Best Kept Secret in Outdoor Design
By Ben Parrot - Landscape Gardener & Amateur Geologist
Classification:
Slate landscaping material and construction aggregate
Geological name(s):
Metamorphic rock
Other Name(s):
Rustic slate rockery stones, rustic slate chippings, rustic slate rocks, slate chippings, garden slate, Autumn slate chippings, Autumn rustic slate chippings
Overview
Welcome to the only encyclopaedia for decorative aggregates and landscaping materials. Rustic slate chippings, also known as Autumn slate, are a distinguishing and durable landscaping choice, with their unique blend of beige, copper, charcoal grey and black colours bringing a natural, earthy charm that adds character and depth to any space.
Rustic slate has become popularised by its use in paving, the larger, rustic slate rockery stones have become popular in rockeries. Although less common, rustic slate chippings may also be obtained and used for a unique ground cover that will be the envy of the neighbourhood.
This encyclopaedia entry offers comprehensive information about the key specifications, advantages, and multifaceted uses of rustic slate chippings as a landscaping and construction aggregate. Alongside technical details, the page links to resources on design fundamentals, inspiring ideas, similar alternatives to rustic slate as well as practical 'how to' guides for DIY projects using slate chippings.
Rustic Slate Chippings' Specifications
material | colour | shape | sizes | fall safety | price |
|---|---|---|---|---|---|
Slate | 15-40mm |
durability | fish friendly | eco friendly | degradability | ph | diy friendly |
|---|---|---|---|---|---|
Non-degradable | Neutral |
Material
Slate
Colour
Blue to green with orange and rusty colour tones
Shape
Flat
Size Range
15-40mm (0.6-1.6")
25mm rustic slate, rustic slate stone chipping 15mm - 30mm
Fall Safety
Unsuitable for play surfaces
Price
Economical
Durability
High
Fish Friendly
Yes
Eco-friendly
Recycled
Degradability
Non-degradable
pH
Neutral
DIY-Friendly
Yes
Benefits
Decorative aggregates like rustic slate offer a multitude of benefits for garden and landscaping design. These materials are not only visually but also functional. They provide excellent drainage, require minimal maintenance and can help in weed suppression. Their versatility allows for varied design aesthetics, from rustic charm to contemporary elegance.
Rustic slate enhances the landscape with its natural, earthy appearance. Its unique rustic orange and contemporary blue-grey tones blend stylishly with a range of garden themes. Additionally, its angular edges and flat surfaces make it ideal for creating stable pathways and raised beds.
Applications
Rustic slate chippings are a versatile decorative aggregate suited to various landscaping applications. They are ideal for creating stunning features, like natural-looking pathways, rustic water features and decorative borders, adding depth and contrast to any garden design. Its unique colour palette and texture make it a favoured choice for building rustic slate rockeries or complementing a plum slate rockery design as well as water features such as ponds.
To complement the natural beauty of rustic slate, consider pairing it with colours that enhance its rich, earthy tones. Soft green plants or foliage can bring a fresh dynamic to the slate's surface, while accents in warm gold or yellow create a striking contrast that highlights its deeper hues.
In the following section, we list many common rustic slate chippings uses, although it is not exhaustive. Wherever there is a hyperlink beside an item, an article from Outdoor Aggregates about the topic is available.
Inspiration and Informational Articles
DIY-Friendly How-To Guides
Other Applications
Some other excellent applications for rustic slate chippings include:
Unsuitable For
The following list represents the kinds of applications that rustic slate chippings are not suitable for:
- 1Rustic slate chippings are unsuitable for french drains
- 2Slate mini mulch is not suitable for driveways
- 3Play surfaces
Similar Alternatives to Rustic Slate Chippings
The following is a list of decorative aggregates which are alternatives to rustic slate chippings. They may offer you a more suitable variation on the primary colour, a more economical option, or a close substitute for cases where the base material may be unsuitable for the project you are creating, e.g. limestone is not fish-friendly, where slate is.
Name | Colours | Material | Size | Shape | Availability | Price |
|---|---|---|---|---|---|---|
purple-grey | 10-30mm (0.4-1.2") | flaky, flat | UK, USA, EU | |||
grey | 10-40mm (0.4-1.6") | flaky, flat | UK, USA, EU | |||
blue | Marble | 10-20mm (0.4-0.8") | angular | UK, USA, EU | ||
grey, black | Basalt | 10-20mm (0.4-0.8") | angular | UK, USA, EU | ||
blue | granite | 10-20mm (0.4-0.8") | angular | UK, USA, EU |
Under £80
£80-£120
£120-£150
£150-£200
£200-£300
£300+
Maintenance
Maintaining an area with rustic slate chippings is quite easy if you install a heavy duty membrane underneath to prevent weed growth. The only necessary work involves raking and occasionally removing debris. It is recommended to perform power washing periodically to maintain the original color and prevent the buildup of algae or moss. Quarry materials are natural and may have dust, so they should be hosed off with water during the installation process.
For areas with heavy footfall, such as paths or footpaths, replenishment of chippings may be required over time to maintain depth and coverage. For more on how to clean slate chippings, read our article: how to clean garden stones.
Purchasing Tips
When purchasing rustic slate chippings, consider the size and bulk bag quantity necessary for your project. Where available, it is cost-effective to request a sample to assess the stone's colour and quality against your design requirements. Also, consider the size you'll need; for instance, rustic slate chippings 20mm or larger are typically used for driveways, while smaller 10-20mm chippings are better suited to footpaths.
Using our gravel calculator to get an unbiased estimate for your project needs is one of the best and easiest ways to get the right amount without the risk of shortfalls or over-spending - all you need is a few measurements of the space. Ordering in bulk bags is often more cost-effective than smaller quantities. Also, always ensure you consider the delivery aspects, especially the vehicle access to the site.
FAQs
What is rustic slate?
Rustic slate is a natural, metamorphic rock known for its layered structure and unique rustic orange and grey tones, widely used in landscaping and garden design. The flat surfaces and angular edges make it ideal for rockeries, but it is also suitable for raised beds, walling, gabion baskets and water features.
Is slate shiny or dull?
Slate typically has a matte finish, appearing more dull than shiny, particularly when dry. Its appearance can vary when wet, often enhancing its natural colour.
Does slate absorb water?
Slate is relatively water-resistant and does not absorb much water, making it suitable for outdoor use in gardens and as part of water features.
How deep should you lay slate chippings?
Slate chippings should be laid at a depth of about 50mm (2 inches). This depth is sufficient for most purposes like mulching borders, creating pathways, or as ground cover, ensuring effective weed suppression and a neat appearance.
Do I need membrane under slate chippings?
A weed control fabric or membrane under slate chippings is recommended, especially for pathways, driveways, and borders. This membrane helps prevent weed growth and ensures the chippings remain clean and in place, reducing maintenance efforts.
