Yes, sandstone is an excellent choice for retaining walls—especially in Mackay’s coastal and rural areas. It’s strong, durable, and has a natural look that fits most landscapes. With proper installation and drainage, sandstone walls can last 30–50 years or more.
Why Use Sandstone for Retaining Walls?
Sandstone has been used in Australian landscaping for generations—and for good reason. Here’s why it remains a top pick:
- Natural beauty – Each block has a unique colour and texture, giving a timeless look to gardens and outdoor spaces.
- Strong and heavy – Its dense structure holds back soil and handles pressure well.
- Blends with the environment – Perfect for coastal or bushland properties where you want something that looks natural and local.
Pros of Sandstone Retaining Walls
- Durability – Sandstone can last decades when properly maintained.
- Low maintenance – Doesn’t require sealing or painting.
- Resistant to pests and rot – Unlike timber, sandstone won’t degrade from termites or moisture.
- Adds property value – A well-built stone wall boosts curb appeal and looks premium.
Any Downsides?
- Cost – Sandstone is more expensive than concrete blocks or timber.
- Heavy to handle – Each block can be bulky, so you’ll need help or machinery.
- Needs a solid base – If not laid properly, sandstone walls can shift or settle over time.
How Long Does a Sandstone Retaining Wall Last?
With proper base preparation, drainage, and construction:
- Lifespan: 30–50 years or more
- Factors that affect lifespan:
- Poor drainage (can cause erosion or movement)
- Unstable ground or inadequate foundations
- Frequent heavy rain (common in Mackay) without proper water diversion
Tip: Using gravel backfill and ag pipe behind the wall helps prevent water build-up and extends the wall’s life.
Is Sandstone Right for Mackay Weather?
Absolutely. In Mackay’s hot, humid climate, sandstone holds up better than many other materials. It also suits the region’s natural look, especially in:
- Rural properties
- Coastal homes
- Garden terraces or sloped yards
Plus, Mackay’s clay soils can shift with moisture changes. Sandstone’s weight and stability make it less likely to move than lighter wall types.
Where to Buy Sandstone Retaining Wall Blocks in Mackay
At Diggers Landscape Supplies, we stock high-quality sandstone blocks in various sizes and colours. Whether you’re building a feature wall or supporting a slope, we can help you choose the right type and deliver it straight to your property.
Need Help Planning a Sandstone Wall?
Come visit Diggers Landscape Supplies in Bucasia or explore our range online. We’ll walk you through base prep, drainage tips, and block options so your sandstone wall stands strong for decades.
Frequently Asked Questions
Does sandstone need sealing?
Not always. Most sandstone used for retaining walls is left raw. If you want to reduce staining or moss build-up, sealing is optional.
Can sandstone walls be DIYed?
Yes, for low walls under 1 metre. But it’s labour-intensive. For anything taller or structural, it’s best to hire a professional.
Is sandstone better than concrete blocks?
It depends on your goals. Concrete blocks are easier to work with and cheaper. Sandstone offers a premium, natural look and lasts just as long—if not longer.
