The raw material of ARDÓSIA NACIONAL is traditionally known for its high degree of hardness, 8.5 on the Moh’s scale, in addition to providing plates greater than 2.50 m in length.

This slate is a special type that does not allow opening plates less than 2 cm thick, being ideal for landscaping, floors, steps, table tops, thresholds, benches, partitions, billiard tops, among other things, due to its high degree of hardness and resistance.

Quarries of slate Matacão.

Plates larger than 2.50 m in length.