Vt Slate Company

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Vt Slate Company Rating: 4,6/5 1846 votes

Greenstone Slate® Company is a third generation Hill family business with quarries and facilities operating in Vermont and New York State. Most of these quarries share a similar history since slate mining was a cottage industry for local construction from the Colonial Era until after the Civil War.

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  2. Vermont Structural Slate Company® was founded in 1859 and incorporated on November 14, 1866 by an act of the Vermont legislature. The Company started with a small quarry and modest production facility in Fair Haven, Vermont.
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Vt Slate Company
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 About Greenstone Slate CompanyOur quarries in Vermont have, for over a century, produced an exceptionally fine quality stone for roofing slate. High quality stone is just the beginning, however. Our stone is worked only by Greenstone trained craftsmen. Our production facilities are constantly updated and expanded. This has lead Greenstone Slate to become a principal producer of colored slate roofing. We deliver consistently high quality product, with excellence in service and installation support, and competitive, direct pricing' for the highest value possible in a slate roof.Greenstone Slate Company is a third generation Hill family business with quarries and facilities operating in Vermont and New York State. Most of these quarries share a similar history since slate mining was a cottage industry for local construction from the Colonial Era until after the Civil War. Until the advent of a viable railroad system, roofing slate production was extremely limited due to the difficulty of transporting heavy stone to eastern cities. After the Civil War the railroad line from New York City to Albany was upgraded and extended into the slate-producing regions of Vermont. Greenstone's present Poultney, Vermont quarries were divided into several leases ; the largest of which was conveyed to the 'Auld and Conger Slate Company, ' a Welsh business around 1882. Production from the leases increased steadily for the next thirty years and reached its peak around 1915 when the Poultney quarries produced 20, 000-30, 000 squares of roofing slate per year with a work force of several hundred employees.The Great Depression of 1929 decimated the entire slate industry and the few surviving quarries were extremely small operations with a handful of employees ; usually family members. World War Two dealt a further blow to the industry as slate production was considered non-essential and the local workforce either entered the military or worked at the large defense plants located in metropolitan areas.After World War II, the first quarry to be re-opened on the Greenstone property was known as the 'Culver Slate Company It was a very small operation with three or four employees located on a small lease of Greenstone's present sea green vein in Poultney. The property had been part of what was known as the Nathaniel Griffith Lease, and in 1955 Ernest I. Hill began production. The quarry, and the equipment located there, had been neglected by years of little use or maintenance. Two of the large veins had been covered with rubble by Depression era cost cutting efforts, and it took more than a year to remove the debris and expose the high quality slate hidden below. By 1962, all of the Poultney quarry leases had been acquired by Mr. Hill and in 1971, additional quarries containing stone reserves were acquired from the town of Wells, Vermont. Ernest Hill continued his operation of the quarries as a proprietorship until 1980 when the company was incorporated as 'Quarry Slate Industries, ' and later re-named the 'Greenstone Slate Company.'In 1985, after Ernest Hill announced his retirement, his son Richard Hill took over of the entire manufacturing operation. His insight and similar visions of growth for Greenstone became the catalyst for even further expansion. Under his management Greenstone Slate Company acquired the Penrhyn Hill quarries in nearby Middle Granville, New York. Recently, in keeping with family tradition and commitment to the future of Greenstone's position within the industry, the company has acquired the Briar Hill Quarries. This tremendous acquisition, under the direction of Ernest Hill's grandson Jonathan Hill, consists of over 225 acres of enormous mineral reserves. The Echo, Bull Moose, Owens and the Big Boston quarries have historically produced vast quantities of Vermont Sea Green and Vermont Gray Black.The Briar Hill Quarry has significantly enhanced Greenstone's production capabilities. One of the most outstanding aspect
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Camara Slate produces the finest roofing slate available.

Applications:

Slate has been used for centuries to create beautiful roofs, renowned for resisting the assaults of rain, wind, and snow. With unique textures, soft colors and unmatched durability, it is the perfect marriage of practicality and beauty, enhancing any environment.

Camara Slate quarries and fabricates roofing slate that is ASTM Grade S-1 quality ensuring durability and structural performance for a lifetime. Slate is a natural product and like fingerprints, no two pieces are exactly alike… slight variations will occur in texture, thickness and shading. The combination of excellent appearance and performance has made Camara Slate a national leader for many roofing projects in the US and abroad.

Beauty:

The subtle textures and distinctive colors of Camara’s roofing slate will provide the crowning touch to any architectural design. One of the appealing characteristics of slate is the wide variety of natural colors. Roofing slate is classified in three different groups: “unfading”, “semi-weathering” and “weathering” to indicate the degree of color change that can be expected. Unfading means that over time the slate will have essentially no weather tones. The slate might lighten or deepen in color and may have varying tones produced during prolonged exposure to the elements. Semi-weathering slate will change 10% to 25%, whereas weathering slate will change 30% or more. This weathering continues to some degree throughout the life of the slate but does not diminish the longevity of the material. The Camara company offers a full compliment of creative choices that will provide your roof with an enduring beauty that cannot be matched by man-made alternatives. Aesthetically a step above!

Colors:

Unfading Mottled Green and Purple
Green and purple combine to form unique patterns in each slate. Some roofing slates are mostly purple, while in others the green predominates. No two slates are exactly alike. Produced in Vermont.
Semi-Weathering Sea-Green
One of the most durable and plentiful of the Vermont slates. A pleasurable material to work for the slate craftsmen- cuttable and consistent. This stone is gray/green when freshly quarried and a naturally harmonious blend of greens, grays, and browns after weathering. Produced in Vermont.
Vermont Gray
Our Vermont Gray weathers uniformly. The natural battleship gray assumes a light bronze patina over time that deepens the color but maintains a gray roof. Rugged, durable and medium texture, Vermont Grey is the traditional “slate gray” stone roof. Occasional pieces may show buff and brown tones. Produced in Vermont.
Unfading Red
The one and only, true Unfading red carries a price tag that reflects the limited deposits and difficult production of this exotic and extremely hard material. Brick red in color and one of the most durable slates known. Produced in Washington County, New York.
Slate
Unfading Green
Shades of green and gray/green that will not change in color. Some deposits are a very bright green, while others range gray/green. Produced in Vermont.
Royal Purple
A beautiful, nearly clear, Dark Purple Slate. Some pieces may have small markings of Green, but are predominantly Purple. Some weathering to buffs can occur. Produced in Vermont
Unfading Gray
A light Gray-Green Slate with some clouded grayer/black markings. Produced in Vermont.
Vermont Mottled-Gray Black
Grayish background with mottlings of various shades of darker gray-black. Some weathering can occur.
Unfading Clear Black
A smooth textured, clear black slate.

Durability:

Slate Burlington Vermont

Camara roofing slate has withstood the test of time. This 500 million year old stone is impervious to severe climatic conditions. Slate is a hard, dense stone whose structural integrity has withstood the rigors of ASTM testing and is fast becoming a popular choice in the architectural world. The intrinsic value of slate as a supreme roofing material can be attributed to the following qualities:

  • Last a lifetime
  • Noncombustible
  • Resistance to acid
  • Environmentally friendly
  • Low maintenance
  • Fire proof
  • Non staining
  • Impermeable to moisture

The durability and minimal maintenance will appeal to any homeowner, contractor or architect.

Design Considerations:

Whether you choose the diminishing course of traditional random slating, or the more regular appearance of sized or patterned slates, Camara slate will enhance any roof with character and visual appeal of a high-quality natural material.
Textures:

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Standard Texture
Standard texture roofs are composed of slate 3/16″ to 1/4″ thick and are either uniform standard length and width, or one length and random widths laid to line. The texture of the slate is moderately smooth.

Vermont Slate Tile Company

Rough Texture
A rough texture roof utilizes slates which have a varying thickness and whose external surface is rugged in appearance.

Graduated Roofs
The graduated roof has the irregular features of the rough texture roof but has even greater variations in thickness and size. The slates are installed so that the thickest and longest are placed at the eaves and then the pieces gradually and proportionately diminish in size until the ridges are reached. Slate from this type can be obtained in any combination of thickness from 1/4″ to 1″.

Standard Sizes:

Slate Selection Considerations:

Slate is ordinarily considered to be the most permanent type of roof covering and when properly selected and properly installed it may prove to be the most permanent part of the building. Camara Slate is committed to producing the highest quality roofing slate. By quarrying, fabricating and distributing our own products, we control quality at every stage. Some grades are far more durable than others, when choosing or specifying roofing slate you should consider these issues:

  • Color
    • Unfading
    • Semi-weathering
  • Geology of slate
    • Where the slate is quarried (Vermont, New York, Pennsylvania, China, so on)
  • Durability
    • All slates have a 100-year warranty against delaminating and softening of the body
  • Quality
    • The slates shall be reasonably full corners. No broken corners on the exposed end more than 1″. No broken corners on the covered ends allowed that would sacrifice nailing strength, or the laying of a watertight slate roof. (No more than 3″ broken corner measured down or across)
    • Face dimensions shall not differ more than 1/8″.
    • Slate should be free of knots, knurls, flints and pyrites.
    • There should be no more than 2% of broken slate including those that have cracks that materially effect the ring when sounded (this includes shipping)
  • Nail holes
    • 3/16″- 1/4″and 1/4″-3/8 must be punched (to allow nail to fit in countersunk hole)
    • 3/8″- 1/2″ and thicker can be drilled

Service:

Our company takes great pride in its unparalleled service and has the resources to set the standards in the industry. Product availability is the centerpiece of our production team whose focus is to provide the ultimate customer satisfaction. Camara Slate is committed to deliver a standard beyond our competitors abilities, with excellent service and a quality-valued product that is delivered in a timely manner.

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Specifications:

Printable spec sheet coming soon.

Pricing

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Please contact us for pricing information.

Questions and Samples

Vermont Structural Slate Company

99% of all people who are interested in our products have similar questions.

Call us at Camara Slate (802)-265-3200 between 7:30 am to 5:00pm EST or Fill out our online form.