Whether it’s planting a green roof, installing building-integrated photovoltaic (BIPV) systems, or applying coatings or materials to
reduce material heat emittance and surface temperature, Building Teams are paying more attention to the roof plane. Many are focused on
the gains in the sustainability of their projects, and others see an opportunity to make a design or social statement on the building’s “fi fth wall.”
Others are helping ensure that the building envelope is sealed against moisture and air penetration to improve energy effi ciency and occupant
health, safety, and welfare.
After reading this article, you should be able to:
Describe new developments affecting the sustainability of roofing assemblies and products.
Understand the basic approaches and benefits of vegetated roofs.
List and describe factors affecting themselection and performance of “cool roof” materials and rooftop photovoltaics.
Discuss approaches to improving the performance of roofs as air-and-moisture barriers.