Green Roof Cost Analysis

We discuss the benefits and costs of light self sustaining vegetated roofs.

Green roof cost analysis. Green roofs are roofs which are partially or completely covered by vegetation. The benefits of the ecosystem services es provided by green roofs can be classified into private and public benefits. This analysis found that the typical installation cost for a green roof depends on its size with the price per. 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.

The total energy saving is 32 4 mmbtu which is 9495 5 kwh. However in germany with established green roofs industry and higher implementation rates the additional costs were only around 13 m 2 41 m 2. Roof can expect to spend between 15 000 and 30 000 with most paying around 22 000 for the project. In british columbia canada the costs for a standard extensive green roof varies from 130 to 165 bianchini and hewage 2012.

10 west jackson street chicago il gsa s green roof report estimated that green roofs on commercial and public buildings provide a payback based on 50 year average annual savings of about 6 2 years nationally internal rate of return of 5 2 and an roi of 224 based on a net present value of 2 7 square foot. There are several types of green roofs which leads 1 to a wide range of associated costs. Green roof cost benefit analysis pdf 885 kb. In north america with very low implementation rates of green roofs across the continent the additional costs of extensive green roofs ranged from 45 m 2 to 190 m 2.