Products / Vermont Structural Slate Roofing Slate

Natural Vermont roofing slate quarried and fabricated on the grain by Vermont Structural Slate, in unfading, semi-weathering and weathering colors and blends. The page prints standard lengths of 12 to 20 inches, widths of 6 to 14 inches and a standard thickness of 3/16 to 1/4 inch, with 3/8, 1/2, 3/4 and 1 inch and custom sizes, shapes and graduated roofs available, a natural cleft finish with trimmed edges, and nail holes generally put in at the quarry. The page states the slates have tested ASTM Grade S-1, and its guide specification calls for Grade S1 per ASTM C-406-06. The same page describes the slate as lasting over 75 years in one section and over 125 years on a roof in another.