Rockmate
River Rock 20mm - 40mm Decorative
River Rock 20mm - 40mm Decorative
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River Rock 20MM – 40MM Decorative Gravel: Natural, Smooth, and Full of Character
What It Is
River Rock 20MM – 40MM Decorative Gravel is a naturally rounded stone blend that delivers a relaxed, organic finish. The mixed sizing creates texture and depth, making it ideal for landscapes that call for a softer, more natural look.
What It’s Made Of
Formed naturally through water movement, these stones are smooth and rounded with no sharp edges. The 20MM to 40MM sizing variation adds visual interest and a more layered appearance once installed.
What It’s For
River Rock 20MM – 40MM Decorative Gravel is well suited to projects where texture and natural tones are the focus:
Garden Beds: Adds a soft, organic feel around plants and shrubs.
Feature Areas: Creates depth and movement in larger landscape spaces.
Drainage Zones: Allows water to flow freely between stones.
Around Stepping Stones: Complements pavers and natural stone pathways.
Coastal and Natural Designs: Perfect for relaxed, earthy outdoor spaces.
How to Use It
Spread evenly over a prepared and level base to a recommended depth of 75 to 100mm depending on application. Because of its rounded shape, edging is recommended to help contain movement. For improved weed control and long term performance, consider installing geotextile fabric underneath.
Features and Benefits
Mixed 20MM – 40MM Size: Creates texture and visual variation.
Smooth Rounded Finish: Soft underfoot with a natural river look.
Excellent Drainage: Ideal for areas where water flow is important.
Durable and Long Lasting: Performs well in Australian conditions.
Low Maintenance: Does not decompose or require frequent topping up.
Bulk Supply Available: Sold by the cubic metre for projects of any size.
Coverage Example
At a depth of approximately 75mm, 1 cubic metre will cover around 13 square metres depending on ground preparation and placement.
Practical Notes
Natural Variation: Colour, size, and tone may vary as this is a natural product.
Stone Movement: Rounded stones may shift more than crushed gravel, so proper edging is recommended.
Site Preparation: Proper levelling and compaction will improve stability and finish.
Delivery and Pickup Options
Bring Your Trailer or Ute: Visit us and we’ll load your gravel on site.
Delivery Across South East Queensland: We offer convenient delivery straight to your location. Freight location and rates are displayed at checkout for full transparency.
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Finally! Stone perfect for my space!
Transform any outdoor space instantly with our range of decorative rocks. From modern whites to bold charcoal tones, these stones add texture, contrast, and a polished finish to garden beds, pathways, and feature areas. Available in bulk and ready for delivery across South East Queensland.
Frequently Asked Questions
What can decorative stone be used for?
Decorative stone is ideal for garden beds, pathways, feature areas, borders, drainage zones, and modern landscaping designs. It adds texture, contrast, and long lasting visual impact to both residential and commercial projects.
How much decorative stone do I need?
The amount required depends on the length, width, and depth of the area you are covering. A common depth for decorative stone is around 75–100mm, depending on the look and application. If you are unsure, our team can help you calculate the correct cubic metre volume before ordering.
Is decorative stone low maintenance?
Yes. Decorative stone is a low maintenance landscaping solution. Once installed properly with suitable edging and weed matting if required, it provides long term coverage without needing frequent topping up like organic mulches.
Will the colour fade over time?
Natural stone retains its colour well in Australian conditions. Some surface dust may wash off after installation, but the core stone colour remains consistent over time.
Do I need to prepare the area before installing stone?
Proper preparation is important. We recommend clearing the area of weeds, levelling the ground, and compacting the base where required. Installing edging helps keep the stone contained and maintain a clean finish.
Do you supply decorative stone in bulk?
Yes. Our decorative stone is sold by the cubic metre and supplied in bulk. This makes it suitable for both small garden upgrades and large scale landscaping projects.
What access is required for delivery?
Delivery requires clear and safe access for our trucks to tip the material on site. Please ensure there is adequate space and no overhead obstructions. If access is restricted, contact us before ordering to discuss options.
If you still have questions please give us a call at 1300 136 895 and our team are happy to help
Trade Priority Promise
At Rockmate, we understand how important timely deliveries are, so we always keep our trade customers as our highest priority.
If you're tired of late deliveries causing your team to stand around with nothing to do, come and give us a go.
We guarantee to deliver your materials within half an hour of the promised time, or your next delivery is free. We want to earn your business, so give us a shot. We'll treat you as our highest priority and ensure your materials arrive on time, every time.