Our story
At the heart of natural stone.
Founded by Sophie Windeshausen, SOWIN stone continues the legacy of the Martelange schist quarry, where stone has been extracted and shaped for generations.
Each material is carefully selected to preserve its authenticity and showcase local craftsmanship. We offer a range of Belgian and European natural stones designed to create durable, aesthetic, and timeless outdoor spaces — from the raw quarry to your projects.
A know-how at the service of your outdoor projects
Edging, paving, or landscaping: our stones adapt to all uses, from gardens to professional projects.
A demanding selection of natural stone
We choose each stone for its quality, durability, and natural character, to ensure reliable and long-lasting materials.
Creations that stand the test of time
Slate brings a natural and timeless aesthetic that enhances every space, both outdoors and indoors.