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SLATE & TILE
Plain or flat rectangular tiles were most most commonly used from the 17th through the beginning of the 19th century measured about 10" by 6". The tiles had two holes at one end for a nail or peg fastener. Sometimes, mortar was applied between the courses to secure the tiles in a heavy wind. Tiles were used as a roofin medium in the United States until the mid-19th century.
A practice settlers brought to the New World was slate roofing. Evidence of roofing slates have been found also among the ruins of mid-17th century Jamestown. But because of the cost and the time required to obtain the material, which was mostly imported from Wales, the use of slate was initially limited. Even in Philadelphia (the second largest city in the English-speaking world at the time of the Revolution) slates were so rare that “The Slate Roof House” distinctly referred to William Penn’s home built late in the 1600s. Sources of native slate were known to exist along the eastern seaboard from Maine to Virginia, but difficulties in inland transportation limited its availability to the cities, and contributed to its expense. Welsh slate continued to be imported until the development of canals and railroads in the mid-19th century made American slate more accessible and economical.
Slate was popular for its durability, fireproof qualities, and aesthetic potential. Because slate was available in different colors (red, green, purple, and blue-gray), it was an effective material for decorative patterns on many 19th century roofs (Gothic and Mansard styles). Slate continued to be used well into the 20th century, notably on many Tudor revival style buildings of the 1920s.
“If not for their hard work, conscientious effort, teamwork and proactive approach to our project it certainly wouldn’t have been as successful as I feel it is today.”
James Sanderson, J.K. Scanlan Company