Extensive Gren Roof Cost Benefit Analysis

This article presents a green roof cost benefit analysis cba.

Extensive gren roof cost benefit analysis.

The mean difference between the cost of the green roof and the conventional roof is defined as the cost gap. Carter and keeler 2008 conducted a life cycle cost benefit analysis of extensive green roofs in athens ga and they used 158 82 for green roofs. The benefits of the ecosystem services es provided by green roofs can be classified into private and public benefits. However a lifecycle net benefit cost analysis with the social dimension is still missing.

The following will present an example of an extensive green roof with. The cost benefit analysis presented in this section is based on a direct comparison between installing either a black roof or a state of the art extensive green roof as a replacement for an existing conventional roof. 1 extensive green roof 2 intensive green roof and 3 c d waste based extensive green roof. Without this benefit green roofs would cost over 85 more than their traditional counterpart.

In british columbia canada the costs for a standard extensive green roof varies from 130 to 165 bianchini and hewage 2012. Conventional roof system to an extensive green roof system. The internal rate of return was then determined for. Probabilistic economic analysis of environmental benefits.

Cost and benefits of green roofs are divided in two categories in this paper. The analysis was conducted for three main green roof types. Factors that affect maintenance costs include for example project size level of maintenance needed and proximity of the maintenance crew to the project site. The costs and benefits of the extensive green roof are averaged between a 3 inch multi course extensive.

Maintenance costs for extensive green roofs in minnesota typically range from 0 10 to 1 00 per square foot per year after the first five years. Green roof lifecycle cost benefit analysis. Green roofs are roofs which are partially or completely covered by vegetation. We discuss the benefits and costs of light self sustaining vegetated roofs.

1 personal and 2 social. The main construction benefit and best overall benefit in economic terms of the extensive green roof is that it extends the life of the waterproofing membrane and eliminates the need for frequent reroofing. The purpose of this cost benefit analysis of extensive green roofs is to eliminate these economic reservations and provide conclusive evidence that extensive green roofs are able to provide a short and long term return on investment.