Green Roof Benefits And Cost Implications

Over its estimated lifespan of 40 years a green roof would save about 200 000 of which nearly two thirds would come from reduced energy costs.

Green roof benefits and cost implications.

Green roofs can help reduce stormwater run off mitigate the urban heat island effect and clean the air benefits that accrue to the community. The study looked at a range of benefits of green roofs including stormwater management improved health benefits due to reduced pollution and energy savings. Green roof capital costs vary widely. The popularity of green roofs has increased in the united states due to their many benefits while pretty green roofs serve a much greater purpose than simple beautification.

Green roof vegetation can shade buildings and increase evapotranspiration which shifts a roof s energy balance or budget. Unlike traditional black tar roofs green roofs reduce energy costs by absorbing heat instead of attracting it and. All other factors being equal location ease of access etc per square foot cost would typically decrease by a factor of at least 3 as size increases from a 1 000 square foot roof to a 20 000 square foot roof. Green roof owners gave weight to wider societal and ecosystem services benefits whilst those without focussed much more upon building level benefits and costs because of the restricted sample size the findings in themselves are not generalizable.

A study completed by three researchers at the university of michigan found that greening 10 percent of chicago roofs would result in public health benefits of between 29 2 and 111 million due to. A study on sonadanga residential area phase i khulna bangladesh md. A large body of evidence shows that green roofs help to reduce local ambient air and surface temperatures in cities. Rather themes are drawn from the research for reflection findings point to steps that might be.

A in depth analysis of the benefits challenges and opportunities of alternative roofs such as conventional roofs or white roofs was beyond the scope of this report. A green roof also known as a rooftop garden or a living roof is a vegetative layer grown on a rooftop. The net effect reduces the temperature of the r oof and air directly. This paper evaluates the environmental benefits of green roofs by comparing emissions of no2 so2 o3 and pm10 in green roof material manufacturing process such as polymers with the green roof.

Benefits cost implications awareness and policy framework.