Roofing Slate

Honister’s Westmorland roofing slate is one of the most prestigious products in the building industry.

It has appeared on significant buildings such as Buckingham Palace, New Scotland Yard, RAF Cranwell in Lincolnshire, and many other landmark properties.  It can be found on schools in the Scottish capital of Edinburgh, to rural churches in Devon as well as many Lake District hotels and businesses.

Its quality and durability adds real value to your property and means that unlike many cheaper alternatives, it does not require replacing every 30 years. So convinced are we of its longevity – it comes with a 300 year guarantee.

roofing slate
roofing slate
roofing slate
roofing slate

Westmoorland Slate – Technical Features

  • Tests show it has a density of 2748kg/m3
  • Highly resistant to abrasion
  • Compressed strength, flexural strength and modulus of elasticity
  • Non-combustible
  • Highly resistant to the elements. In terms of rain, it has very low water absorption. It is hard-wearing which defends it against pollution and common chemicals.
  • Does not rot or allow mosses and lichens to flourish
  • The thermal conductivity of this roofing slate has been found to be approximately “2.0 W/mK; it is dimensionally stable, with a thermal coefficient of expansion of 10.4 x 10.6
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