atlantic slate


stone image | specifications | finishes | applications | projects
Atlantic Slate is used for interior and exterior applications. Because of its excellent properties and performance, unique dark gray/green color and rich texture, architects specify this natural slate for interior slate flooring, exterior paving stone and roofing. Atlantic Slate is available in natural cleft, honed and cascade finishes.

stone type



Gray with a slight green tonality and reflective quality.

weathering characteristic

“Unfading”, meaning it will hold its basic color even after many years of exterior use.


Relatively even cleft, exceptionally strong and hard, durable, dense, low absorption rate and resistant to freeze-thaw cycles. Slip-, stain- and heat-resistant. No detrimental effects on the environment.


interior, exterior


Depending on the application, an impregnating sealer may be required. Contact us for information regarding the use of sealers, impregnators, oiling, cleaning, etc.


upon request

ASTM results

upon request


stone image | specifications | finishes | applications | projects

Finishes Descriptions

Natural Cleft - a textured, natural finish, both visually and to the touch. Achieved by splitting the stone along its cleave with a hammer and chisel.

Honed - an extremely smooth, eggshell finish. Achieved with the use of fine diamonds.

Cascade - a fairly flat, uniform finish with subtle ripples and soft texture. Lighter gray in color.

Roofing - generally natural cleft both faces with trimmed edges. slate roofing finish