Spanish slate

For those who are interested in Spanish slate, we recommend a slate from Cupa, in northern Spain. They have an extensive production of slate, and supply slate for 25% (=164,000 tons) of all slate roofs laid today. This makes them the world's largest producer of roof slate. Every shingle manufactured undergoes a consistent control according to the official ISO-standard 9001:2000, which guarantees that the products are systematically tested.

The slate that is best suited for the Scandinavian climate is of a rough kind. It looks similar to the slate from Grythyttan, and is relatively dark. It is delivered with a 30 year warranty on the material, and it is tested to not be vulnerable to ice wedging.