Black Slate Paving Slabs 800 x 400 x 20mm, these uber cool slabs will give you that premium slate look without breaking the bank. They are of course machined on the underside to create a very consistent 20mm (nominal) depth for super fast installation, these slabs have crisp sawn sides with a gently textured riven surface. Very premium and will be sure to transform any living space.

Sample service  

To order a small sample of this product please click here 

Full Crates vs Split Crates 

Full crates offer the best value as they are shipped directly from one of our distribution centres directly to your address. Split crates on the other hand require further shipping and handling before they can be delivered to our customers. Split crates do however offer a choice for customers who simply have no need for a full crate. Most products offer full crate and split crate options, please refer to individual product pages for further information.

Other sizes

This product is also available in the following sizes and in 20mm thickness format

• 600 x 300 
• 600 x 400
• 600 x 600
• 900 x 600  
• 4-Size Patio Pack

Video Review

In this video we highlight the actual 800 x 400 slabs so you can appreciate the overall size, texture, tone and quality of this premium paving slab.  

Please kindly read our checklist and delivery sections before ordering as it covers important information that customers will find helpful. If you have any questions, please get in touch with our team and we will be happy to assist you.

NB: Pictures and videos represent colour and texture - size may vary at times

Specifications

● Thickness 800 x 400 x 20mm calibrated thickness
(nominal)
● Full crate holds 50 slabs, covers 16.60m2 (assumes joint
of approx. 10mm)
● Install on a full bed of mortar (dot and dab not
recommended)
● Subtle riven surface imparting a chic and classy look
● Black to dark grey in tone and will look much darker in
the wet - overall the tonal variations are greater when
compared to the Grey slabs in our Brazilian slate range
● Suits modern and contemporary designs
● All slabs are sourced from Brazil, imported directly using
our own team - buy direct and save

This may need to be laid over a sub-base (strengthening layer) of crushed stone or hardcore.

We don’t prescribe a solution per se as contractors may alter these according to project needs but as a guide its typically installed on full bed of mortar sometimes referred to as individual bedding. The mortar bed is laid on top of compacted hard core (MOT) which can range from 100mm to 150mm on average.

Please always seek advice from a professional contractor as our notes are simply to serve as a general guide and are not project specific.