Please see the full listing section below for comprehensive specifications, benefits and uses for Grano Dust — as well as links to inspirational garden ideas and do-it-yourself guides.
Grano Dust
Price range: £115.00 through £148.00 inc. VAT
Grano dust, also known as green granite dust, is a finely crushed granite aggregate (0-4mm) that delivers a smooth, hard-wearing finish for practical landscaping jobs. Its neutral grey tones blend naturally into outdoor settings, compacting tightly for excellent stability and a level surface that improves with compaction. Perfect for:
- stable bases under artificial grass
- bedding layers for patios and paving slabs
- sub-bases for block paving and pathways
- mixing fine mortars or concrete screeds
- establishing durable hardstandings
This versatile material offers superior compaction, reliable drainage, and long-lasting durability while keeping weeds at bay beneath surfaces. A smart, no-nonsense choice for building solid foundations in your garden or construction projects.
Gravel Calculator
You need ≈ 640 kgs
(0.4 m³)
Note: No compaction/settlement included.
Add 10-20% extra for compaction & wastage if required.
Add 10-20% extra for compaction & wastage if required.
| Size | 0-4mm |
|---|---|
| Quantity | 20 x 20kg Mini Bags, 40 x 20kg Mini Bags, 850kg Bulk Bag |
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Specifications, Inspirational Ideas & DIY Guides
Jump Links
Specifications, Why Professionals & Homeowners Choose, Applications, Inspirational Ideas, DIY Guides, Maintenance, Purchasing Tips, FAQs, Related Products
Overview
After years of installing everything from patios in rainy Sussex to artificial lawns in suburban Hampshire, I keep coming back to grano dust for specialist, low-maintenance features or critical foundation layers. Also known as granite fines, stone dust or fine granite, our product is a crushed green granite dust, screened down to 0-4mm. It compacts down beautifully to a firm, smooth finish that stays put even through our wettest winters. Whether you're prepping for artificial grass or bedding slabs, let's look at why it performs so well before you decide on your purchase.
Specifications
Why Professionals & Homeowners Choose Grano Dust
What sets our 0-4mm green granite fines product apart is how tightly it compacts when wetted and whacked down, turning from loose powder into a rock-hard, stable layer that resists shifting indefinitely. From dozens of installations, here are the standout results:
- Base or bedding layers - Provides a stable, level, well-compacting, and permeable foundation for synthetic lawns.
- Superior sub-base - The 0-4mm grading delivers excellent load-bearing stability without large stones poking through, making it ideal for sub-bases and for smooth, low-maintenance traffic applications in level settings.
- Excellent drainage - Fines allow water to percolate while maintaining firmness; perfect for those clay-heavy gardens.
- Blends seamlessly - The natural green-grey hue softens transitions around artificial turf borders - no ugly grey patches yell "construction fill".
- Weed suppression - When topped with membrane, it blocks regrowth far better than sand.
Here are some examples from previous installations:
Applications
This angular yet fine granite dust excels wherever you need a tightly compacted, level foundation rather than a loose decorative top layer. Its subtle green-grey tones blend naturally rather than clashing. If using as an exposed path or base, its muted colour pairs well with modern planting schemes - think hardy Geranium 'Rozanne', low-growing Sedum 'Autumn Joy' for late-season flowers, structural Festuca glauca grasses for texture, and evergreen Hebe 'Youngii' for year-round structure against the subtle tones. It is not suited to decorative mulching or loose top-dressing where larger aggregates provide better stability, drainage and foot comfort.
- Artificial Grass Bases - As a screed bed layer; it compacts to a level that prevents dips and extends turf lifespan.
- Paving & Patio Sub-Bases - Creates a solid, non-shifting bed under slabs or blocks; use it after MOT Type 1 for extra stability on clay soils.
- Path & Border Foundations - Perfect for capping rougher sub-bases before topping with decorative chippings.
- Driveway Preparations - this fine granite dust can be used to fine-tune levels and fill voids in sub-bases; essential for preventing settlement under block paving in high-traffic.
- Levelling Slopes & Uneven Ground - The pliable nature makes it easy to screed smooth on gradients.
- Mortar & Screed Mixing - Blend with cement for fine floor screeds for a durable, crack-resistant finish in outbuildings.
Inspirational Ideas
Compare the specifications of our top quality self-binding gravel products to find the optimal one for your needs.
Ben Parrot
This is the foundation of every path, driveway and patio I've ever laid.
Ben Parrot
DIY Guides
Where the money under a driveway actually goes and which surface suits which house.
Ben Parrot
Our calculator estimates your needs, in bulk bags and accounts for compaction in the answer.
Ben Parrot
Thin gravel on a firm base over deep gravel always. How I build one that looks new after ten years.
Ben Parrot
Maintenance
Once compacted properly (dampen lightly, then plate-whacker in passes), grano dust needs almost no upkeep. Sweep off occasional debris, and if any minor settlement appears after heavy use, simply add a thin top-up layer and re-compact.
Purchasing Tips
Measure your area accurately in square metres, aim for 40–60mm compacted depth depending on load (deeper for driveways), and factor in 10–15% extra for compaction loss.
FAQs
What size is grano dust available in?
Outdoor Aggregates offer grano dust solely in the versatile 0-4mm grading, which compacts tightly for stable sub-bases, artificial grass bedding and paving preparations across construction and landscaping projects.
Is grano dust suitable under artificial grass?
Yes, grano dust's 0-4mm green granite fines screed to a perfectly level, firm surface that drains well and prevents artificial grass movement.
Can I use grano dust as a final path or driveway surface?
You can use grano dust as a surface, although it's not suited as a loose decorative topping or standalone walking surface. Its fine texture compacts too densely for vehicle grip and can wear without a larger aggregate layer on top.
Is grano dust safe around plants and water features?
Yes, grano dust is pH-neutral and non-toxic to perennials or aquatic life when used as a base below liners or membranes, making it suited for edging near ponds.
How much grano dust do I need for my project?
Calculate your area in m² and aim for 40–60mm compacted depth (about 80–120kg per m²). Always add 10–15% extra for settling and compaction - use our sub-base calculator for precise estimates on your grano dust order.
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