More About Vermont Slates

The most common and commercially important colors produced in the Vermont region are the following according to the NSA (National Slate Association):

• SEMI-WEATHERING GRAY/GREEN – also known as Sea Green, a green or gray/green color when first quarried; after application to the roof and exposure to the elements, a percentage of these slates weather.
• SEMI-WEATHERING VERMONT GRAY – a traditional slate-gray color ranging from a clear appearance to having small black markings.
• VARIEGATED PURPLE – a purple slate varying in shade. Some pieces are clear while some pieces have green spots and marks.
• UNFADING MOTTLED GREEN AND PURPLE – green and purple combine to form unique patterns in each slate.
• UNFADING GREEN – this slate exhibits shades ranging from a bright green to gray/green tones that will not weather.
• UNFADING GRAY – a medium-texture slate, usually with black markings.
• UNFADING PURPLE – a deep purple slate, at times almost burgundy in color, which may have occasional green marks or inclusions.
• STRATA GRAY – a medium gray slate with black stripes also known as Mottled Gray/Black.
• VERMONT BLACK AND SEMI-WEATHERING GRAY/BLACK – slate with a medium to dark gray color and darker linear markings to a medium-texture dark gray to black slate without lines.
• UNFADING RED – a bright red that will not change color, making it more durable and vibrant over time.