Specialists in Reproduction Conservation Roofing

Random Diminishing
Conservation Slate

NEW Product for 2018

Greys Artstone Random Diminishing Conservation Slate is a cost effective alternative to natural slate producing a crafted authentic diminishing roofscape. Available in four colours: New Quarried Westmorland Green, Aged Westmorland Green, New Quarried Welsh Blue/Grey and New Quarried Welsh Heather/Purple.

greys artstone random diminishing slate home

Our range of Random Diminishing Conservation slate is manufactured to the same exacting standards as our standard slate product.

Each individual slate is hand crafted using moulds taken from slate originals. The fine edge detail and textured surface combines with realistic colouration to create an attractive alternative to natural slate.

Greys Artstone roofing slates have been designed in consultation with professional roofers and architects, to achieve an easy to lay and uniform slating format.


  • NO sorting or grading
  • Designed to diminish - Batten schedule provided
  • Weight 30kgm2
  • Indented to facilitate either 75mm
  • Construction allows easy cutting without cracking or breaking
  • Coloured through product
  • Weathers like slate not concrete
  • 25 Year Guarantee
  • FREE Samples Available
  • Manufactured to BSi Standards

Available Colours and Sizes

greys artstone random diminishing slate colours

greys artstone random diminishing slate sizes

Weight 30kgm2

The light weight construction of our slates saves on labour and timber costs, approximately 33% with our slate products.


Our slates are constructed from Glassfibre Reinforced Concrete (GRC). Construction allows easy cutting without cracking or breaking. Our slates weather like natural slate not concrete, unlike aggregate based concrete products that can show aggregate through their surface due to weathering over time.

In a recent document The International Glassfibre Reinforced Concrete Association recommend that for good quality GRC, ductile lifetimes of at least 60-80 years can be confidently expected in UK weather conditions (Source: www.grca.org.uk).

Download GRCA information, British Standards Testing and Data Sheets. Here

Our standards speak for themselves

Our roofing products conform to the following BSi Standards ensuring maximum performance in the toughest conditions.

  • Fixings - to BS 5534:2003
  • Durability - to BS 7543:2003
  • Colour - to BS 1014
  • None combustible - to BS 476 P.T.4
  • Freeze / Thaw - to BS EN 492:2012
  • Strength - better than BS EN 492:2012
  • Permeability - to BS EN 492:2012

Our products are guaranteed

We’re confident our product is durable enough and manufactured to the highest of standards that we give a 25 year manufacturer guarantee.

Roof Pitch: Head Lap Specification

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Contact Details

Greys Artstone Limited
Burdwell Works
New Mill Road
West Yorkshire
This email address is being protected from spambots. You need JavaScript enabled to view it.
Telephone: +44(0)1484 666400
Fax: +44(0)1484 662709

General Information

FREE Site Survey
FREE Estimates
FREE Batten Layouts

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