Colonial Black Roof Slates
Colonial Black is quarried with a uniform black tone with little variation from piece to piece.
Yet due to its higher percentage of Calcium, about 10% to 20% percent of these slate shingles will weather to lighter shades of grays and buffs.
The weathering slate roofing is commonly used as a substitute for Vermont Black or Vermont Clear Black.
This weathering slate is commonly used in Historic districts allowing the new roof to have an aged appearance.