infoNon-returnableThis product is non-returnable. Once delivered, it cannot be returned under any circumstances. Your statutory rights are not affected.
Volume to fill
Please Note: Colour may vary as this is a natural product.
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Split your purchase of £109.99 into 4 with no sign-up fees or late fees. Your purchase will be split into 4 payments, payable every 2 weeks
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Key Features
{{grass}} Angular chippings provide effective weed prevention
{{opacity}} Aids moisture retention in soil
{{fitness_center}} Durable slate, known for its minimal maintenance needs
{{visibility}} Stunning focal point in any garden
Technical Specification
Technical Specification
URN:
6001023
Product:
Blue Slate
Application:
Pathways, Borders, Landscaping
Material Type:
Slate
Size:
Bulk Bag
Diameter:
20mm
Weight:
800kg
Sales Unit:
Bag
Moisture Resistant:
Yes
Density:
1600kg/m3
Colour:
Blue
Status:
Non-Returnable
Product Overview
20mm blue slate chippings produced from natural slate quarries in Wales.
Crushed and carefully screened to a nominal 20mm size, these chippings have a flat, angular profile that allows each piece to interlock when laid. This natural “locking” action creates a firm, stable surface that resists shifting underfoot, unlike rounded aggregates which tend to move or roll.
Their structure also maintains excellent drainage, preventing surface water from pooling. This makes them highly practical for garden paths, driveways, beds, and borders, as well as for decorative ground cover where both function and appearance matter.
Blue slate offers a shifting spectrum of cool tones, from light grey-blues through to deeper blue shades with occasional green or metallic accents.
In dry conditions the surface appears muted and subtle, but once wet it transforms into a rich, dark blue-grey. This contrast adds movement and seasonal interest, making it a versatile choice for year-round landscaping.
Beyond appearance, the slate is permeable, helping water drain through easily; durable, resisting frost and heavy rain; and low maintenance, needing only occasional raking or top-ups. Unlike organic mulches, it does not rot or decompose, ensuring a long-lasting surface.
Features & Benefits
Cool blue-grey colouring: Delivers a clean, contemporary finish, distinct from the warmer plum tones.
Natural colour variation: Flecks of green or metallic sheen add texture and visual interest.
Flat slate shape: Provides a smoother finish underfoot, particularly suitable for pathways and walkways.
Free-draining aggregate: Supports natural drainage and reduces the risk of surface water pooling.
Durable natural stone: Withstands weather cycles, including frost and heavy rainfall, without breaking down.
Weed suppression with membrane: Reduces regrowth when used with a permeable geotextile fabric.
Low-maintenance surface: Requires only periodic raking and occasional top-ups to retain appearance.
20mm nominal size: Angular particles interlock for greater surface stability than rounded gravel.
Cost-effective in bulk: Bulk bags reduce cost per m² compared with smaller pack sizes.
Applications
Garden borders and mulching: Decorative cover that suppresses weeds, conserves moisture, and insulates roots.
Paths and walkways: Stable, free-draining surface for light foot traffic in gardens and landscaped areas.
Rockeries and alpine gardens: Complements stone features and provides free-draining cover suitable for alpine planting.
Water features and ponds: Enhances edges and surrounds with colour variation (wash before placing near water).
Installation Guidance
Prepare and level the base: Remove vegetation, stones, and debris, firming the ground to reduce later sinking.
Install edging restraints: Use boards, metal strips, or kerbs to prevent migration and keep paths neat.
Lay permeable weed membrane: Blocks light to minimise weed growth while allowing water to drain freely.
Compliance & Performance
Material specification: Crushed Welsh slate, angular in form, 20mm nominal size, with natural colour variation.
Performance characteristics: Permeable aggregate resistant to frost and rain, suitable for decorative landscaping applications.
Delivery & Returns Information
Delivery charges vary by product category and order value. Items may ship from different suppliers and arrive separately, so delivery charges can be shown per part of your order at checkout.
Standard (Nationwide) Delivery
Core Products
Core
ORDER VALUE
DELIVERY CHARGE
Under £250
ex. VAT
£25
ex. VAT
Over £250
ex. VAT
FREE
Core Delivery is our most competitive delivery fee. To qualify for Core Delivery, all the products in your basket need to be from our Core range. Core products have the Core icon next to their picture.
Timber & Sheet, Building Materials, Joinery and Gardens & Landscaping Products
ORDER VALUE
DELIVERY CHARGE
Under
£300
£30
ex. VAT
Over
£300
ex. VAT
FREE
Express Delivery
Express Delivery - Insulation and Plasterboard & Drylining
ORDER VALUE
DELIVERY CHARGE
Under
£400
£90
ex. VAT
Over
£400
ex. VAT
£55
ex. VAT
Express Delivery - Timber & Sheet, Building Materials, Joinery and Gardens & Landscaping Products
We work with a nationwide network of trusted suppliers. Items in your basket may be supplied by different suppliers and delivered separately. Where this applies, you will see delivery charges shown at checkout for each part of your order. We always aim to group products from the same supplier to keep delivery costs as low as possible.
Delivery areas
Delivery charges apply to mainland UK, excluding: AB, CA, CF, DD, DG, EH, EX, FK, KA, KW, KY, IV, LA, LD, LL, ML, NP, PA, PH, PL, SA, SY, TR, TQ and TD.
If your address is in one of these areas, we will contact you before processing your order to confirm any additional costs. We do not currently offer delivery outside the UK mainland.
What to expect on delivery day
Deliveries are typically kerbside.
Please ensure someone is on-site to accept delivery. For heavier items, help with offloading may be required.
Many building materials arrive on large vehicles. If access is restricted, a specialist vehicle such as a HIAB may be required and could incur an additional charge.
Why delivery can cost more than typical parcel delivery
Building materials often travel on larger vehicles and usually carry fewer drops per run than parcel networks. That is why delivery charges can be higher than standard e-commerce shipping.
Returns
Returns depend on what you have bought and whether there is anything wrong with it. For full details on eligibility, timeframes, and exclusions, please see our full policy.
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