Slate was discovered in the mid 1800’s on the eastern coast of Canada in Newfoundland, of Cambrian age, meaning it had been highly metamorphosed into a very hard and durable stone, and is therefore categorised as S1 slate. The geological properties of Canadian slate are identical to that of the slate extracted in Wales, which is also of the Cambrian age.
The Glendyne slate is produced in the town of Saint Marc du Lac Long, Quebec, Canada. Produced from deposits laid down 500 million years ago, these top quality slates are dark charcoal grey in colour with tones of blue. They have a fine textured surface with a smooth finish so are known for lying beautifully flat on a roof. Notorious for their exceptional quality the Glendyne slate has test certificates from France NF228, Belgium STS 43.03.6, ASTM C406-00 and BS ES 12326-2.