Tri-State Stone and Building Supply Inc.

Tri-State Stone and Building Supply has been supplying Carderock® stone, building stone and building materials to the greater Washington DC Metropolitan area for over 90 years. Family owned and operated since its inception in 1926.

We carry an extensive inventory of hand selected building stone and building materials including flagstone, wallstone, decorative landscape stone, building stone, and veneers.

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We are the exclusive quarriers of Carderock® Stone.

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Tri-State Stone and Building Supply, Inc. | Carderock® Wall

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We are the exclusive quarriers of Carderock® Stone. This beautiful building stone is a mica-schist quartzite, with horizontal and vertical cleavage making it easy to work into numerous installation styles. The vibrant blues, browns, grays and greens create an aesthetically pleasing palette of colors for most any building stone project. The unique colors, durability and ease of use have made Carderock® Stone a favorite of architects, designers, stone masons and homeowners for generations.

Quarriers of Carderock® Stone

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Open from 7:30-4pm ! 8200 Seven Locks Road , Bethesda Maryland 20817
Come visit us at 8200 Seven Locks Road and shop these beautiful products ! #stone #buildingsupply #westernmaryland #quarry
We’ve got it all at Tri State ! #stone #landscaping #contractor
Just in ! Huge restock of 2 inch thermal treads 💯 These go fast & are a customer favorite so swing on down and grab yours while supplies lasts
Sunrise in Bethesda, MD.
We always stock most standard size and color Hanover Pavers ! Nicolock , techoblock and keystone are order only !#instock #pavers