virginia buckingham slate roofing example

Virginia Buckingham

Welsh settlers in Virginia discovered a vast supply of slate and, realizing its usefulness, roofed their homes with the wonder rock. Unbeknownst to them, their discovery would prove to be one of the strongest and most popular slates in the world, Buckingham Slate.

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History

In the 18th century, Welsh settlers investigating the natural riches of Virginia uncovered a vast store of unusual slate; deep-blue-black color, it glittered in the sun. Impressed, they used this wonder-rock to build new homes. This slate would prove to be the most lasting, unfading, and popular slate product available anywhere and can be seen on some of America's finest buildings including Ford's Theatre, The Smithsonian Castle (right image), and Harvard University.

Info

  • 100% natural product
  • Exceptionally durable, 100-year useful life
  • Proven historic performance & aesthetically pleasing
  • Non-combustible—Class A Fire Resistant
  • Resistant to acid rain, ultra-violet light & chemicals
  • Withstands freeze/thaw cycles & high temperatures
  • Rated Class 3 and Class 4 Hail Impact Resistance (3/4 to 2 inch ice balls)
Before
after

Data & ASTM

This Slate*
ASTM Standards*
Breaking Load
771 pounds
575 pounds minimum
Water Absorption
0.183"
0.25% maximum
Depth of Softening
0.0002"
0.002" maximum
ASTM Rating
S1
Lengths
Widths
Exposure**
24
12, 14
10.5
22
11,12, 14
9.5
20
10, 11, 12
8.5
18
9, 10, 11, 12
7.5
16
8, 9, 10, 11, 12
6.5
14
7, 8, 9, 10, 11, 12
5.5
12
6, 7, 8, 9, 10, 12
4.5
Thickness (Inches)
Pounds per Square
1/4 - 3/8
950 - 1050
3/8 - 1/2
1300 - 1400
1/2 - 5/8
1800 - 2100
5/8 - 3/4
2500 - 3000
** As tested by ASTM. Test report available upon request.
**3" Headlap, inches
More than a roof. It's a Legacy.