Kandla Grey Umbra Sandstone Walling

Elevate your garden or outdoor space with the understated charm of our Natural Stone Walling in soft grey—a timeless solution that blends classic appeal with contemporary style.

Expertly crafted from Umbra Sandstone, also known as Kandla Grey, this popular choice for garden walling and paving delivers the cool, sophisticated tones that continue to be a favourite among modern landscapers and homeowners alike.

Quarried in India and ethically sourced, our sandstone and limestone walling reflects our commitment to sustainability and fair trade. By working directly with trusted suppliers, we’re able to ensure top-quality materials—while offering unbeatable value to our customers.

More than just beautiful, this natural stone is highly permeable, helping to absorb rainwater and reduce runoff—ideal for properties with limited drainage. It’s a practical and eco-conscious choice that performs just as well as it looks.

Each stone is cut from larger blocks of native Indian sandstone, giving every piece a unique blend of grey shades and natural variation. This means no two stones are exactly alike, adding texture and depth to your walling with an organic, eye-catching finish.

- Hand-cut edges and textured, pitch-faced surfaces give the walling a rustic, artisanal look.

- Slight variations in thickness and a gently tumbled profile enhance the natural, weathered aesthetic.

- Perfect for both traditional and modern garden designs, from borders and raised beds to feature walls and outdoor seating.

In essence, our Grey Sandstone Walling is more than just a boundary—it’s a statement of natural elegance. Durable, stylish, and rich in character, it’s the ideal choice for creating a space that feels both grounded and refined.

Umbra Kandla Grey Walling for Your Garden

Sandstone walling is not only a durable building material—it also brings structure, beauty, and versatility to outdoor spaces. Whether you're designing for function or style, sandstone can enhance your garden in a variety of impactful ways.

1. Define Boundaries and Create Enclosures

Use sandstone walling to clearly mark the edges of your garden, separate zones within your landscape, or establish a barrier between your garden and neighbouring areas. It offers both privacy and a sense of structure while blending naturally with the surroundings.

2. Build Strong Retaining Walls

In sloped or uneven gardens, sandstone is an ideal material for retaining walls. These sturdy structures help prevent soil erosion, support tiered landscaping, and create level areas for planting, patios, or pathways.

3. Construct Raised Garden Beds

Sandstone walling is perfect for raised beds, allowing you to grow flowers, vegetables, herbs, or shrubs with ease. Raised beds offer improved drainage, warmer soil, and make planting and maintenance more accessible.

4. Add Seating and Elegant Edging

Low sandstone walls can double as informal seating, offering a practical spot to relax and enjoy your garden. It also works beautifully as edging around flower beds, walkways, or water features—adding definition and a touch of timeless charm.

5. Create Decorative Architectural Features

Elevate your outdoor space with ornamental sandstone elements such as columns, arches, or freestanding feature walls. These architectural additions introduce texture and visual interest, enhancing your garden’s overall design.

6. Enhance Water Features

Sandstone's natural tones and weather-resistant properties make it ideal for pond surrounds, waterfalls, and fountain borders. It adds a calming, organic look that perfectly complements the soothing qualities of water.

From structure to style, sandstone walling is a multifunctional choice that combines natural beauty with practical benefits. Whether you're shaping the layout or adding standout features, it’s a reliable and elegant addition to any garden design.

Available Sizes

210mm x 100mm

250mm x 100mm

300mm x 100mm

(Thickness varies between 50mm-70mm)

Also available to pick up from our depots in Ferndown, Bournemouth, and Dorchester.

Visit the Christchurch Showroom if you want to see our Walling range on display.

How to Build a Stone Wall  

Constructing a stone wall with sandstone requires thoughtful planning, precise execution, and a solid foundation. Follow this step-by-step guide to create a durable, attractive wall that adds both structure and charm to your outdoor space.

1. Prepare the Site

Clear the Area: Remove any plants, debris, or obstacles from your chosen wall location.

Mark the Layout: Use stakes and string to outline the shape and dimensions of your wall. This ensures straight lines and accurate alignment.

2. Excavate for the Foundation

Dig the Trench: Excavate a trench deep and wide enough to support your base layer. Depth typically ranges from 6–12 inches, depending on wall height.

Compact the Soil: Use a tamper to create a firm, even surface at the bottom of the trench.

3. Lay the Base Course

Add a Gravel Layer: Pour in crushed stone or gravel for drainage and stability.

Set the First Stones: Lay your first course of sandstone walling stones, ensuring they are level and tightly aligned to your layout line. Take time here—this layer sets the tone for the rest of the build.

4. Build the Wall

Stack Stones Strategically: Continue laying stones, staggering the joints between each row like bricks for strength and visual appeal.

Check Levels Constantly: Use a spirit level and string line to ensure the wall remains straight and level.

Fill Gaps: Use smaller stones or mortar to fill gaps and prevent shifting.

5. Reinforce Where Needed

For taller or load-bearing walls, consider adding reinforcement:

Metal Tiebacks or Geogrid: These provide additional structural support, especially on sloped terrain or retaining walls.

6. Cap and Finish the Wall

Install Coping Stones: Top the wall with flat, wide sandstone caps for a finished look and added weather protection.

Clean the Surface: Brush off excess mortar or use a damp cloth to clean the stone.

Optional Sealant: Apply a natural stone sealer to enhance durability and resist moisture and staining.

7. Backfill and Landscape

Backfill Carefully: Fill the space behind the wall with compacted soil or gravel to stabilise the structure.

Blend with Landscaping: Integrate the wall into your garden design with plants, mulch, or decorative features.

8. Ongoing Maintenance

Inspect Regularly: Check for loose stones or mortar cracks and repair promptly.

Keep it Clean: Periodically remove dirt, moss, or debris to maintain its appearance and structural integrity.

With careful construction and thoughtful maintenance, a sandstone wall offers lasting beauty and function—whether it's defining your garden space, retaining soil, or simply adding rustic elegance to your landscape.

Buy With Confidence

• Our walling can be purchased individually per piece.
• Please enter the number of pieces you need, selecting your preferred size. 
• All of our walling comes in crates which can be easily placed into a van or a garden using a hi-ab lorry.
• You can choose a free collection from one of our Depots or fuss-free, home delivery.

A Service You Can Rely On

• We also provide prompt and dependable deliveries nationwide.
• Stone Zone is a family-owned business that has been supplying landscaping materials since 1998
• Our friendly customer advisors can help you with any questions or your purchases.
• We pride ourselves on offering a large range of landscaping and gardening products

Sample walling pieces are available in-store, please ask a customer advisor.