Green Roof Analysis

A green roof also known as a living or vegetated roof incorporates multiple layers such as waterproofing membrane and protective layer on the traditional roof.

Green roof analysis.

The benefits of the ecosystem services es provided by green roofs can be classified into private and public benefits. The analysis was completed in two phases. There are many environmental and operational benefits of vegetated roofs. This article presents a green roof cost benefit analysis cba.

Basic layers from bottom to top of green roof systems usually consists of a root barrier drainage filter growing medium and vegetation layer. Green roofs also known as vegetated roofs or living roofs are ballasted roofs consisting of a waterproofing membrane growing medium soil and vegetation plants overlying a traditional roof. While the two models agree on electricity savings they differ in estimates for heating. Green roofs are roofs which are partially or completely covered by vegetation.

The estimation of the green roof impact on the total energy saving consumption of buildings. Green roofs are approximately 6 to 8 per square foot cheaper to install than semi intensive green roofs and in both cases larger green roofs cost less per square foot to install than smaller green roofs. For the r value analysis there was a 66 1 mwh savings for the green roof with 59 5 mwh attributable to heating and 6 6 mwh for cooling. 8 they found that while green roofs are more expensive than cool or conventional roofs they provide significantly higher relative benefits per square foot over a 50 year lifecycle e g energy cost savings avoided emissions reduced stormwater fees.

This translates to a savings of 1670 of the green roof over the conventional roof. We discuss the benefits and costs of light self sustaining vegetated roofs. Initially experimental measurements were conducted in summer of 2000 in a hotel situated in loutraki region near the extended athens basin. Well designed engineered and maintained green roofs provide multiple environmental social economic and aesthetic benefits.

Researchers at lawrence berkeley national laboratory conducted a lifecycle cost analysis of green roofs cool roofs and conventional roofs.