New Roofing Concepts And Techniques

摘要

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 "fifth wall." Others are helping ensure that the building envelope is sealed against moisture and air penetration to improve energy efficiency and occupant health, safety, and welfare. In light of events like Hurricanes Katrina and Rita and the resulting climb in insurance premiums, roof and roof-wall assemblies need to withstand severe weather better. Other key attributes include offering more insulation, help in mitigating the urban heat-island effect. Newer challenges include structurally supporting vegetated roofs or roof-mounted energy systems, while never forgetting the basic design considerations.