Natural rock slate is natural stone that is split into thin slates of uniform thickness. For over 1,000 years, rock slate has been used for roofing materials and generally more durable than any other clay or concrete roofing product. Natural rocks slate are available in several colors including shades of green, gray, purple, black and red and can be produced in nearly any thickness and size.
Vermont/ New York Slate
Since the mid 1800’s, natural rock slate has been quarried in portions of Vermont and New York and continues today. Millions of years in the making, natural rock slate offered from the quarries in Vermont and New York is a vastly superior and durable roofing product with life expectancies exceeding 100 years and beyond.
With our commitment to offering nothing but the finest quality of roofing products in the United States, all slate offered is of S-1 quality (meaning 100 year lifespan or greater). The benefits of a natural rock slate roofing system from Vermont or New York assures any new or existing roofing system a firm guarantee of a fire proof and water resistant product that is permanent, resistant to climate change, and virtually impervious to fungi and mold. New slate provided by the quarries in Vermont and New York are a superior natural roofing product in which the Green Construction industry strives to achieve.
Natural rock slates are suitable for any climate within the United States, Canada, Europe, and beyond. The use of natural rock slate roofing systems includes but not limited to residences, schools and universities, commercial and government facilities.
Our extensive color palette assures your natural roofing slate options as virtually endless in terms of range of tones, subtle weathering characteristics, and any desired pattern within your respective roofing project.
Colored Slate Classification (Vermont/ New York)
Most colored slates will experience varying degrees of color change through out their respective life spans. This weathering of the slate is due to the oxidation over time of minerals embedded within the slate. Depending on the mineral content, the weathering process slowing changes the slate color. The color change typically is towards that of buff, brown, gray, and/ or tan tones. Below are the three classifications of slate types:
- Manufactured from slate that has varying mineral content. A portion of these slates will change in color while others will remain the original shade.
- The greatest number of individual slates in which the color will change from its original shade.
- The least number of individual slates in which the original color tone of the slate will remain throughout its lifespan.
The grades of slate, meaning the uniformity in thickness and texture that each slate exhibits includes a select standard grade, rough texture standard grade, architectural grade, heavy grade, and estate grade. These grades are defined as follows:
- Select Standard Grade
- This is a very uniform thickness of 1/4” and has little texture. These slates weigh on average 680 to 780 lbs per square.
- Rough Texture Standard Grade
- A rough textured which exhibits a more enhanced grain in the surface in which the thicknesses will vary between 1/4” to 3/8”. Rough textured standard grade slates weigh between 800 to 1,000 lbs per square.
- Architectural Grade
- Similar to the texture as the rough textured standard grade slate, these slates are thicker, ranging from 3/8” and 1/2" and weigh between 1,200 and 1,500 lbs per square.
- Heavy Grade
- As with the rough textured slates previous detailed, the Heavy Grades slates exhibit a rough texture and thicknesses of 1/2" to 3/4" and will weigh between 1,800 and 2,200 lbs per square.
- Estate Grade
- This rough textured slate measures at least 3/4" thick. These slates weigh 2,500 and 3,000 lbs per square.
We offer slates in sizes which include a uniform length and width, uniform length and random widths, and random lengths and random widths along with varying grades for each specific request.