Recommendations for Application of Asphalt Shingles on Steep Slopes and Mansard Construction

Defines the maximum slope for normal shingle application and suggests different installation methods for slopes beyond that maximum. Over the last few years, architectural design trends have resulted in radical departures from normally accepted roofing concepts. Roof slopes, especially in mansard design, have been increased to the

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Photovoltaic Systems and Asphalt Shingle Roofs

Introduction Photovoltaic (PV) systems convert sunlight into electricity. These systems have been successfully installed on residential asphalt shingle roofs for many years. The two common attachment methods are rack-mounted and roofintegrated: The latter method is sometimes referred to as building integrated photovoltaics. Framed rigid PV panels/modules are commonly mounted on

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