Slate is a common terminology for rock which can be split into thin sheets. The majority of these “slates” are derived from volcanic ash, however, are not true slates in the strict geological sense. Most true slates are metamorphosed rock, often formerly mudstones.
The “slate” quarries of the UK can be found in Cornwall, the Lake District and North Wales. To compliment the slate portfolio, imports are commonly sourced from countries such as Spain, Brazil and China.
Slate is typically a very durable and hard wearing roofing material and rarely exhibits visible degradation, even when placed under extreme atmospheric conditions for many years.
There are various colours of slate available, the most common being blue, other colours include, plum, grey, green and charcoal.