Blue Slate 20mm Blue Slate 20mm Blue Slate 20mm Blue Slate 20mm Blue Slate 20mm


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
13 October 2020

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 :)
06 October 2020

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!
05 October 2020

mr peter day

Easy to order. Fast service, speedy divery. Would use again and recommend
06 October 2020


Easy to deal with. Great product. Excellent customer service, sorted out a minor glitch in minutes.
10 October 2020

w a hutton

excellent service well recommened
07 October 2020

Blue Slate 20mm

From £95.00 incl.VAT

Step 1 - Select your delivery postcode area (required)

Step 2 - Select the type you require

Bulk Bag
Approx 850Kg Bulk Bag
50 x25kg Sealed Bags
50 x 20Kg Sealed Bags (1 Tonne)
1 Bag
Sample (Under 1Kg)



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
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. Normal delivery is 2-3 working days from when the order is placed. The delivery is also subject to weather conditions and stock levels. All supplied in Bulk Bags (850KG) or Sealed bags (20KG). We also supply a sample which is a small poly bag sent via first class post.

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