Western Slate, Inc. began in 1991 with the manufacturing of roofing slate.  The roofing operation is located  in Poultney, Vermont.

In 2004 Western Slate diversified into various landscape stone products through their subsidiary WSI Landscape Stone, which is located in Granville, New York.  


WSI Landscape Stone built a new plant and now manufactures crushed slate in a variety of sizes and colors to suit their customers needs.

In 2017 WSI Landscape Stone expanded their operation to include and infield diamond sand.

WSI Landscape Stone also offers a variety of delivery and pick-up options.


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