the wall
Common Retaining Wall Issues (And How to Avoid Them)
Even the toughest armour stone walls can run into trouble if they aren’t installed or maintained properly.
- Erosion
Solution: Install proper drainage, like weep holes or gravel backfill, and avoid planting too close to the wall. - Shifting Stones
Solution: Make sure the base is well-compacted and level. Address movement early before it becomes a bigger problem. - Drainage Blockages
Solution: Clean pipes or fabric barriers behind the wall seasonally to prevent water pressure from building up. - Cracking or Settling
Solution: Start with a solid foundation and use weather-resistant materials during wall installation to minimize long-term damage.
Final Thoughts
Armour stone retaining walls offer lasting value for your landscape. With the right planning, proper installation, and a bit of ongoing care, they can stand the test of time, protecting your property, adding curb appeal, and creating spaces you’ll enjoy for years to come.
If you’re looking to start a landscape project in Ontario that involves slope support, drainage, or defining outdoor living areas, contact us to learn more about our armour stone services. We proudly serve homeowners and businesses with fast and efficient retaining wall installation built to match your vision.
FAQ: Armour Stone Retaining Walls
How long do armour stone walls last?
With proper installation and drainage, they can last 25+ years, making them a solid long-term investment.
Can they be used for patios or driveways?
Absolutely. Armour stone can border patios, walkways, and driveways, adding structure and visual appeal.
Is guillotined armour stone worth the extra cost?
Yes—especially for clean, straight lines in wall design. It makes stacking easier and helps create a polished look.
Do I need a permit for a retaining wall?
You may, especially for walls over 1 meter tall. Check with your local municipality or ask your contractor to assist.