richard gorse

I have made multiple purchases over the last couple of years from gravel master and have always found the company competitive in price and excellent in service and communication
21 June 2021

Dan Morrison

Very happy with my purchase. Good quality of stone and real easy to put down. The price for them was the best on the net. Delivery driver was very friendly to. Thanks very much :)
21 June 2021

Mrs GF Brown

I found the website to be the best on the internet for slate, easy to use, plenty of information and very clear. The prices were also very good. The delivery arrived on-time. I couldn't ask for more, thank you!
21 June 2021

mr peter day

Easy to order. Fast service, speedy divery. Would use again and recommend
22 June 2021


Easy to deal with. Great product. Excellent customer service, sorted out a minor glitch in minutes.
21 June 2021

w a hutton

excellent service well recommened
20 June 2021

Blue Slate 20mm

From £98.00 incl.VAT

Step 1 - Select your delivery postcode area (required)

Step 2 - Select the type you require

Bulk Bag
Approx 850Kg Bulk Bag



This decorative product is eco-friendly as it is recycled in the UK from the roofing slate industry. The use of slate in borders and planters as a mulch greatly reduces water evaporation whilst still maintaining permeability for plants and wildlife. The blue is bold and gives a real contemporary look which can help bring your garden to life. The flat angular shape of the slate gives a stylish modern look.

Blue Slate 20mm

Bag Size: Approx 850Kg Bulk Bags and 50x20kg Sealed bags
Size: 20mm (Based on width of stone)
Uses: Landscaping, Aquatics, Ponds, Water Features and Mulch
Colour: Blue
Shape: Flat Angular
Specification: BS EN 1260

Blue Slate 20mm Colour and Shape

The 20mm Blue Slate is a naturally quarried product which may result in slight variations in formation, size, colour or shape. In the daylight the stunning colour of the blue can really brighten up your garden. The size and flat angular shape of the slate makes it ideal for a variety of uses.

Availability on Blue Slate 20mm

We can usually accommodate a next day delivery service if the product is ordered before 1pm for an additional cost. The delivery is also subject to weather conditions and stock levels. All supplied in Bulk Bags (850KG) or Sealed bags (20KG).

Loose Load Deliveries

For a competitive loose load delivery price (bulk deliveries) for large areas please contact our sales team on 03300585068.

  • Loose load orders
    T:0330 058 5068
  • Delivery Lorry
  • Loose tipped 10, 20 and 30 tonnes