Natural Slate (Multi-Color)
Pictured above is a new Vermont Slate Roof installed by Renaissance Roofing, Inc. This roof included several colors including unfading gray/ green, unfading mottled green & purple and unfading purple. This roof is unique in the sense that it graduated in lengths and thicknesses from the eave line to the ridge.
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 fireproof 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.
Read more about the history of natural slate from Wikipedia.
Colored Slate Classification (Vermont/ New York)
Most colored slates will experience varying degrees of color change throughout 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:
Semi-weathering
Manufactured from slate that has varying mineral content. A portion of these slates will change in color while others will remain the original shade.
Weathering
The greatest number of individual slates in which the color will change from its original shade.
Unfading
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 780lbs 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 1,000lbs per square.
Architectural Grade
Like 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 1,500lbs 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 2,200lbs per square.
Estate Grade
This rough textured slate measures at least 3/4" thick. These slates weigh 2,500 and 3,000lbs per square.
Reference: Greenstone Slate
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.
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 fireproof 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.
Read more about the history of natural slate from Wikipedia.
Colored Slate Classification (Vermont/ New York)
Most colored slates will experience varying degrees of color change throughout 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:
Semi-weathering
Manufactured from slate that has varying mineral content. A portion of these slates will change in color while others will remain the original shade.
Weathering
The greatest number of individual slates in which the color will change from its original shade.
Unfading
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 780lbs 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 1,000lbs per square.
Architectural Grade
Like 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 1,500lbs 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 2,200lbs per square.
Estate Grade
This rough textured slate measures at least 3/4" thick. These slates weigh 2,500 and 3,000lbs per square.
Reference: Greenstone Slate
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.
| Size | Pieces/square | Exposure |
| 12 x 6 12 x 7 12 x 8 12 x 9 12 x 10 12 x 11 12 x 12 |
534 457 400 356 320 291 267 |
4-1/2” 4-1/2” 4-1/2” 4-1/2” 4-1/2” 4-1/2” 4-1/2” |
| 14 x 7 14 x 8 14 x 9 14 x 10 14 x 11 14 x 12 14 x 14 |
374 328 290 262 238 218 187 |
5-1/2” 5-1/2” 5-1/2” 5-1/2” 5-1/2” 5-1/2” 5-1/2” |
| 16 x 8 16 x 9 16 x 10 16 x 11 16 x 12 16 x 14 |
277 247 222 202 185 158 |
6-1/2” 6-1/2” 6-1/2” 6-1/2” 6-1/2” 6-1/2” |
| 18 x 9 18 x 10 18 x 11 18 x 12 18 x 14 |
214 192 175 160 137 |
7-1/2” 7-1/2” 7-1/2” 7-1/2” 7-1/2” |
| 20 x 10 20 x 11 20 x 12 20 x 14 |
170 154 142 121 |
8-1/2” 8-1/2” 8-1/2” 8-1/2” |
| 22 x 11 22 x 12 22 x 14 |
138 127 121 |
9-1/2” 9-1/2” 9-1/2” |
| 24 x 12 24 x 14 |
115 98 |
10-1/2” 10-1/2” |