|PDH Online Course Description||PDH Units/
Learning Units (Hours)
Jeffrey Havelin, PE
The purpose of this (One-Hour) course is to provide the architect or engineer with a fundamental understanding and a technical knowledge of historic slate roofs. Installed properly, slate roofs require relatively little maintenance and will last 60 to 125 years or longer depending on the type of slate employed, roof configuration, and the geographical location of the property.
The relatively large percentage of historic buildings roofed with slate during the late nineteenth and early twentieth centuries means that many slate roofs may be nearing the end of their serviceable lives at the end of the twentieth century.
These roofs are being improperly repaired or replaced with alternative roofing materials, to the detriment of the historic integrity and appearance of the structure. Increased knowledge of the characteristics of slate and its detailing and installation on the roof can lead to more sensitive interventions in which original material is preserved and the building's historic character maintained.
This course is based entirely on the web version of the National Park Service Preservation Brief 29 which is entitled “The Repair, Replacement & Maintenance of Historic Slate Roofs” as published by the National Park Service- U.S. Department of the Interior.
This course includes a multiple-choice quiz at the end, which is designed to enhance the understanding of course materials.
NY PE & PLS: You must choose courses that are technical in nature or related to matters of laws and ethics contributing to the health and welfare of the public. NY Board does not accept courses related to office management, risk management, leadership, marketing, accounting, financial planning, real estate, and basic CAD. Specific course topics that are on the borderline and are not acceptable by the NY Board have been noted under the course description on our website.